Difference between revisions of "Proper disposal of chemicals"

Latest revision as of 20:09, 13 March 2024

Most chemicals used by the amateur chemist come from every day use and do not require special treatment before being discarded in the usual way. However there are many chemicals, such as heavy metal compounds or organic solvents, that require special disposal techniques. In the interest of keeping lab costs low, though, it may be a good idea to look into ways to recycle and recover chemicals such as solvents, which can be reclaimed by distillation.

IMPORTANT NOTE!!!

The information posted in this article is merely a collection of observations from various amateur chemists and is NOT meant for professionally disposing large amounts of chemicals and should NOT be used as a guideline on neutralizing reagents. For the disposal of large amounts of hazardous reagents or for special reagents, ask the help of professional hazardous chemical disposal entities. ALWAYS CHECK THE LOCAL LAWS BEFORE DISPOSING OF ANY REAGENT! This wiki will NOT take any responsibility (legal or other) for any (failed) attempts at neutralizing hazardous reagents. Do not treat the written disposal guidelines as absolute.

Standard procedures

Acids

Acids are best neutralized with a base, such as carbonate/bicarbonate, hydroxide (calcium hydroxide e.g.) best as aqueous solution. Before neutralizing them, always dilute the acid first, to limit splashing or boiling the acid. ALWAYS POUR THE ACID IN WATER AND NOT THE OTHER WAY AROUND! After you diluted the acid, dissolve the base in water or, if it's insoluble, add just enough water to turn it into a suspension. Slowly add the base in the diluted acid, and watch out for foaming or, if it's a strong acid, boiling. Never add solid alkali bases in strong acids, as this will cause the acids to violently boil and splash acid everywhere. After neutralization, you're left with a solution containing the salt of the neutralized acid. Salts of hydrochloric, sulfuric, phosphoric acids can be further diluted then safely poured down the drain, or recycled if you want.

The soluble salts of halogen acids and oxoacids (except perchloric and chloric acids) can be safely poured down the drain. Special acids and their salts, such as hydrazoic acid and azides must not be poured directly down the drain, they must be treated with nitrous acid to destroy them.

Oxidizing mixtures, such as aqua regia, piranha solution or the nitrating mixture must also never be poured down the drain, as they're much more dangerous than simple acids, and can wreak havoc on your plumbing. Instead, they must be neutralized first.

Bases

Alkali hydroxides can be left in open air to absorb carbon dioxide as well as corrosive and unpleasant gases, forming carbonates and salts. However, as the carbonate is formed, it will creep out of the flask, covering it. For quicker results, alkali bases can be neutralized with any acid, though for practical and economical purposes, acetic acid or citric acid are sufficient. Just make sure to dilute the bases first. Bases may be reused to absorb acidic vapors in a desiccator, which mitigates their dangers. Care must be taken to avoid excess heating with strong bases.

Cyanides

Waste containing cyanide, either from gold refining or from organic extractions of alkaloids from cyanide containing plants, must be neutralized with bleach or hydrogen peroxide, to turn them into less harmful cyanates. The resulting cyanates will slowly hydrolyze in basic environment to ammonium carbonates, while excess bleach/oxidizer will further convert them to nitrogen and carbon dioxide.

Cyanides must never be poured down the drain before neutralization.

Heavy metals

Since the biggest hazard comes from the volatile and soluble heavy metal compounds, it's best to convert them into insoluble compounds, which are less toxic.

Heavy metals, such as mercury, can often be neutralized with a mixture of zinc and sulfur powders, which yields mercury sulfide aka cinnabar. This compound is insoluble in water and acids, showing little reactivity.

Very dangerous heavy metals such as cadmium, thallium and arsenic should always be properly disposed of at designated facilities, as their effects on human life and the environment is sometimes catastrophic.

Inorganic anions

Inorganic anions, based on halogens, sulfur, phosphorus, nitrogen, carbon and silicon can be flushed down the drain with lots of water. Examples of these are sulfide, sulfate, chloride, chlorate, nitrate, nitrite, thiocyanate.^[1]

Metal ions

A good rule of thumb for transition metals is to convert solutions of their ions to the insoluble carbonate or oxide, often one of the most stable and nontoxic forms of these elements, prior to disposal. Another simple solution is to reduce the ions back to the metal.

Copper salts are dangerous to the environment and should be reduced with iron to elemental copper, that can be reused, and the iron salts produced are less toxic.

Nickel-containing compounds, especially organonickel compounds, are carcinogens, and are also dangerous to many other forms of life. It is a good idea to take these to a proper waste disposal facility.

Cobalt salts may be carcinogenic and should be taken to a proper waste disposal facility.

Aluminium compounds generally should not be disposed in the sewage. They can, however, be converted to aluminium sulfate, which is safe to dispose of in soil, though it will cause a decrease in pH (it is used as a fertilizer for this purpose), and in diluted form can be poured down the drain, as at low concentrations it's used in the treatment of water. It is a good idea to dispose of aluminium sulfate and a safe basic compound (such as calcium carbonate) at the same time.

Many compounds of chromium, especially chromium(VI), are poisonous and carcinogenic. These should be converted to the +3 oxidation state; hydrogen peroxide as well as sulfites or thiosulfate will do this, which is typically the least harmful, preferably to chromium(III) oxide. Chromium dioxide may be another feasible option, as it is found in cassette tapes and can be recycled with them.

Zinc compounds can be refined to zinc metal using electrowinning. It's not recommended to use zinc compounds obtained from technical sources as zinc supplements for soil or livestock, as it may contain traces of heavy metals, such as cadmium.

Some MSDS sheets recommend that rare earths be converted to their oxalates or carbonates and disposed of in the trash.

Alkali metals are minimally toxic as their salts and may be dumped down the drain.

Organic compounds

Organic solvents should be poured in labeled waste tanks, such as: halogenated, non-halogenated solvents. Flammable organic solvents that are safe in low exposures, such as ethanol, methanol, and acetone can often simply be burned outside for disposal, as most often their combustion products are simply carbon dioxide and water. It may be a better idea just to recover them by distillation, though. An alcohol burner can be used to burn these liquids.

Halogenated compounds like chloroform can be neutralized with a strong base, although this neutralization should not be done without safety precautions.

A good, though resource-intensive way to destroy halogenated and aromatic compounds is with Fenton's reagent, which breaks them down to simpler non-toxic compounds. It's best however, to avoid dumping large quantities of waste, as the reaction in exothermic and may splash or volatilize some of the waste, so it's best to perform the neutralization in small steps. Many methods described in literature involve slowly bubbling the organic compound with a carrier gas in the Fenton solution, as this increases oxidation and limits splashing. However, because only small amounts of compound gets neutralized at a time, this process takes a while. For safety, you will need to use diluted hydrogen peroxide, meaning that at the end of the neutralization process you will be left with a large volume of water filled with iron precipitate and some organic residues that did not decompose completely, though they're generally not as toxic as their parent compound.

Chromic acid and it's derivatives can also be used to destroy hazardous chemical compounds, as it neutralizes them to carbon dioxide and water. However, chromic acid will (violently) oxidize alcohols to their respective aldehydes or ketones, which cannot be oxidized further by the acid alone, which limits it's use in neutralizing many compounds.

Piranha solution is an excellent material for the disposal of organic compounds. The decomposition is highly exothermic and the resulting smoke is very dangerous. As such, this method is generally considered a last resort in disposal, and it's mostly used for cleaning rather than disposal.

Organic salts, such as acetates and oxalates can be pyrolyzed to carbonates and water vapors. The decomposition works best in oxygen-rich atmosphere.

Recycling

Sometimes it is an option to purify waste products into chemicals that are pure enough to be used again. While this can sometimes be time consuming, it can often be more environmentally and economically friendly than discarding the waste in one manner or another is. Before discarding waste, think about what all it contains, and if there is some way that it could be used.

Down the drain vs. into the soil

The availability of these disposal methods varies depending on where you live. If you live in an apartment block, you only have the drain. If you live in a suburban house, you have both. If you live in some quaint rustic ~~shithole~~ paradise like the author of this edit, you only have the "into the soil" option.

Generally, the soil option is safer, because there is no plumbing you should worry about, but some chemicals shouldn't be released into the soil, either. In general, your designated place for pouring chemicals into the soil should be far from any gardens, horticulture or any other agricultural objects. Chemicals marked as "Oh yes!" in the table below are harmless and even useful in agriculture as fertilizers. These you can pour down in your garden.

Lists of various chemical compounds that can be safely released in the ground or down the drain can be found here, here or here.

Other

Heavy metal salts or solutions can be mixed with cement, and trapped by making a concrete block. The resulting block can also be covered in another layer of cement, to reduce the diffusion of the heavy metals. Unless the concrete is damaged, broken or dissolved in acid, the heavy metal ions will not be released. However, this merely is a method to prevent the heavy metals from being released in the environment and is not a permanent way of disposal.

Legal considerations

Releasing hazardous chemicals in the environment is a crime in all jurisdictions and carries heavy fines or even jail time. While properly neutralized reagents may be poured down the drain, dumping very large amounts of said reagents is frowned upon. Incineration is attractive as it's a good method of getting rid of wastes, but unless you're using an incinerator, some material will not be destroyed and instead it will be scattered in air. Likewise, it's forbidden to burn certain materials in open air, such as aromatic compounds or organosulfur compounds and for those, special incinerators are a must.

Always check the local laws before choosing the disposal method.

Chemical disposal table

A-L

Substance	Neutralization	Heat treatment	Down the drain	Into the soil	Environmental considerations
1,2-Dichloroethane	Oxidation with Fenton's reagent; Concentrated solution of sodium hydroxide	Flammable, releases corrosive fumes	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
1,2,4-Butanetriol trinitrate	Safe detonation in remote area; Strong dilution in organic solvent followed by safe incineration; Hydrolysis with cold sodium hydroxide solution	Detonation above 230 °C	DO NOT DUMP	DO NOT DUMP	Toxic to organisms; nitrate source for plants
1,3,5-Trichlorohexahydrotriazine	Reducing agent capable of safely neutralizing chlorine	Breaks down above 78 °C	DO NOT DUMP	DO NOT DUMP	Possibly harmful for organisms
1,4-Dichlorobenzene	Oxidation with an oxidizing solution, such as chromic acid, piranha solution, Fenton's reagent	Flammable, releases corrosive fumes	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, suspected carcinogen
1,4-Dioxane	Incineration (no peroxides); Oxidation with Fenton's reagent; Chlorination in water with chlorine or hypochlorous acid; If peroxides are present, addition of excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Incineration produces carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Although small amounts can be diluted with large amounts of water and poured down the drain, 1,4-dioxane does not undergo significant biodegradation and most will end up in the environment.^[2]
2-Chloroethanol	Oxidation with Fenton's reagent	Generates carbon dioxide, HCl, water, phosgene	DO NOT DUMP	DO NOT DUMP	Toxic to all wildlife
2-Mercaptoethanol	Hydrogen peroxide, bleach; poured down the drain	Decomposes to release hydrogen sulfide, sulfur dioxide and carbon dioxide	Neutralize it with bleach or hydrogen peroxide first	Not recommended	Harmful to organisms due to its ability to weaken S-S bonds in various tissues
2-Nitrotoluene	Oxidation with Fenton's reagent	Generates oxidation products and lots of soot	DO NOT DUMP	DO NOT DUMP	Toxic to all wildlife
2,2,4-Trimethylpentane	Incineration	Generates carbon oxides, water vapor and soot	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife and dangerous for water bodies as it floats
2,4-Dinitrobromobenzene	Oxidation with Fenton's reagent	Generates carbon oxides, water vapor, soot and bromine vapors	DO NOT DUMP	DO NOT DUMP	Toxic to all wildlife
4-Aminoantipyrine	Strong dilution; Oxidation with Fenton's reagent	Generates carbon oxides, water vapor, soot and nitrogen vapors	DO NOT DUMP	DO NOT DUMP	Considered to be toxic to wildlife, but not much is known about its effects
4-Toluenesulfonyl chloride	Neutralization with diluted aq. NaOH; Strong dilution; Oxidation with Fenton's reagent	Generates carbon oxides, water vapor, soot, sulfur oxides and HCl fumes	DO NOT DUMP	DO NOT DUMP	Considered to be toxic to wildlife, but not much is known about its effects
Acetaldehyde	Incineration; Sodium pyrosulfite; L-cysteine	Generates carbon oxides and water vapors; some will evaporate when heated	DO NOT DUMP	DO NOT DUMP	Toxic to the wildlife
Acetamide	Dilution in a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent	Gives off carbon monoxide, dioxide, ammonia, acetonitrile, hydrogen cyanide	DO NOT DUMP	DO NOT DUMP	Possibly harmful
Acetamidine hydrochloride	Addition to water followed by heating, yielding acetic acid and ammonium chloride	Anhydrous conditions yields ammonium chloride and acetonitrile; In presence of water acetic acid and ammonium chloride are formed	Dilute first	Dilute first	Effects unknown, possibly toxic
Acetic acid	Bicarbonates, carbonates, bases, oxides	Flammable (high concentrations), no dangerous combustion products	Yes	Yes	Safe, biodegradable; avoid dumping large amounts, acidifies soil
Acetic anhydride	Bicarbonates, carbonates, bases, oxides	Flammable, no dangerous combustion products	Yes	Yes	Biodegradable; avoid dumping large amounts, acidifies soil
Acetone	Oxidation/incineration, reducing, photolysis	Flammable, no dangerous combustion products	Not advised	Yes	Biodegradable, though not advised for large amounts
Acetone peroxide	Photolysis, detonation in safe area	Explosive, not recommended	Not advised	Not advised	Biodegradable, though not advised
Acetonitrile	Fenton's reagent; Aqueous solution of excess sodium hydroxide^[3]	All treatments give some hydrogen cyanide fumes	DO NOT DUMP	DO NOT DUMP	Toxic to all life due to its cyanide/nitrile group; does not quickly break down in environment
Acetophenone	Mixed with a more flammable solvent and incinerated	Generates smoke, carbon dioxide and water vapors	Yes, but dilute it first	Yes, but dilute it first	Relative safe, biodegradable; Occurs naturally in small amounts
Acetyl chloride	Slow addition to a basic solution	Burn products include hydrogen chloride which is corrosive	DO NOT DUMP	DO NOT DUMP	Extremely toxic and corrosive to organisms and environment
Acetylacetone	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Acetylene	Oxidation, photolysis	Dangerously flammable	Not possible	Not possible	Safe, biodegradable
Acetylsalicylic acid	Any base	Not particularly helpful	Yes	Yes	Safe, biodegradable
Acrolein	Addition of a base, which causes polymerization	Burns in the presence of oxygen releasing carbon oxides, water, and various other organic products	DO NOT DUMP	DO NOT DUMP	Extremely toxic to all organisms
Activated carbon	Burning, dumping in ground; Desorption by heating it to high temperature and reuse	Results in carbon dioxide and ash	DO NOT DUMP	OH YES!	Unless it adsorbed dangerous volatile compounds or heavy metals, it can be used as a fertilizer (powdered form); Less effective as beads or pellets
Agar	Not required	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for many organisms
Allyl alcohol	Diluted with a flammable solvent, like ethanol or acetone and burned; Epoxidation and hydrolysis to glycerol	Burns, releasing an acrid smoke	DO NOT DUMP	DO NOT DUMP	Very toxic to all organisms
Alnico	Recycled Dumped in trash	Loses magnetism when heated and melts at high temperatures	Not recommended	Not recommended	Nickel and cobalt are harmful for the environment
Alpha-pinene	Not required	Generates smoke, carbon dioxide and water vapor	Yes	Yes	Safe, biodegradable; Occurs naturally
Aluminium chloride	Treatment with water, precipitation with a base	No effect; Water solutions however will give off hydrogen chloride vapors	Not advised	Yes	Lowers the soil pH, corrosive
Aluminium iodide	Treatment with water, precipitation with a base; recycling of iodine	No effect; Water solutions however will give off hydrogen iodide and iodine vapors	Not advised	Yes	Lowers the soil pH, corrosive
Aluminium isopropoxide	Incineration outside; Treatment with water, recovery of isopropanol and aluminium oxide/hydroxide or incineration of isopropanol	Melts and decomposes to give various ketones and isopropanol which may ignite; leaves behind alumina residue	Do not dump	DO NOT DUMP	Increases level of aluminium from soil, corrosive and harmful to organisms
Aluminium nitrate	Pyrolysis; Aqueous ammonia or alkaline hydroxide solution	Gives off nitrogen oxide fumes	DO NOT DUMP	Not recommended	Lowers soil pH, corrosive
Aluminium oxide	Not always required, can be dumped in trash	Not useful	Do not dump, may clog plumbing	Yes, but avoid dumping large amounts	Increases level of aluminium in soil, toxic to animals in large quantities
Aluminium phosphide	Diluted sodium hypochlorite, bleach	Burns in air, releasing fumes of phosphorus pentoxide and aluminium oxide, as well as traces of phosphine if any moisture is present	DO NOT DUMP!	DO NOT DUMP	Releases phosphine gas on contact with water, which is deadly to organisms
Aluminium sulfate	Any alkaline hydroxide	Releases sulfur oxides at high temperature	Dilute it first; neutralization with a base first is recommended	No	Increases the aluminium concentration in soil and water, lowers pH
Aluminium sulfide	Hydrogen peroxide, bleach	No	NO	NO	Releases hydrogen sulfide on contact with water, which is toxic to organisms
Amatol	VERY controlled incineration	Burns, may detonate in the presence of metallic impurities, like copper, brass	DO NOT DUMP!	DO NOT DUMP!	While ammonium nitrate is a good nitrogen source for plants, TNT is very harmful for wildlife
Aminoguanidine	Not required, can be discarded in any way	Pyrolysis gives nitrogen and carbon oxides	Yes	Yes	Safe, biodegradable
Aminoguanidinium bicarbonate	Not required, can be dumped in ground; Pyrolysis done outside	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides	Yes, but not recommended	Yes	Little is known about its environmental impact
Aminoguanidinium nitrate	Not required, can be dumped in ground; Careful and controlled pyrolysis	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures	Not recommended	Yes	Safe, nitrogen source for plants; Guanidine derivates occur in guano
Ammonal	VERY controlled incineration	Burns, may detonate in the presence of metallic impurities, like copper	DO NOT DUMP!	DO NOT DUMP!	While ammonium nitrate is a good nitrogen source for plants, the aluminium, TNT and other impurities present are harmful for wildlife
Ammonia	Oxidation, neutralization with acids	At high concentrations may generate nitrogen oxides	Not possible (gaseous), safe to pour (as solution)	Not possible (gaseous), safe to pour (as solution); Good nitrogen source for plants	Biodegradable
Ammonium acetate	Unnecessary	Releases acetonitrile fumes	Yes	Yes	Safe, biodegradable
Ammonium azide	Acidified sodium nitrite, nitrous acid	Slowly volatilizes and explodes at 400 °C releasing nitrogen, hydrogen and ammonia gasses	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Ammonium bicarbonate	Pyrolysis, hydroxides, acids	Decomposes on heating releasing carbon dioxide, ammonia fumes and water vapors	Yes	Oh yes!	Safe, good fertilizer (nitrogen source)
Ammonium bisulfate	Neutralize it with ammonia; can then poured down the drain	Decomposes to release sulfur oxides and ammonia	Yes, though recommended to neutralize first	No, neutralize first	Acidic, but once neutralized good nitrogen and sulfur source for plants
Ammonium bisulfite	While it can be diluted and poured down the drain, it's recommended to neutralize it first; hydrogen peroxide and ammonia can be used to safely neutralize it	Decomposes to release sulfur dioxide and ammonia	Yes, though recommended to neutralize first	No, neutralize first	Oxidation of aqueous ammonium bisulfite to bisulfate can reduce the amount of dissolved oxygen from water bodies and will lower water pH
Ammonium carbonate	Pyrolysis, hydroxides, acids	Decomposes on heating releasing carbon dioxide, ammonia fumes and water vapors	Yes	Oh yes!	Safe, good fertilizer (nitrogen source)
Ammonium chlorate	Controlled incineration in small batches	Decomposes on heating releasing nitrogen, water, oxygen and hydrogen chloride, sometimes explosively	DO NOT DUMP	DO NOT DUMP	Chlorates are harmful to plants
Ammonium chloride	Soluble sulfate salts, base + other acid	Decomposes on heating releasing ammonia and hydrogen chloride	Yes	Yes	Safe, good fertilizer (nitrogen source); May prove unsuitable to chloride sensitive plants
Ammonium chromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid, at acidic pH	Decomposes, the famous volcano reaction, releasing nitrogen gas, water vapors, fine particulates of unburnt ammonium chromate, leaving behind Cr(III) oxide	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Ammonium dichromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH	Decomposes, the famous volcano reaction, releasing nitrogen gas, water vapors, fine particulates of unburnt ammonium dichromate, leaving behind Cr(III) oxide	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Ammonium dihydrogen phosphate	Not required; Slaked lime can be used to precipitate calcium phosphate	Decomposes on heating to release ammonia	Yes	Yes	Safe, good fertilizer (nitrogen and phosphorus source)
Ammonium dinitramide	Careful thermal decomposition	Decomposes on heating to release nitrogen, water and oxygen; may explode if heated too high	Do not dump	Unknown	While it may be a good fertilizer, its environmental effects are unknown
Ammonium ferrocyanide	Not required	Decomposes in several steps, releasing ammonia, water, cyanogen, ferric oxide, in air	Dilute first	Dilute first	Low toxicity, environmental effects unknown
Ammonium formate	Alkali hydroxide, carbonate, sulfate; heating in the presence of a base	Decomposes on heating to release ammonia, carbon monoxide, hydrogen cyanide and water	Yes, if diluted	Yes, if diluted	Dangerous to wildlife in large amounts
Ammonium heptamolybdate	Alkali hydroxide, carbonate, sulfate; Dilution, poured down the drain	Decomposes on heating to release ammonia, water, leaving behind MoO₃	Yes, if strongly diluted	Not recommended	Dangerous to wildlife in large amounts
Ammonium hypophosphite	Diluted cooled hydrogen peroxide solution	Decomposes to ammonia and phosphine	Neutralize first	Neutralize first	Harmful to organisms, especially aquatic ones
Ammonium iron(II) sulfate	Pyrolysis, hydroxides, carbonates	Emits ammonia, sulfur oxides and water vapors, leaving behind iron oxides	Yes	Oh yes!	Safe, good fertilizer (nitrogen, iron and sulfur source); May cause algal bloom in water bodies however
Ammonium nitrate	Pyrolysis, hydroxides, carbonates	Emits nitrous oxide, may explode if the temperature is too high	Yes	Oh yes!	Safe, good fertilizer (nitrogen source); May cause algal bloom in water bodies however
Ammonium nitrite	Alkali hydroxides; strong dilution followed by heating; will slowly decompose even at room temperature, so you may leave it in a safe area and let it decompose	Decomposes or detonates, releasing nitrogen and water vapors	DO NOT DUMP	Yes	Decomposes quickly in environment, especially at low pH
Ammonium oxalate	Alkali hydroxide, carbonate, sulfate; pyrolysis in the presence of a base	Decomposes on heating to release ammonia, carbon monoxide, oximide, hydrogen cyanide and water vapors	Yes, if diluted	Yes, if diluted	May pose a threat to wildlife in large amounts; Occurs naturally in guano
Ammonium perchlorate	Reduction with metallic iron under UV light in the absence of air; Heating perchlorate at 200 °C with metallic iron for several hours	Decomposes to release nitrogen, water vapors, oxygen and hydrogen chloride	DO NOT DUMP	DO NOT DUMP	Hazardous to aquatic life
Ammonium permanganate	Dissolution in water, followed by reduction with sulfur dioxide or sodium sulfite, thiosulfate or metabisulfite	Detonates above 60-110 °C, releasing nitrogen, water vapors and a smoke of manganese dioxide	DO NOT DUMP	DO NOT DUMP	Strong oxidizer and explosive, hazardous for wildlife
Ammonium persulfate	Pyrolysis, hydrolysis, various reducing agents	Decomposes at 120 °C releasing sulfur and nitrogen oxides, oxygen and ammonia	DO NOT DUMP	DO NOT DUMP	Strong oxidizer, hazardous for wildlife
Ammonium sulfamate	Not required; Strong dilution is sufficient	Decomposes on heating to release ammonia, sulfur dioxide, sulfuric acid vapors	Yes	Yes	Considered to be environmentally friendly due to its degradation to non-harmful residues
Ammonium sulfate	Not required; Calcium hydroxide can be used to precipitate calcium sulfate	Decomposes on heating to release ammonia, sulfur dioxide, sulfuric acid vapors	Yes	Yes	Safe, good fertilizer (nitrogen and sulfur source); slightly lowers the soil pH
Ammonium sulfide	Hydrogen peroxide; hot sulfur dioxide	Decomposes releasing hydrogen sulfide and ammonia	DO NOT DUMP	DO NOT DUMP	Extremely toxic for wildlife; Dangerous for the environment (DSD)
Ammonium sulfite	Not required, simply pour down the drain; Bleach or hydrogen peroxide can be used if desired	Decomposes to release sulfur dioxide	Yes	Yes	Oxidation of aqueous ammonium sulfite to sulfate can reduce the amount of dissolved oxygen from water bodies; otherwise, safe, used as fertilizer
Ammonium tetrafluoroborate	Precipitation with sodium hydroxide to less sodium fluorides	Emits very toxic fumes of hydrogen fluoride, nitrogen oxides and ammonia	Do not dump	Do not dump	Harmful for organisms
Ammonium thiosulfate	Dilute then pour down the drain; Bleach or hydrogen peroxide can be used if desired	Decomposes to release sulfur dioxide, ammonia, water vapors	Yes, but dilute first	Yes, but dilute first	May be harmful for aquatic life; safe, used as fertilizer
Amygdalin	Bleach or hydrogen peroxide; poured down the drain	Decomposes to release hydrogen cyanide, carbon dioxide, ammonia, water vapors	Dilute first	Dilute first	May be harmful for aquatic life; safe, occurs naturally in small amounts
ANFO	VERY controlled incineration	Burns, almost never detonates	DO NOT DUMP!	DO NOT DUMP!	While ammonium nitrate is a good nitrogen source for plants, the fuel oil (FO) from its composition is harmful for wildlife
Aniline	Oxidation with Fenton's reagent	Gives off carbon oxides, soot, nitrogen and or nitrogen oxides and water vapor	DO NOT DUMP	DO NOT DUMP	Toxic to most wildlife
Anisole	Dilution with a solvent, followed by incineration; Oxidation with an oxidizing solution, like Fenton's reagent	Gives off carbon oxides, soot and water vapor	DO NOT DUMP	DO NOT DUMP	Potentially hazardous to wildlife
ANNM	VERY controlled incineration	Burns, almost never detonates	DO NOT DUMP!	DO NOT DUMP!	While ammonium nitrate is a good nitrogen source for plants, nitromethane and methanol may be harmful for wildlife
Anthocyanin	Not necessary	Gives off carbon oxides and water vapor	Yes	Yes	Safe, biodegradable; Occurs naturally
Anthracene	Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent	Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Potentially toxic to wildlife, environmental effects unknown
Anthranilic acid	Dumped in trash, poured down the drain	Sublimes and decomposes, releasing carbon oxides, water vapors, soot, anilline	Yes	Yes	Low toxicity, nutrient for organisms
Anthraquinone	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Occurs naturally; effects on the environment unknown
Antimony(III) chloride	Precipitation with a base; Taken to waste disposal centers	Sublimes; Water solutions however will give off hydrogen chloride vapors	DO NOT DUMP	DO NOT DUMP	Lowers the soil pH, corrosive; Toxic to organisms
Antimony(III) oxide	Taken to hazardous waste disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Arabitol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity
Armstrong's mixture	Dissolution in water; Reduction with sodium thiosulfate, sulfite, metabisulfite	Detonates	DO NOT DUMP	DO NOT DUMP	Potassium chlorate is a potent herbicide
Arsenic trichloride	Very careful neutralization with a base to non-volatile arsenic compounds, then taken to hazardous waste disposal centers	Evaporates, reacts with moisture in air	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Asbestos	Pyrolysis; Oxalic acid and ultrasounds^[4]	At temperatures over 1000 °C it turns into harmless silicate glass	DO NOT DUMP	DO NOT DUMP	Toxic to animals via inhalation
Ascaridole	Iron(II) sulfate	Burns releasing carbon dioxide, water vapors, soot; may explode at high concentrations and high temperatures	Neutralize first	Neutralize first	Toxic to animals, parasitic worms, small animals; Occurs naturally
Ascorbic acid	Unnecessary	Releases carbon oxides and water vapor	Yes	Yes	Safe, biodegradable; Occurs naturally
Ash	Unnecessary	Not useful, already byproduct of incineration	Yes	Oh yes	Safe, biodegradable, good source of potassium for plants; Coal ash however, is harmful and contains heavy metals and other impurities; Volcanic ash is abrasive and extremely harmful for the lungs
Asphalt	Dumping in trash	Will decompose at high temperatures, releasing carbon oxides, water vapors and soot	DO NOT DUMP	DO NOT DUMP	Asphalt is harmful for wildlife
Atropine	Hydrolyzed and diluted; Can be destroyed using a strong oxidizing mixture for complete neutralization	At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot	Not recommended	Dilute first	Harmful and toxic to animals; occurs naturally
Barbituric acid	Poured down the drain or in trash; Can be destroyed using a strong oxidizing mixture for complete neutralization	At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot	Yes, but in small amounts	Yes, but in small amounts	Harmful to the environment in short term
Barium acetate	Addition of a soluble sulfate, such as sodium, potassium or magnesium sulfate	Decomposes releasing acetone, carbon dioxide, water, leaving behind barium carbonate	Neutralize with magnesium sulfate first	Neutralize with magnesium sulfate first	Very toxic for wildlife and environment
Barium azide	Acidified sodium nitrite, nitrous acid; precipitation of barium sulfate with sodium sulfate	Melts and explodes above 160 °C releasing nitrogen and barium oxide	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Barium carbonate	Sulfuric acid; Resulting BaSO₄ can be dumped in trash	At very high temperatures decomposed to barium oxide and releases carbon dioxide	Not advised	Not advised	May react with acid rain to release soluble barium ions; Occurs naturally
Barium chlorate	Reduction with a reducing agent, such as sodium bisulfite, sodium metabisulfite, sodium sulfite, followed by oxidation in open air to sulfate; Addition of excess soluble sulfate to remove any soluble barium ions	Disproportionates into perchlorate and chloride when alone; Burns when mixed with a flammable material	No	No	Toxic for environment
Barium chloride	Addition of a soluble sulfate, such as sodium, potassium or magnesium sulfate	Not useful, melts at high temperatures	Neutralize with magnesium sulfate first	Neutralize with magnesium sulfate first	Toxic for environment
Barium chromate	Precipitation of barium, reduction of Cr(VI) to Cr(III)	Not useful, melts at high temperatures	DO NOT DUMP	DO NOT DUMP	Carcinogenic, toxic for environment and wildlife
Barium ferrate	Sulfuric acid	Breaks down to barium and iron oxides, which require further disposal	No	No	Dangerous to wildlife in short term (oxidizer); Releases toxic barium ions in environment
Barium hydroxide	Dil. sulfuric acid, aq. sodium/potassium/magnesium sulfate	Breaks down to barium oxide	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, due to the soluble barium ions
Barium hypophosphite	Diluted cooled hydrogen peroxide solution; addition of sodium sulfate	Decomposes to disodium phosphate and phosphine	Neutralize first	Neutralize first	Harmful to organisms, especially aquatic ones; soluble barium compounds are toxic
Barium manganate	Sulfuric acid	Breaks down into barium and manganese oxides	Not advised	No	Toxic to wildlife in short term (oxidizer); Will release toxic barium ions in the environment
Barium nitrate	Sodium sulfate, potassium magnesium sulfate, sulfuric acid	Breaks down into barium oxide, releasing nitrogen dioxide and oxygen	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, due to the soluble barium ions
Barium nitrite	Precipitation with sodium sulfate; Oxidation to nitrate	Breaks down to barium oxide, oxygen and nitrogen oxides at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; nitrites are toxic
Barium oxide	Sulfuric acid, aq. sodium/potassium/magnesium sulfate	Not useful, converts to barium peroxide, then reverts back to barium oxide	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, due to the soluble barium ions
Barium perchlorate	Reduction with metallic iron under UV light in the absence of air; precipitation to barium sulfate, using a soluble sulfate	Oxidizes flammable materials, burning them; alone decomposes above 505 °C	DO NOT DUMP	Do NOT DUMP	Very toxic to aquatic life
Barium permanganate	Hydrogen peroxide	Decomposes to manganese dioxide at high temperatures	DO NOT DUMP	DO NOT DUMP	The resulting manganese and barium oxides from the decomposition can be toxic if ingested by animals
Barium peroxide	Hydrolysis with dilute sulfuric acid, followed by careful decomposition of the peroxide with iron oxide	Decomposes above 800 °C	DO NOT DUMP	DO NOT DUMP	Peroxides are deadly to small animals; soluble barium salts are toxic
Barium sulfate	Not required	Decomposes at > 1600 °C	Yes	Yes	Low toxicity to wildlife due to its poor solubility in water; occurs naturally as the mineral barite
Basic lead chromate	May be converted to lead(II) carbonate; should be taken to disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Toxic to environment due to lead and Cr(VI) content
Basic lead picrate	Careful and controlled destruction using an oxidizing solution; insoluble lead wastes should be taken to hazardous waste disposal centers	Explodes, releasing lead oxide fumes	DO NOT DUMP	DO NOT DUMP	Extremely toxic to all organisms; lead is a known neurotoxin
Beeswax	Not required, can be dumped in trash or ground	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for some organisms
Benzaldehyde	Incineration; Oxidation to benzoic acid; Oxidation with Fenton's reagent	Generates carbon oxides, water vapors, soot	DO NOT DUMP	DO NOT DUMP	Low toxicity, but avoid releasing in environment
Benzene	Oxidation with Fenton's reagent; Incineration with afterburner incinerators	Generates dangerous combustion products	DO NOT DUMP	DO NOT DUMP	Avoid releasing in environment
Benzocaine	Oxidation with Fenton's reagent; incineration; down the drain	Generates soot and various VOCs and PAHs	Yes	Not in large quantities	Avoid releasing in environment, effects unknown
Benzododecinium bromide	Dilute it with water	Decomposes	Dilute it first	Dilute it first	Unknown environmental effects
Benzoic acid	Not always required	Breaks down to carbon oxides, water vapors, soot; may give off benzene vapors	Yes	Yes, but not in large quantities	Decarboxylation with some compounds, such as ascorbic acid, may release traces of benzene; otherwise safe, occurs naturally
Benzonitrile	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Harmful to the environment
Benzophenone	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Harmful to the environment
Benzoquinone	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent	Decomposes at high temperatures to yield carbon oxides, water vapors, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Harmful to the environment
Benzoyl chloride	Sodium hydroxide in cooled water/crushed ice or alcohol solution	Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen chloride fumes	DO NOT DUMP	DO NOT DUMP	Very toxic and corrosive for wildlife and aquatic life; lachrymator agent
Benzyl alcohol	Mixed with a more flammable solvent and incinerated	Flammable, gives off carbon dioxide, soot and water vapors	DO NOT DUMP	DO NOT DUMP	Harmful for wildlife and aquatic life in large concentrations
Benzyl chloride	Sodium hydroxide in water or alcohol solution	Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen chloride fumes	DO NOT DUMP	DO NOT DUMP	Very toxic and corrosive for wildlife and aquatic life; lachrymator agent
Benzyl cyanide	Sodium hydroxide in water or alcohol solution; neutralization of cyanide with bleach	Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen cyanide fumes	DO NOT DUMP	DO NOT DUMP	Harmful for wildlife
Benzylacetone	Excess bleach, excess NaOH	Breaks down releasing carbon dioxide, water vapors, soot, PAHs	Neutralize first	Neutralize first	Relative safe, poses low toxicity
Benzylamine	Neutralization with an acid; mixed with a flammable solvent, followed by an incineration	Burns in air to release carbon dioxide, water vapor and nitrogen	DO NOT DUMP	Not recommended	Dangerous to aquatic life, albeit recognized as biodegradable
Bis(ethylenediamine)copper(II) perchlorate	Crystallize and ignite safely	Detonates	DO NOT DUMP	No	Copper kills aquatic life and plant roots
Bismuth chloride	Reduced to bismuth metal; neutralized with a base then taken to disposal centers or recovered	Hydrolyzes and releases HCl fumes in open air	DO NOT DUMP	DO NOT DUMP	Hazardous for the environment in large quantities
Bismuth trioxide	Reduced to bismuth metal	Will oxidize anything (yes, platinum too) when molten	DO NOT DUMP	DO NOT DUMP	May become hazardous for the environment in large quantities
Biuret	Not always required	Gives off combustion gasses	Yes	Yes	Safe, biodegradable
Biuret reagent	Neutralization with an acid	Gives off combustion gasses	Debatable	No	Copper and sodium ions pose toxicity to plants and animals
Black powder	Controlled incineration	Will burn to release a thick cloud of carbon dioxide and sulfur dioxide in open air; will detonate in a sealed container	Not recommended	Yes	Its components are already used as fertilizers and the environmental effect are similar
Borax	Not required	Dehydrates	In small quantities	In small quantities	Dangerous to small animals
Borazine	Careful hydrolysis in cold water, outside	Burns, releasing boric acid, boron nitride and nitrogen	DO NOT DUMP	DO NOT DUMP	Boric acid resulted from hydrolysis is harmful to the fauna
Boric acid	Not required	Will dehydrate it to boron trioxide	In small quantities	In small quantities	Dangerous to small animals
Borneol	Not required	Generates smoke, carbon dioxide and water vapor	Yes	Yes	Safe, biodegradable; Occurs naturally
Boron carbide	Not required	Not useful	In small quantities	In small quantities	Dangerous to small animals
Boron nitride	Not required	Not useful	In small quantities	In small quantities	Dangerous to small animals
Boron trichloride	Careful neutralization by adding it in ice cold water, floowed by neutralization with a base	Evaporates, non-flammable, not effective	DO NOT DUMP	DO NOT DUMP	Boron compounds tend to be harmful for wildlife
Boron trioxide	Not required	Not useful; may volatilize at high temperatures	In small quantities	In small quantities	Dangerous to small animals
Brass	Recycling; Traces of brass waste can be completely dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and zinc via electrowinning	Not useful; melts above 900 °C	DO NOT DUMP	DO NOT DUMP	Old brass may contain lead or nickel which is harmful to the environment
Bromoacetic acid	Neutralization with excess sodium hydroxide to sodium glycolate	Evaporates and burns at high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Bromocresol green	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot	Yes, but not recommended	No, neutralize first	May be harmful to water bodies; environmental effects unknown
Bromocresol purple	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot	Yes, but not recommended	No, neutralize first	May be harmful to water bodies; environmental effects unknown
Bromoform	Destruction with aqueous sodium hydroxide, which can be aided by methanol or acetone; Oxidation with Fenton's reagent	Evaporates, should not be attempted indoors	DO NOT DUMP	DO NOT DUMP	Dangerous to aquatic life at high concentrations, occurs naturally; May cause ozone depletion
Bromothymol blue	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot	Yes, but not recommended	No, neutralize first	May be harmful to water bodies
Bromous acid	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, thiosulfate	Decomposes to bromine, bromate	DO NOT DUMP	DO NOT DUMP	Bromous acid and its decomp. products are harmful
Bronze	Recycling; Traces of bronze waste can be completely dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and tin via electrowinning	Not useful; melts above 900 °C	DO NOT DUMP	DO NOT DUMP	Old bronze may contain arsenic, lead or nickel which is harmful to the environment
Butane	Incineration	Will burn to release carbon dioxide and water vapors	Not possible	Yes (heavier than air)	May induce greenhouse effect
Butanol	Incineration	Will burn to release carbon dioxide and water vapors	Not recommended	Not recommended	Poses toxicity to wildlife, water bodies
Butyl acetate	Incineration	Will burn to release carbon dioxide and water vapors	Not recommended	Not recommended	Poses toxicity to wildlife, water bodies
Butylated hydroxytoluene	Incineration, strong dilution	Will burn to release carbon dioxide, soot, VOCs, PAHs and water vapors	Strongly dilute it first	Strongly dilute it first	Harmful in large amounts
Butyric acid	Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain	Flammable (high concentrations), no dangerous combustion products, though the smoke will have a rancid smell	Yes, but recommended to neutralize first	Neutralize first	Safe, biodegradable; avoid dumping large amounts, dangerous to microfauna and water bodies
C-4	Very controlled incineration, done outside or in a kiln; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Displays toxicity to aquatic life; RDX can be degraded by the fungus Phanaerocheate chrysosporium; binders may be harmful for organisms
Cadmium acetate	Precipitation to cadmium sulfide, taken to hazardous waste disposal centers	Decomposes at high temperatures to cadmium oxide	DO NOT DUMP	DO NOT DUMP	Extremely toxic and dangerous to wildlife; Highly carcinogenic
Cadmium nitrate	Precipitation to cadmium sulfide, taken to hazardous waste disposal centers	Decomposes at high temperatures to cadmium oxide and nitrogen dioxide	DO NOT DUMP	DO NOT DUMP	Extremely toxic and dangerous to wildlife; Highly carcinogenic
Cadmium oxide	Precipitation to cadmium sulfide, taken to hazardous waste disposal centers	Decomposes and sublimes at high temperatures	DO NOT DUMP	DO NOT DUMP	Extremely toxic and dangerous to wildlife; Highly carcinogenic
Cadmium sulfate	Precipitation to cadmium sulfide, taken to hazardous waste disposal centers	Decomposes at high temperatures to basic sulfate then cadmium oxide releasing sulfur oxides	DO NOT DUMP	DO NOT DUMP	Very toxic and dangerous to wildlife; Highly carcinogenic
Caesium azide	Sodium nitrite, nitrous acid; recycling of caesium	Breaks down to caesium metal and gives off nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Caesium chloride	Recycling; Taken to waste disposal centers	Not useful in any way	Yes, though best to recycle it	Yes	Dangerous to organisms in very high concentrations; Caesium ions have similar toxicity to those of sodium and potassium
Caesium hydroxide	Neutralization with any acid, carbon dioxide; recycling;	Not useful; highly corrosive when hot to glass, most common metals	Yes, though best to recycle it	Yes, though best to recycle it	Dangerous to wildlife in short term (highly corrosive); Caesium ions have similar toxicity to those of sodium and potassium
Caffeine	Not required; Can be dumped almost anywhere	Sublimes; Oxidation Generates carbon oxides, water vapors, soot	Yes	Yes	Toxic to small animals, addictive to large organisms; biodegradable; occurs naturally
Calcium acetate	Pyrolysis; Not always required	Decomposes to calcium carbonate and acetone at high temperature, which burns in an oxygen-rich atmosphere	Yes	Yes	Biodegradable
Calcium bicarbonate	Any acid; not always required	Not useful; breaks down into calcium carbonate and carbon dioxide as the solution is heated	Yes	Yes	Safe, biodegradable; occurs naturally
Calcium carbide	Lots of water in an open space; low chain alcohols	Not useful	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife in short term (reacts with water); may also release phosphine gas if carbide sample is impure
Calcium carbonate	Any acid; not always required	Not useful; breaks down into calcium oxide and carbon dioxide at high temperatures	Yes, as powder	Yes	Safe, biodegradable; occurs naturally
Calcium chloride	Not required; Any soluble carbonate	Not useful; May release some HCl fumes if wet	Yes	Yes	Chloride ions may be harmful to certain plants
Calcium chromate	Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH	Decomposes, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are powerful carcinogens and very toxic to organisms
Calcium cyanamide	Lots of water	Not useful; Sublimes at very high temperatures	Yes, though not recommended	Yes	Slowly hydrolyzes to urea, which is a good plant fertilizer
Calcium fluoride	Not required	Unnecessary	Not useful	Yes	Safe to environment, occurs naturally
Calcium gluconate	Not required	Will result in calcium carbonate and give off carbon dioxide and water vapors at high temperatures	Yes	Yes	Not dangerous to wildlife
Calcium hydride	Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; water vapor can also be used; best performed in an open area	Decomposes to release hydrogen at very high temperatures	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, toxic to animals
Calcium hydroxide	Any acid	Will dehydrate to calcium oxide at high temperatures	Yes	No	Will "burn" grassland on contact
Calcium hypochlorite	Sodium bisulfite, sodium metabisulfite, sodium sulfite	Disproportionates into chlorate and chloride; will release chlorine and chlorine dioxide fumes	Yes	DO NOT DUMP	Toxic to all wildlife
Calcium nitrate	Not required; soluble carbonate or sulfate solution can be used if necessary	Not useful	Yes	OH YES	Good source of nitrogen for plants (fertilizer); May cause algal bloom in water bodies
Calcium oxide	Plenty of cold water, carbon dioxide, sodium/potassium bicarbonate	No	Do not dump	Do not dump	Burns grass on contact
Calcium perchlorate	Mixing it with a combustible material, like sugar and incineration	Will decompose at high temperatures to release oxygen	Do not dump	Do not dump	Toxic to plants
Calcium propionate	Not required; can be poured down the drain or dumped in trash	Will decompose at high temperatures to release various ketones, carbon oxides, water vapors	Yes	Yes	Large quantities are harmful to water bodies and small animals
Calcium sulfate	Not required; soluble carbonate solution can be used if gypsum is not desired as waste product	Becomes anhydrous at high temperatures (drierite); decomposes to calcium oxide at very high temperatures	Yes, with lots and lots of water	Yes	Anhydrous or hemihydrate form may burn grass on contact
Camphor	Not required	Generates smoke, carbon dioxide and water vapor	Yes	Yes	Safe, biodegradable; Occurs naturally
Capsaicin	Not required at low concentrations; high concentrations may require an oxidizer, like bleach	Generates irritant smoke, carbon dioxide, soot and water vapor	Yes	Yes	Harmful for mammals at high concentrations, otherwise relative safe, biodegradable; Occurs naturally
Carbon dioxide	Not required; Alkali hydroxides	Not necessary	Not possible (gaseous form), safe to pour (water solution)	Not possible (gaseous form), safe to pour (water solution)	Contributes to global warming
Carbon disulfide	Incineration, followed by scrubbing of sulfur dioxide (optional)	Burns in presence of oxygen, releasing carbon dioxide and sulfur dioxide	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Carbon monoxide	Oxidation with ozone; adsorbtion on activated charcoal; absorbtion in a solution of cuprous chloride in hydrochloric acid or cuprous chloride in ammonia^[5]^[6]	Not useful; burns in the presence of oxygen and hydrogen	Not possible	Not possible	Toxic to animals
Carbon tetrachloride	Sodium hydroxide excess; oxidation with Fenton's reagent	Results in phosgene in the presence of air	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife, sinks at the bottom of water bodies
Carbonic acid	Any base	Releases carbon dioxide fumes	Yes	Yes	Toxic to aquatic life in large quantities
Carminic acid	Not always required, any method will do	Decomposes, releases combustion gasses, POCs and VOCs	Yes	Yes	Low toxicity, occurs naturally
Cellulose	Any disposal method	Burns in air; decomposes to release carbon oxides, water vapors	Not recommended, may clog the plumbing	Yes, but avoid water bodies; bury it in ground instead	Safe, biodegradable; avoid dumping large amounts, as it poses choking hazard to most animals
Cerium(IV) oxide	Unnecessary, simply dump in trash; recycle	Releases absorbed water	Do not dump	Do not dump	Effects unknown, may be toxic
Charcoal	Burning, dumping in ground	Results in carbon dioxide and ash	DO NOT DUMP	OH YES!	Unless it adsorbed dangerous volatile compounds or heavy metals, it can be used as a fertilizer
Chevreul's salt	Oxidation with hydrogen peroxide to sulfate, followed by precipitation or reduction of copper ions to metal or hydroxide/oxide	Gives off water vapors when heated and sulfur oxides at very high temperatures	Not recommended	Not recommended	Little is known about its environmental effect; it is used as a fungicide and molluscicide^[7]
Chloral hydrate	Reducing with alkali hydroxide or magnesium, followed by incineration	Gives off hydrogen chloride fumes during burning/pyrolysis	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Chloric acid	Reducing with sodium sulfite, metabisulfite, bisulfite	Breaks down to perchloric acid and chlorine oxides	DO NOT DUMP	DO NOT DUMP	Strong oxidizing, toxic and corrosive to all wildlife and everything organic
Chlorine dioxide	Reduction with metabisulfite, sulfite or bisulfite	Evaporates and may explode	Do not dump	Do not dump	Toxic to all organisms, biocide
Chloroacetamide	Neutralization with excess sodium hydroxide to sodium glycolate products	Decomposes high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife, used as herbicide
Chloroacetic acid	Neutralization with excess sodium hydroxide to sodium glycolate	Evaporates and burns at high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Chloroacetone	Neutralization with a cooled solution of sodium or potassium hydroxide	Evaporates and burns at high temperatures, releasing extremely toxic and lachrymator fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Chloroauric acid	Reduction with a reducing agent, such as ascorbic acid, metabisulfite, sulfur dioxide	Gives off hydrogen chloride gases and leaves gold powder behind	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife; Best to try to recycle it
Chlorobenzene	Neutralization with Fenton's reagent; biodegradation with the bacterium Rhodococcus phenolicus	Gives off hydrogen chloride fumes during burning/pyrolysis, as well as various POCs and soot	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; chlorobenzene can persist in soil for several months, in air for about 3.5 days, and in water for less than one day
Chlorobutanol	Reducing with alkali hydroxide or magnesium, followed by incineration	Gives off hydrogen chloride fumes during burning/pyrolysis	Not recommended	Not recommended	Toxic to wildlife
Chloroform	Destruction with aqueous sodium hydroxide, which can be aided by methanol or acetone; Oxidation with Fenton's reagent	Boils to form vapor, should not be attempted indoors	DO NOT DUMP	DO NOT DUMP	May cause ozone depletion, dangerous to aquatic life
Chloromethane	Release outside in atmosphere; Photolysis; Destruction with aqueous sodium hydroxide, oxidation with Fenton's reagent (for solutions)	Not useful	DO NOT DUMP	DO NOT DUMP	May cause ozone depletion, dangerous to land and aquatic life
Chloroplatinic acid	Reduction to platinum metal, followed by recovery of the precious metal	Breaks down to platinum(II) chloride, then platinum metal	DO NOT DUMP	DO NOT DUMP	Toxic to organisms
Chlorosulfuric acid	Very careful addition to crushed ice, dilution, followed by neutralization with a base	Boils and decomposes releasing sulfur trioxide and HCl fumes	DO NOT DUMP	DO NOT DUMP	Highly corrosive and toxic to organisms
Chlorous acid	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, thiosulfate	Decomposes to perchloric acid, hydrogen chloride, chlorine dioxide, oxygen	DO NOT DUMP	DO NOT DUMP	Chlorous acid is a biocide
Chromic acid	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid	Decomposes to Cr₂O₃, releases oxygen and water vapors	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Chromium(III) chloride	Precipitation with a base; can be dumped in the trash, taken to a waste disposal facility or recycled	Melts and decomposes at high temperatures	Do not dump	Do not dump	Moderate toxicity for the environment
Chromium(III) oxide	Not required; can be dumped in the trash	At temperatures ~1000 °C it will become inert against the action of most reagents	Do not dump	Not recommended	Low reactivity, low danger for environment
Chromium(III) sulfate	Precipitation with a soluble hydroxide, followed by calcination to chromium(III) oxide	Not useful	Do not dump	Do not dump	Dangerous to wildlife in large amounts
Chromium(VI) oxide peroxide	Hydrolysis	Decomposes to harmless Cr(III)	Yes	Yes, but not recommended	Due to its instability, it poses low danger to environment
Chromium trioxide	Dissolving it in water and reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH	Decomposes to Cr₂O₃, releases oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Chromyl chloride	A supersaturated solution of a reducing agent, such as sodium sulfite, metabisulfite or thiosulfate at acidic pH	Not useful, boils off and fumes in contact with air moisture	DO NOT DUMP!	DO NOT DUMP!	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil; Carcinogenic
Citric acid	Any base, carbonate, bicarbonate, alkaline-earth oxide	Gives off carbon dioxide and water vapors	Yes	Yes	In wet environment it acts as fungi growth environment
Coal	Dumped in trash, incineration, taken to waste disposal centers	Gives off carbon dioxide and water vapors, leaving ash behind	DO NOT DUMP	Some types can be	Coal ash is harmful for the environement
Cobalt(II) chloride	Any soluble hydroxide, carbonate	May give off hydrogen chloride fumes in the presence of water	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; classified as "Substance of very high concern" in the EU
Cobalt(II) nitrate	Any soluble hydroxide, carbonate; Taken to disposal centers	Gives off nitrogen oxides fumes, leaving behind cobalt oxide residue	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, suspected carcinogen
Cobalt(II) sulfate	Any soluble hydroxide, carbonate; Taken to disposal centers	Gives off sulfur oxides fumes and sulfuric acid vapors, leaving behind cobalt oxide residue	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, suspected carcinogen
Cobalt (III) oxide	Not required	Not useful	Do not dump	Do not dump	Cobalt is necessary for vitamin B12 production
Congo red	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs	Do not dump	Do not dump	Dangerous to environment, carcinogen
Copper chromite	Not always required; can be dumped in trash	Not useful	Not recommended	Not recommended	Unknown environmental effects
Copper citrate	Recover copper via reduction; Discard in trash	Decomposes to copper oxide and releases various gasses	Yes, in small quantities	Yes, in small quantities	High levels of copper are dangerous to wildlife
Copper oxychloride	Reduction with a iron or zinc to metallic copper	Gives off HCl fumes and leaves behind CuO slag	DO NOT DUMP	DO NOT DUMP	Generally toxic to wildlife
Copper(I) acetylide	Addition of water, followed by careful addition of acid	Detonates	DO NOT DUMP!	DO NOT DUMP!	Copper ions may be harmful for wildlife and plants
Copper(I) chloride	Oxidizing with air/oxygen or H₂O₂ to the more soluble CuCl₂, followed by reduction to metallic copper with iron or zinc.	May hydrolyze in the presence of water and air to give off hydrogen chloride fumes	DO NOT DUMP	DO NOT DUMP	Oxidizes to copper(II) chloride in the presence of air, which is toxic and corrosive in water
Copper(I) oxide	Dissolving it in an acid, followed by reduction to metallic copper	Not useful	DO NOT DUMP	DO NOT DUMP	Generally considered harmful to wildlife
Copper(II) acetate	Reduction with iron or zinc to metallic copper, which is recycled	Gives off carbon oxides, water, acetic acid and acetone vapors	Not recommended	DO NOT DUMP	Unknown effects in the environment; presence of copper ions however is generally considered harmful
Copper(II) acetylsalicylate	Pyrolysis, incineration, oxidation with Fenton's reagent	Gives off carbon oxides and water vapors, as well as soot and VOCs	Not recommended	Not recommended	Unknown effects in the environment; presence of copper ions however is generally considered harmful
Copper(II) carbonate	Not required; can be neutralized with an acid and reduced to metallic copper	Will give off carbon dioxide fumes and leave CuO residues	Do not dump	DO NOT DUMP	Copper ions are considered harmful to the environment
Copper(II) chloride	Precipitate as carbonate or reduce to copper metal using aluminium, iron or zinc	Loses water and hydrogen chloride, turns brown	DO NOT DUMP	Yes, but far from any agricultural plants	Kills aquatic life and plant roots
Copper(II) hydroxide	Reduction to metallic copper	Loses water, yielding CuO	Do not dump	Only as agricultural product	Copper ions are considered harmful to most wildlife
Copper(II) nitrate	Any alkali or ammonium hydroxide, carbonate	Gives off nitrogen oxide and nitric acid fumes, leaving copper oxides/hydroxides slag	DO NOT DUMP	DO NOT DUMP	Copper ions may be harmful to wildlife; the nitrate group is a nitrogen source for plants
Copper(II) oxide	Dissolving it in an acid, followed by reduction to metallic copper	Not useful	DO NOT DUMP	DO NOT DUMP	Generally considered harmful to wildlife
Copper(II) perchlorate	Any alkali or carbonate, followed by reduction of perchlorate to chloride	Decomposes, releasing oxygen and leaving copper oxides/hydroxides slag	DO NOT DUMP	DO NOT DUMP	Copper ions and perchlorates are known to be harmful to wildlife
Copper(II) phosphate	Not always required	May decompose to copper oxide and phosphorus oxides at high temperatures, or elemental phosphorus in the presence of a reducing agent	Not recommended	Not recommended	Due to low solubility, it has lower toxicity than other copper compounds
Copper(II) sulfate	Reduction with aluminium, iron or zinc to metallic copper	Loses water when heated, releases sulfur trioxide at high temperatures, leaving behind CuO	Not recommended	Only as agricultural product	Shows toxicity to pests, wildlife
Crystal violet	Oxidized with a strong oxidizing solution, such as Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, water vapors, nitrogen oxides, soot	Yes, but not recommended	Neutralize first	May be harmful to water bodies; possesses antibacterial, antifungal, antihelminthic, antitrypanosomal, antiangiogenic, and antitumor properties
Curcumin	Not required	Releases carbon oxides and water vapors, as well as soot	Yes	Yes	Safe, biodegradable; occurs naturally
Cyanogen	Incineration outside; oxidation with an oxidizing solution	Flammable, burns in the presence of oxygen to release carbon dioxide and nitrogen gas	DO NOT DUMP	DO NOT DUMP	Deadly to wildlife
Cyanoguanidine	Not required; Can be poured into the ground	Decomposes giving off carbon dioxide, nitrogen, soot, water vapors	Yes	Yes	Low environmental impact, used as fertilizer
Cyanuric acid	Not required; Any base, carbonate, bicarbonate, alkaline-earth oxide can be used if desired	Gives off carbon dioxide and water vapors	Yes	Yes	Low environmental impact
Cyclam	Oxidation with Fenton's reagent or piranha solution	Generates carbon oxides, water vapor, soot and nitrogen vapors	DO NOT DUMP	DO NOT DUMP	Considered to be harmful, but little is known about its toxicity
Cyclen	Oxidation with Fenton's reagent or piranha solution	Generates carbon oxides, water vapor, soot and nitrogen vapors	DO NOT DUMP	DO NOT DUMP	Considered to be harmful, but little is known about its toxicity
Cyclohexane	Dilution with a flammable solvent and incineration; oxidation with Fenton's reagent	Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Cyclohexanol	Dilution with a flammable solvent and incineration; oxidation with Fenton's reagent	Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Cyclohexanone	Dilution with a flammable solvent and incineration	Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs	DO NOT DUMP	DO NOT DUMP	Low toxicity to organisms, but may be harmful to wildlife
Decalin	Mixed with a more flammable solvent and incinerated	Ignites at high temperatures and generates carbon oxides, water vapors, carbon monoxide, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife and water bodies
Decane	Incineration; Oxidation with Fenton's reagent	Ignites in air, gives off carbon dioxide and water vapors, soot	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life and organisms
Devarda's alloy	Dissolved in acid, followed by recovery of copper and zinc Dumped in trash	Melts between 490 to 560 °C	Not recommended	Do not dump	Toxic to wildlife
Dextrin	Any disposal method	Decomposes to release carbon oxides, water vapors	Yes	Yes	Safe, biodegradable
Diatomaceous earth	Any disposal method	Not effective	Yes	Yes	Toxic to small animals, otherwise relative safe
Diborane	Burned outside or in an incinerator; hydrolysis in water	Self-ignites in air above 38 °C	DO NOT DUMP	DO NOT DUMP	Boron compounds tend to be harmful for wildlife
Dichlorine heptoxide	Careful dissolving in cold water/crushed ice, followed by neutralization with base; Reduction with metabisulfite, sulfite or bisulfite	Evaporates and may explode	DO NOT DUMP	DO NOT DUMP	Toxic to all organisms, corrosive, toxic
Dichloroacetic acid	Neutralization and dehalogenation with excess sodium hydroxide; Reduction with metallic powders to acetic acid	Evaporates and burns at high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Dichloromethane	Destruction with aqueous sodium hydroxide, iron can also be used; Oxidation with Fenton's reagent	Boils to form vapor; pyrolysis at high temperatures yielding chlorine, hydrochloric acid and carbon monoxide	DO NOT DUMP	DO NOT DUMP	May cause ozone depletion, dangerous to aquatic life
Dicyanoacetylene	Incineration done outside	Extremely flammable, burns to release carbon dioxide, nitrogen gas and lots of heat	DO NOT DUMP	DO NOT DUMP	May be harmful to wildlife
Diethanolamine	Mixed with a more flammable solvent and incinerated	Yields carbon oxides, water vapor at high temperatures	Strongly diluted	Not recommended	Toxic to organisms, dangerous to aquatic and soil life
Diethyl ether	Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Extremely flammable, burns to release carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Dangerous to animals
Difluoroacetic acid	Neutralization with base, bacterial degradation, decarboxylation, taken to waste disposal centers	Decomposes, releases combustion gasses, HF, methylene fluoride	DO NOT DUMP!	DO NOT DUMP!	Displays moderate toxicity to most organisms
Diisopropyl ether	Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Extremely flammable, burns to release carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Dangerous to animals
Dimethyl dioxane	Incineration (no peroxides); Acid-catalyzed hydrolysis with sulfuric acid; If peroxides are present, addition of excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Incineration produces carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Unknown, possibly carcinogenic
Dimethyl ether	Incineration; can be released in open air	Extremely flammable, burns to release carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Low toxicity to wildlife
Dimethyl sulfate	Addition in large amounts of water or crushed ice, followed by addition of aq. alkali	Decomposes to dimethyl sulfate, DO NOT CALCINATE	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic
Dimethyl sulfoxide	Mixed with a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent if it has too much water	Results in carbon oxides, water vapors and sulfur dioxide	DO NOT DUMP	DO NOT DUMP	Waste water bacteria breaks it down into dimethyl sulfide, which is slightly toxic and has a strong disagreeable odor
Dimethylamine	Incineration	Burns in air, giving off carbon dioxide, nitrogen and water vapors	Not recommended	Not recommended	Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
Dimethyldioxirane	Ferrous sulfate, sodium metabisulfite, bleach	Diluted solutions will break down harmlessly	Safe, though best to neutralize it first	Neutralize first	Harmful for most organisms; acetone has low toxicity
Dimethylformamide	Oxidation with Fenton's reagent	Gives off toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Dimethylzinc	Very controlled hydrolysis, using alcohols	Ignites in open air; Decomposes above 200 °C	DO NOT DUMP!	DO NOT DUMP!	Zinc oxide fumes are harmful
Dinitrogen pentoxide	Addition to large amounts of cold water; neutralization with a base	Decomposes giving off nitrogen oxide fumes	DO NOT DUMP	DO NOT DUMP	Very corrosive to all organisms, may cause fires or explosions
Dinitrogen tetroxide	Addition to large amounts of cold water; neutralization with a base	Decomposes to nitrogen dioxide	DO NOT DUMP	DO NOT DUMP	Very corrosive to all organisms, may cause fires or explosions
Dinitrogen trioxide	Addition to large amounts of cold water; neutralization with a base	Decomposes to nitrogen dioxide	DO NOT DUMP	DO NOT DUMP	Very corrosive to all organisms, may cause fires or explosions
Diphenylamine	Dissolved in a flammable solvent and burned in an incinerator; Oxidation with Fenton's reagent	Gives off carbon oxides, soot, nitrogen and or nitrogen oxides and water vapor	DO NOT DUMP	DO NOT DUMP	Toxic to most wildlife
Diphenylmethanol	Mixed with a more flammable solvent and incinerated	Flammable, gives off carbon dioxide, PAHs, soot and water vapors	DO NOT DUMP	DO NOT DUMP	Potentially harmful for wildlife and aquatic life in large concentrations
Dipicolinic acid	Mixed with a more flammable solvent and followed by incineration	Gives off carbon oxides, water vapors and soot	Yes	Yes	Safe, biodegradable; occurs naturally
Dipotassium phosphate	Not required; Excess slaked lime can be used to precipitate calcium phosphate	Decomposes on heating at high temperatures to release water vapors, leaving a residue of potassium and phosphorus oxides	Yes	Oh yes	Safe, good fertilizer (potassium and phosphorus source)
Disulfur dichloride	Slaked lime or any other base, carbonate or bicarbonate	Boils off	DO NOT DUMP	DO NOT DUMP	Extremely toxic and corrosive
Di-tert-butyl ether	Incineration	Extremely flammable, burns to release carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Displays toxicity to wildlife
Dynamite	"Wetting" with a solvent, extraction of nitro and very careful neutralization of it; addition of more diatomaceous earth to further absorb the nitro	Will explode	DO NOT DUMP	DO NOT DUMP	Explosive hazard; otherwise good nitrogen source for plants
Dysprosium(III) nitrate	Precipitation with a base; recycling; separation can be done with a magnet, if no other magnetic salts are present	Decomposes to dysprosium(III) oxide, releases nitrogen dioxide	Do not dump	Do not dump	Effects unknown, may be toxic
Eosin Y	Not always required, any method will do	Decomposes, releases combustion gasses, POCs and VOCs	Yes	Yes	Unknown environmental effects
Erbium(III) oxide	Unnecessary, simply dump in trash	Releases absorbed water or carbon dioxide	Do not dump	Do not dump	Effects unknown, may be toxic
Eriochrome Black T	Poured down the drain	Decomposes giving off carbon and sulfur oxides, nitrogen, water, soot, VOCs	Yes	Yes, but not recommended	Environmental effects are currently unknown
Erythritol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity
Erythritol tetranitrate	Cooled aqueous solution of excess sodium hydroxide	Detonates at temperatures > 160 °C	Do not dump	In small amounts	Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
Ethane	Incineration	Flammable, gives off carbon dioxide and water vapors	Not possible	Not possible	Contributes to greenhouse effect
Ethanol	Not always required; Incineration	Yields carbon oxides, water vapor	Yes	Not recommended	Deadly to small animals on direct contact, dangerous to aquatic and soil life
Ethanolamine	Mixed with a more flammable solvent and incinerated	Yields carbon oxides, water vapor at high temperatures	Strongly diluted	Not recommended	Toxic to organisms, dangerous to aquatic and soil life
Ethenone	Absorbtion in aq. basic solution	Burns, releasing carbon oxides, water vapors	Not possible	DO NOT DUMP	Deadly to all living things, dangerous to aquatic and soil life, as it acidifies water
Ethyl acetate	Sodium hydroxide; Incineration	Combustion in the presence of air	Do not dump	Do not dump	Toxic to aquatic life
Ethyl cyanoacrylate	Incineration; dumped in trash	Combustion in the presence of air	Not recommended	Not recommended	Low toxicity to organisms
Ethyl formate	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Hazardous to environment in large amounts
Ethyl iodide	Alkali solution, followed by sodium thiosulfate to remove any free iodine	Decomposes to release iodine fumes	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife in high concentrations
Ethyl nitrate	Diluted alkali solution, recommended to be cooled first to prevent possible explosion	Will lead to explosion	No	No	Dangerous to wildlife
Ethylamine	Incineration	Burns in air, giving off carbon dioxide, nitrogen and water vapors	Not recommended	Not recommended	Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
Ethylene	Incineration	Flammable, gives off carbon dioxide and water vapors	Not possible	Not possible	Contributes to greenhouse effect
Ethylene glycol	Incineration	Gives off carbon oxides, water vapors and various volatile componds	Not recommended	DO NOT DUMP	Toxic to organisms, dangerous to aquatic life
Ethylene glycol dinitrate	Sodium hydroxide, followed by incineration	Detonation	DO NOT DUMP	DO NOT DUMP	Poses threat to animals, weak nitrogen source for plants
Ethylene oxide	Incineration; Hydrolysis	Burns, giving off combustion gases	DO NOT DUMP	DO NOT DUMP	Toxic and dangerous for all wildlife
Ethylenediamine	Neutralization with sulfuric acid; mixed with a flammable solvent, followed by an incineration; oxidation with potassium permanganate, followed by addition of sodium bisulfite, and neutralization with sodium hydroxide	Burns in air to release carbon dioxide, water vapor and nitrogen	DO NOT DUMP	Not recommended	Dangerous to aquatic life
Ethylenediaminetetraacetic acid	Poured down the drain if not bonded with heavy metals; otherwise taken to waste disposal centers	Breaks down to give carbon oxides, water vapor, various amines, soot	Yes	Yes, but not recommended	Displays some toxicity to many organisms lifeforms, dangerous to water bodies; can be broken down slowly by various microorganisms
Ethylenedinitramine	Incineration, done outside; Oxidation with Fenton's reagent	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Little information is given on its environmental impact
Eucalyptol	Incineration if desired; not always required, can be poured down the drain	Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere	Yes	Yes	Safe, biodegradable; Occurs naturally in various plants, like eucalyptus, peppermint, etc.
Fehling's solution	Precipitate copper with hydroxide/phosphate, recycle or safely dispose of; tatrate can be disposed of in any method	Decomposes, releases combustion gasses, leaves behind copper, sodium and potassium carbonate slag	Yes	Yes, but not in large quantities	Too much copper is dangerous for animals
Ferrocerium	Recycled Dumped in trash	Melts	Not recommended	Possible, though not recommended	Lanthanides show low toxicity to organisms
Ferroin	Dilution then poured down the drain	Decomposes	Dilute first	Dilute first	Phenanthroline is harmful to environment in high concentration
Ferulic acid	Mixed with a more flammable solvent and followed by incineration	Gives off carbon oxides, water vapors and soot	Yes	Yes	Safe, biodegradable; occurs naturally
Fluorene	Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent	Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Possibly toxic to animals, environmental effects unknown
Fluorenol	Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life, like invertebrates and algae; eugeroic in humans and mice
Fluorenone	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Possibly harmful to the environment
Fluorescein	Not always required, any method will do	Decomposes, releases combustion gasses, POCs and VOCs	Yes	Yes	Unknown effects
Fluoroacetic acid	Decarboxylation, bacterial degradation	Decomposes, releases combustion gasses, HF, methyl fluoride	DO NOT DUMP!	DO NOT DUMP!	Extremely toxic and deadly to insects and mammals, less so to reptiles and birds
Fluoroboric acid	Slowly and carefully added to cold calcium hydroxide solution	Decomposes in moist air releasing hydrogen fluoride	DO NOT DUMP	DO NOT DUMP	Extremely corrosive and toxic to all organisms
Fluorosulfuric acid	Slowly and carefully added to cold water or crushed ice, followed by neutralization with a base	Decomposes in moist air releasing sulfuric acid and hydrogen fluoride	DO NOT DUMP	DO NOT DUMP	Extremely corrosive and toxic to all organisms
Formaldehyde	Sodium hydroxide	Boils off	DO NOT DUMP	Yes, but only in some places, like farm land	Toxic to small animals, carcinogenic
Formamide	Dilution in a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent	Gives off carbon monoxide, dioxide, ammonia, hydrogen cyanide	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, teratogen
Formic acid	Sodium hydroxide	Gives off carbon monoxide and water vapors	DO NOT DUMP	DO NOT DUMP	Deadly to insects and aquatic life; reason why it's used to kill varroa
FOX-7	Incineration, done outside; Dilution, followed by addition of base, then neutralization of products	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Little information about its environmental impact is available
Fructose	Not required	Will decompose to caramel	Yes	Yes	Non-toxic to environment, nourishment for many organisms
Fumaric acid	Not always required, can be dumped in trash	Decomposes releasing acrid smoke, carbon oxides, water vapors and soot	Yes	Yes	Source of food for some organisms
Furan‎	Dilution with a flammable solvent followed by incineration	Gives off carbon oxides and water vapor	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife, carcinogenic
Furfural‎	Incineration	Gives off carbon oxides and water vapor	Debatable	Debatable	Low toxicity to wildlife
Galactitol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity
Gasoline	Incineration	Burning gives combustion gasses as well as soot, carbon monoxide and various VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; very dangerous for aquatic life
Gelatin	Not required	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for many organisms
Gelignite		Will explode	DO NOT DUMP	DO NOT DUMP	Explosive hazard; otherwise good nitrogen source for plants
Glucose	Not required; can be disposed in any way	Will decompose to caramel and carbon if heated too long	Yes	Yes	Non-toxic to environment, nourishment for many organisms
Glutamic acid	Not required; can be disposed in any way	Will char and release carbon dioxide, water vapors and nitrogen	Yes	Yes	Non-toxic to environment, nourishment for many organisms
Glycerol	Not required; Incineration	Pyrolysis gives acrolein	Yes	Yes	Safe, biodegradable
Glycine	Not required; can be disposed in any way	Will char and release carbon dioxide, water vapors and nitrogen	Yes	Yes	Non-toxic to environment, nourishment for many organisms
Glycolic acid	Not required; can be disposed in any way	Will char and release carbon dioxide, water vapors	Yes	Yes	Low-toxicity for the environment
Glycoluril	Not required; can be disposed in any way	Will char and release carbon dioxide, water vapors	Yes	Yes	Low-toxicity for the environment
Glyoxal	Incineration; Precipitation with amines (urea, guanidine, etc.)	Burns, releasing carbon oxides and water vapors; some will evaporate when heated	DO NOT DUMP	DO NOT DUMP	Toxic to the wildlife, suspected carcinogen
Guanidine	Not required, can be discarded in any way	Pyrolysis gives nitrogen and carbon oxides	Yes	Yes	Safe, biodegradable
Guanidinium bicarbonate	Not required, can be dumped in ground; Pyrolysis done outside	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides	Yes, but not recommended	Yes	Safe, nitrogen source for plants; Guanidine derivates occur in guano
Guanidinium carbonate	Not required, can be dumped in ground; Pyrolysis done outside	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides	Yes, but not recommended	Yes	Safe, nitrogen source for plants; Guanidine derivates occur in guano
Guanidinium chloride	Not required; Careful and controlled pyrolysis	Pyrolysis gives nitrogen, water, chlorine and carbon/nitrogen oxides	Yes, but not recommended	Yes	Safe, nitrogen source for plants; Guanidine derivates occur in guano; Chlorides however are harmful for plants in large amounts
Guanidinium nitrate	Not required, can be dumped in ground; Careful and controlled pyrolysis	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures	Not recommended	Yes	Safe, nitrogen source for plants; Guanidine derivates occur in guano
Guanidinium perchlorate	Careful and controlled pyrolysis Reduction with metallic iron under UV light, in low oxygen	Pyrolysis gives nitrogen, water, chlorine and carbon/nitrogen oxides; may explode at high temperatures	DO NOT DUMP	DO NOT DUMP	Perchlorates are harmful for the environment
Guanidinium sulfate	Not required, can be dumped in ground; Pyrolysis done outside	Pyrolysis gives nitrogen, water and carbon/nitrogen/sulfur oxides	Yes, but not recommended	Yes	Safe, nitrogen and sulfur source for plants; Guanidine derivates occur in guano
Guar gum	Not required	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for many organisms
Gum arabic	Not required	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for many organisms
Haematoxylin	Not required	Gives off carbon oxides, water vapor and soot	Yes	Yes	Safe, biodegradable; occurs naturally
Hematein	Not required	Gives off carbon oxides, water vapor and soot	Yes	Yes	Safe
Heptane	Incineration; Oxidation with Fenton's reagent	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life and organisms
Hexamethylene triperoxide diamine	Adding a mixture of zinc sulfate, copper(II) chloride with Zn and Cu powder in a 5:5:1 ratio to the peroxide solution, in the presence of small amounts of sulfuric acid	Do not use heat, as it will lead to detonation	DO NOT DUMP	Debatable	Slowly breaks down to harmless products
Hexamethylphosphoramide	Treatment with hydrochloric acid; dilution of resulting products, followed by disposal	Breaks down yielding phosphine, phosphorus oxides and nitrogen oxides.	DO NOT DUMP	DO NOT DUMP	Carcinogenic
Hexamine	Incineration	Burning in air yields carbon oxides, water vapor, nitrogen; Pyrolysis yields formaldehyde, carbon oxides, ammonia and nitrogen fumes, HCN (t > 800°C)	Yes	Yes	Nitrogen source for plants
Hexane	Incineration; Oxidation with Fenton's reagent	Results in carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life
Hexanitrohexaazaisowurtzitane	Incineration, done outside	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Little information about its environmental impact
HMX	Incineration, done outside; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Displays moderate toxicity to aquatic life; can be degraded by some microorganisms
Holmium citrate	Recycling	Gives off carbon dioxide and water vapors, leaving holmium(III) oxide behind	Not recommended	Not recommended	Low toxicity to wildlife
Hydrazine	Diluted solution of calcium hypochlorite	Gives off toxic fumes; may lead to detonation if temperature is too high	DO NOT DUMP	DO NOT DUMP	Toxic to all life
Hydrazine hydrochloride	Diluted solution of calcium hypochlorite	Gives off toxic fumes; may lead to detonation if temperature is too high	DO NOT DUMP	DO NOT DUMP	Toxic to all life
Hydrazine nitrate	Diluted in lots of water, followed by slow addition of a solution of calcium hypochlorite	Decomposes, gives off toxic fumes; may lead to detonation if temperature is too high	DO NOT DUMP	DO NOT DUMP	Toxic to all life
Hydrazine perchlorate	Diluted in lots of water, followed by slow addition of a solution of calcium hypochlorite	Decomposes, gives off toxic fumes; may lead to detonation if temperature is too high	DO NOT DUMP	DO NOT DUMP	Toxic to all life
Hydrazine sulfate	Diluted solution of calcium hypochlorite	Gives off toxic fumes; may lead to detonation if temperature is too high	DO NOT DUMP	DO NOT DUMP	Toxic to all life
Hydrazoic acid	Sodium nitrite or nitrous acid	Will lead to detonation for concentrated solutions	DO NOT DUMP	DO NOT DUMP	Dangerous to all life
Hydrobromic acid	Any base, carbonate, bicarbonate; sodium thiosulfate can also be used	Boils off the acid, resulting in extremely toxic and corrosive fumes; will lead to decomposition to elemental bromine	NO! Neutralize first	NO! Neutralize first	Toxic and very corrosive
Hydrochloric acid	Any alkali or alkaline-earth carbonate, bicarbonate	DON'T! Results in acidic vapors, extremely dangerous and corrosive	NO! Neutralize first	NO!	Toxic to wildlife and corrosive to minerals
Hydrofluoric acid	Calcium hydroxide, carbonate	DON'T! Results in acidic fumes, which on contact with skin will lead to burns and death	DO NOT DUMP	DO NOT DUMP	Calcium fluoride is more inert than most fluorides and poses little toxicity to wildlife; occurs naturally
Hydrogen bromide	Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense mist; sodium thiosulfate can be used for removing free bromine	DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting bromine vapors	NO! Neutralize first	NO! Neutralize first	Corrosive to organisms and rocks; Bromides have little effect to wildlife
Hydrogen chloride	Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense ammonium chloride mist	NO	DO NOT DUMP	DO NOT DUMP	Corrosive for rocks, toxic for all wildlife
Hydrogen cyanide	Absorbtion in water, base, followed by oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas	Burns if ignited, but excess oxygen is required for complete burning	DO NOT DUMP	DO NOT DUMP	Highly toxic for all wildlife
Hydrogen fluoride	Calcium hydroxide, carbonate, bicarbonate; for gaseous form, excess ammonia can be used, though will result in a dense ammonium fluoride mist; further treatment with calcium hydroxide, carbonate will convert it to the more safe CaF₂	NO	DO NOT DUMP	DO NOT DUMP	Corrosive for all life, inorganic materials, toxic for all wildlife
Hydrogen iodide	Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense mist; sodium thiosulfate can also be used	DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting iodine vapors	NO! Neutralize first	NO! Neutralize first	Corrosive to organisms and rocks; Iodides have little toxicity to wildlife
Hydrogen peroxide	Manganese dioxide, iron(III) oxide	Diluted solutions will break down harmlessly; Very concentrated solutions may explode if contaminated	Not if concentrated solutions	DO NOT DUMP	Deadly for microbial life, extremely toxic for small animals and aquatic life
Hydrogen sulfide	Hydrogen peroxide; sulfur dioxide	Not useful	DO NOT DUMP	Not recommended	Very toxic for animals at high concentrations; Occurs naturally, but at low concentrations
Hydroiodic acid	Any alkali or alkaline-earth carbonate, bicarbonate	DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting iodine vapors	NO! Neutralize first	NO! Neutralize first	Corrosive to organisms and rocks; Iodides have little toxicity to wildlife
Hydroquinone	Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with chromic acid, piranha solution, Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	DO NOT DUMP	DO NOT DUMP	Occurs naturally; toxic and possibly carcinogen in high doses
Hydroxyacetone	Mixed with a flammable solvent and incinerated; Diluted in water and poured down the drain	Burns at high temperatures, releasing carbon dioxide, water vapors, acrolein	Dilute first	Dilute first	Little environmental impact from the literature available
Hydroxylamine	Reduction with Zn/HCl; Dilution followed by decomposition with ferrous or ferric salts; Addition of ketone or aldehyde then heated to decompose	Explodes (free base)	DO NOT DUMP	DO NOT DUMP	Toxic for animals at high concentrations
Hydroxylammonium chloride	Dilution followed by addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl	Decomposes releasing HCl and nitrogen oxides	DO NOT DUMP	DO NOT DUMP	Toxic for animals at high concentrations
Hydroxylammonium nitrate	Dilution followed by decomposition with ferrous or ferric salts; Addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl	Explodes	DO NOT DUMP	DO NOT DUMP	Toxic for animals at high concentrations
Hydroxylammonium perchlorate	Dilution followed by precipitation of perchlorate with potassium ions, filtration then neutralization of hydroxylamine via addition of ketone or aldehyde, then heated to decompose; Reduction with Zn/HCl	Decomposes releasing nitrogen oxides, nitrogen, HCl, water vapors; explodes at high temperature	DO NOT DUMP	DO NOT DUMP	Toxic for animals at high concentrations
Hydroxylammonium sulfate	Dilution followed by addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl	Decomposes releasing sulfur and nitrogen oxides	DO NOT DUMP	DO NOT DUMP	Toxic for animals at high concentrations
Hypochlorous acid	Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate	Decomposes to chlorine, chloric acid, hydrogen chloride	Yes, but recommended to neutralize first	DO NOT DUMP	Very toxic and corrosive to organisms, especially aquatic ones
Hypophosphorous acid	Diluted cooled hydrogen peroxide solution	Decomposes to phosphoric acid, phosphorous acid, phosphine	DO NOT DUMP	DO NOT DUMP	Harmful and corrosive to organisms, especially aquatic ones
Iditol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity
Indigo dye	Not required; can be dumped in trash	Yields carbon oxides, water vapors, nitrogen, soot, PAHs	Yes	Yes	Low toxicity; occurs naturally
Ink	Not always required	Yields carbon oxides, water vapors, leaves ash behind	Yes	Yes	Low toxicity; silver and copper-based inks may be harmful
Inositol	Not required	Yields carbon oxides, water vapor	Yes	Yes	Low toxicity, occurs naturally in plants
Iodic acid	Neutralization with potassium, calcium bases, followed by reduction with a suitable reducing agent to iodide; thiosulfate added to remove any free iodine	Decomposes at high temperatures to iodine pentoxide which further decomposes above 300 °C to iodine and oxygen	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, both animals and plants
Iodine pentoxide	Neutralization with a solution sodium thiosulfate	Decomposes above melting point, releasing iodine and oxygen above 300 °C	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to wildlife
Iodine trichloride	Neutralization with a cooled diluted solution of sodium hydroxide and sodium thiosulfate	Decomposes above melting point, releasing ICl and chlorine	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to wildlife
Iodoacetic acid	Neutralization with excess sodium hydroxide to sodium glycolate	Evaporates and burns at high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Iodoform	Destruction with aqueous sodium hydroxide	Melts and decomposes near boiling point, releasing iodine, hydrogen iodine fumes	Neutralize first	DO NOT DUMP	Dangerous to wildlife, especially if ingested; small animals are harmed easily
Iron(II) chloride	Calcium hydroxide (slaked lime)	Gives off hydrogen chloride fumes in air and or moisture	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Iron(II) sulfate	Not always required; Ammonium hydroxide, carbonate/bicarbonate	Breaks down to iron(III) oxide and gives off sulfur dioxide and trioxide fumes	Yes	Yes	Safe, used in agriculture as iron supplement; May cause algal bloom if released in water bodies
Iron(II,III) oxide	Not required	Results in iron(III) oxide in the presence of air	Yes, but not advised	Yes	Safe, occurs naturally
Iron(III) chloride	Calcium hydroxide (slaked lime)	Gives off hydrogen chloride fumes	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Iron(III) nitrate	Calcium hydroxide (slaked lime), followed by dilution	Gives off nitrogen oxide fumes, leaving behind iron(III) oxide	Dilute first!	Dilute first!	Harmful to environment in large and concentrated amounts; Diluted iron nitrate is a good source of iron and nitrogen for plants
Iron(III) oxide	Not required	Not useful	Yes, but not advised	Yes	Safe, sometimes used in agriculture as iron supplement; May cause algal bloom if released in water bodies
Iron(III) sulfate	Calcium hydroxide (slaked lime)	Breaks down into iron(III) oxide and gives off sulfur oxides	DO NOT DUMP	DO NOT DUMP	Corrosive, toxic to aquatic life
Iron pentacarbonyl	Incineration; oxidation with peroxide; both done outside	Decomposes, releasing copious amounts of iron oxide fumes	DO NOT DUMP	DO NOT DUMP	Carbon monoxide is deadly to organisms
Isatin	Not required; can be dumped in trash	Yields carbon oxides, water vapors, nitrogen, soot, PAHs	Yes	Yes	Low toxicity; occurs naturally
Isobutanol	Incineration	Flammable, gives off carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic life
Isopropanol	Incineration	Flammable, gives off carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic life
Isopropyl nitrate	Photolysis; Hydrolysis with cold sodium hydroxide solution	Ignites and burns, may explode	DO NOT DUMP	DO NOT DUMP	Toxic to organisms; nitrate source for plants
Isopropyl nitrite	Neutralization with sodium hydroxide, followed by incineration	Detonation	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife and aquatic life
Isopropylamine	Neutralization with any acid; incineration; oxidation with Fenton's reagent	Flammable, burns to release carbon dioxide, water vapors and nitrogen; nitrogen dioxide may also be released	DO NOT DUMP	DO NOT DUMP	Toxic to all wildlife and especially aquatic life
Juglone	Controlled oxidation with Fenton's reagent	Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.	Yes, but dilute first	Do not dump	Occurs naturally; toxic to microorganisms and other plants
Kanthal	Taken to scrap metal centers Dumped in trash	Melts at 1,500 °C	Do not dump	Do not dump	Toxic to wildlife due to chromium
Kerosene	Incineration	Burns in the presence of air, to give off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic environment
Khusimol	Incineration; not required	Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere	Yes	Yes	Safe, biodegradable; Occurs naturally in various plants
Kojic acid	Mixed with a more flammable solvent and followed by incineration	Gives off carbon oxides, water vapors and soot	Yes	Yes	Safe, biodegradable; occurs naturally
KS Fluid	Immersion underwater to prevent self-ignition, followed by adding a flocculating or a thickening agent to trap the phosphorus inside; resulting mass should be incinerated in a special incinerator	Pyrophoric, releases toxic sulfur dioxide and phosphorus pentoxide fumes	DO NOT DUMP!	DO NOT DUMP!	Pyrophoric, toxic and corrosive to the environment
Lactic acid	Mixed with a more flammable solvent and followed by incineration	Gives off carbon oxides, water vapors and soot	Yes	Yes	Safe, biodegradable; occurs naturally
Lead(II) acetate	Alkali carbonate or hydroxide; Lead precipitate should be taken to disposal facilities	Results in lead oxides; Yields carbon oxides, water vapors	DO NOT DUMP!	DO NOT DUMP!	Extremely toxic to all life, due to the good solubility of lead acetate
Lead(II) azide	Nitrous acid, ammonium acetate, sodium dichromate	Decomposes to lead/lead(II) oxide releasing nitrogen gas and may explode during decomposition	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Lead(II) chloride	Taken to hazardous waste disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Lead(II) chromate	Taken to hazardous waste disposal centers	Breaks down to its component oxides at high temperatures	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment
Lead(II) iodide	Taken to hazardous waste disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Lead(II) nitrate	Precipitation with a sulfide, carbonate or oxalate; wastes are to be taken to hazardous waste disposal centers	Breaks down in to lead oxide and releases nitrogen dioxide fumes	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife due to its good solubility in water
Lead(II) oxide	Taken to hazardous waste disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Lead(II) sulfide	Taken to hazardous waste disposal centers	Decomposes around 500-1000 °C in air to yield sulfur and lead oxides and lead metal fumes	DO NOT DUMP	DO NOT DUMP	Occurs naturally; Extremely toxic to the environment and all life
Lead(II,IV) oxide	Taken to hazardous waste disposal centers	Not effective	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Lead(IV) acetate	Precipitate with an excess of carbonate, oxalate or a sulfide; waste is to be taken to hazardous waste disposal centers	Results in lead oxide and acetic acid, carbon dioxide, water vapor	DO NOT DUMP	DO NOT DUMP	Corrosive and very toxic to all organisms
Lead(IV) oxide	Taken to hazardous waste disposal centers	Not useful	DO NOT DUMP	DO NOT DUMP	Extremely toxic to wildlife
Lead styphnate	Careful and controlled destruction using an oxidizing solution; insoluble lead wastes should be taken to hazardous waste disposal centers	Explodes, releasing lead oxide fumes	DO NOT DUMP	DO NOT DUMP	Extremely toxic to all organisms; lead is a known neurotoxin
Limonene	Incineration; oxidation; not always required	Results in carbon dioxide, water vapor, soot	Yes	Yes	Safe, biodegradable; occurs naturally
Lithium aluminium hydride	Neutralization with an alkali or carbonate solution; recycling of lithium ions	Decomposes to release hydrogen	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, will increase the aluminium concentration in soil or water
Lithium azide	Acidified sodium nitrite, nitrous acid	Detonates and gives off nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Lithium borohydride	Neutralization with an alkali or carbonate solution; Slow addition in a large volume of water or alcohol;Recycling of lithium ions	Decomposes to release hydrogen	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, will increase the boron concentration in soil or water
Lithium chloride	Not required	Hydrated form will give some oxychloride salt	Yes	Yes	Increases the chloride concentration in soil as well as lithium
Lithium hydride	Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; best performed in an open area	Decomposes to release hydrogen at very high temperatures	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, toxic to animals
Lithium hydroxide	Any acid, carbon dioxide, sulfur dioxide; recycling is a good choice	Breaks down to lithium oxide and water vapor	Yes	Neutralize first	Lithium has little effect to plant life, but will affect the nervous system of animals when ingested in excess
Lithium hypochlorite	Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide	Melts and decomposes, releasing chlorine	Neutralize first	Neutralize first	Corrosive and harmful to organisms, especially aquatic ones
Lithium nitrate	Precipitation; recycling; mixed with a combustible material and ignited	Breaks down to lithium oxide and nitrogen oxides	Yes, dilute first	Yes, dilute first	Nitrate is a source of nitrogen for plants; lithium has little effect to plant life, but will affect the nervous system of animals when ingested in excess
Lithium nitrite	Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to lithium carbonate or sulfate	Decomposes to form lithium oxide/hydroxide and releases nitrogen oxides fumes	Yes, but not recommended	No	Unlike nitrates, nitrites are poor source of nitrogen for plants; Lithium may be harmful for the central nervous system; Nitrites are toxic for most animals
Litmus	Not required; can be poured down the drain	Gives off carbon oxides, water vapor and soot	Yes	Yes	Safe, occurs naturally

M-Z

Substance	Neutralization	Heat treatment	Down the drain	Into the soil	Environmental considerations
Magnalium	Diluted acid; Incineration	Burns releasing aluminium and magnesium oxides	DO NOT DUMP	DO NOT DUMP	Harmful for wildlife
Magnesium carbonate	Any acid; not always required	Not useful; breaks down into magnesium oxide and carbon dioxide at high temperatures	Yes, as powder	Yes	Safe, biodegradable; occurs naturally
Magnesium chloride	Not required	Hydrated form gives the oxychloride salt	Yes	Yes	May increase the magnesium and chloride content in the soil significantly
Magnesium diboride	Careful hydrolysis	Oxidizes at high temperatures in air	DO NOT DUMP	DO NOT DUMP	Boron compounds are harmful
Magnesium hydroxide	Not always required; any acid can be used, though a weak one is more economical	Decomposes at 350 °C to magnesium oxide and releases water vapors	Yes	Yes	Raises the soil pH; source of magnesium for plants
Magnesium nitrate	Not required; an aqueous carbonate solution, like potassium carbonate can be used if necessary	Decomposes above 330 °C to give off oxygen and nitrogen oxides	Yes	OH YES	Good source of nitrogen and magnesium for plants (fertilizer); May cause algal bloom in water bodies
Magnesium oxide	Not always required; any acid can be used, though a weak one is more economical	Not effective	Yes	Yes	Raises the soil pH; source of magnesium for plants
Magnesium sulfate	Not required	Will dehydrate when heated; Gives off sulfur oxides at very high temperature	Yes	Yes	Source of magnesium for plants
Malonic acid	Not always required, can be dumped in trash	Decomposes releasing acrid smoke, carbon oxides, water vapors and soot	Yes	Yes	Maybe be source of food for some organisms
Manganese dioxide	Oxalic acid	Converts it into other oxides	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Manganese heptoxide	Aqueous solutions or suspensions of base, carbonate, bicarbonate	Breaks down to manganese dioxide and gives off ozone; may explode	DO NOT DUMP	DO NOT DUMP	Burns organic material on contact, even wet organic material
Manganese(II) chloride	Precipitated to managnese dioxide; Taken to waste disposal facilities; Dumped in trash	Decomposes at high temperatures	Yes, but in small quantities	Yes, but in small quantities	Classified as dangerous to environment
Manganese(II) sulfate	Dumped in trash	Decomposes at high temperatures	Yes, but in small quantities	Yes, but in small quantities	Classified as dangerous to environment
Mannitol	Not required	Melts; Releases carbon dioxide and water vapor at high temperatures	Yes	Yes	Cannot be digested by most organisms, but has no dangerous effects on wildlife
Mannitol hexanitrate	Cooled aqueous solution of diluted sodium hydroxide, added in excess	Detonates at temperatures > 120 °C	DO NOT DUMP	In small amounts	Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
Menthol	Incineration; not required	Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere	Yes	Yes	Safe, biodegradable; Occurs naturally in various plants, like peppermint
Mercury sulfide	Taken to hazardous waste disposal centers	Decomposes over 580 °C to yield sulfur oxides and mercury vapors	DO NOT DUMP	DO NOT DUMP	Occurs naturally; Extremely toxic to the environment and all life
Mercury(II) chloride	Conversion to cinnabar; Taken to hazardous waste disposal centers	Sublimes	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Mercury(II) fulminate	Conversion to cinnabar; Taken to hazardous waste disposal centers	Explodes, giving off carbon oxides, nitrogen gas and hazardous mercury vapors	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Mercury(II) nitrate	Conversion to cinnabar; Taken to hazardous waste disposal centers	Decomposes, releasing nitrogen dioxide, oxygen, mercury(II) oxide, mercury vapors	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Mercury(II) oxide	Conversion to cinnabar; Taken to hazardous waste disposal centers	Decomposes over 500 °C to yield mercury vapors	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Mercury(II) sulfate	Taken to hazardous waste disposal centers; Conversion to cinnabar	Decomposes over 450 °C to yield sulfur oxides and mercury vapors	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Mercury(II) thiocyanate	Conversion to mercury(II) sulfide; Taken to hazardous waste disposal centers;	Decomposes over 165 °C to yield a residue known as "Pharaoh's snake", as well as sulfur oxides and mercury vapors	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment and all life
Metformin	Strong oxidizing solution, like chromic acid	Decomposes giving off carbon oxides, nitrogen, water, soot	Do not dump	Do not dump	High nitrogen content may be suitable for plants; large amounts may be harmful for fauna
Methane	Incineration	Releases carbon dioxide and water vapors	Not possible	Not possible	Contributes to global warming
Methanol	Incineration	Will give off carbon dioxide and water vapor, as well as some formaldehyde if not enough oxygen	DO NOT DUMP	DO NOT DUMP	Very toxic to wildlife
Methyl acetate	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Hazardous to environment in large amounts
Methyl blue	Poured down the drain	Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs	Yes	Yes, but not recommended	May be harmful to microorganisms, fauna and water bodies
Methyl cellosolve	Mixed with a more flammable solvent and incinerated	Generates smoke, carbon dioxide and water vapors	Yes, but dilute it first	Yes, but dilute it first	Relative safe, harmful in large amounts
Methyl ethyl ketone	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Methyl ethyl ketone peroxide	Reduction with a reducing agent, such as sodium sulfite; Test for peroxides after neutralization; If no peroxides present, incineration or other proper disposal method	Decomposes and explodes	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Methyl formate	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Hazardous to environment in large amounts
Methyl iodide	Alkali solution, followed by sodium thiosulfate to remove any free iodine	Decomposes to release iodine fumes	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife in high concentrations; Occurs naturally in low concentrations
Methyl isobutyl ketone	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife
Methyl nitrate	Diluted alkali solution, recommended to be cooled first to prevent possible explosion	Will lead to explosion	No	No	Dangerous to wildlife
Methyl orange	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs	No, neutralize first	No, neutralize first	Dangerous to environment, mutagen
Methyl red	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs	Yes, but not recommended	No, neutralize first	May be harmful to water bodies
Methyl salicylate	Incineration; Not always required	Gives off carbon dioxide and water vapors	Yes	Yes	Low toxicity to environment in small amounts
Methyl tert-butyl ether	Incineration	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Classified as hazardous to environment and ground water
Methyl yellow	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs	DO NOT DUMP	DO NOT DUMP	Dangerous to environment, mutagen, carcinogen
Methylamine	Incineration	Burns in air, giving off carbon dioxide, nitrogen and water vapors	Not recommended	Not recommended	Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
Methylene blue	Poured down the drain	Decomposes giving off carbon dioxide, sulfur oxides, nitrogen, water, hydrogen chloride vapors, VOCs, PAHs and other harmful compounds	Yes	Yes, but not recommended	May be harmful to microbial life, fauna and water bodies
Mineral oil	Incineration	Will burn at high temperatures, releasing carbon oxides, water vapors and soot	No	No	Oils float on water bodies and inhibit the cellular breathing of many organisms
Mischmetal	Recycled Dumped in trash	Melts between 790 – 1010 °C	Not recommended	Possible, though not recommended	Lanthanides show low toxicity to organisms
Monopotassium phosphate	Not required; Excess slaked lime can be used to precipitate calcium phosphate	Decomposes on heating at high temperatures to release water vapors, leaving a residue of potassium and phosphorus oxides	Yes	Yes	Safe, good fertilizer (potassium and phosphorus source)
Morpholine	Mixed with a flammable solvent and burned	Decomposes, releases combustion gasses, VOCs	DO NOT DUMP	DO NOT DUMP	May cause death of aqueous organisms
Mu-metal	Recycling Taken to scrap metal centers	Melts at around 1454°C	DO NOT DUMP!	DO NOT DUMP!	Dangerous to wildlife due to nickel and chromium content
Murexide	Poured down the drain	Decomposes giving off carbon oxides, nitrogen, water, soot, VOCs	Yes	Yes, but not recommended	Environmental effects are currently unknown
N-(1-Naphthyl)ethylenediamine dihydrochloride	Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid	Decomposes, releasing carbon oxides, nitrogen oxides, water vapors, PAHs, soot	Dilute first	Do not dump	Possibly harmful for the environment; little data available on its environmental effects
N-Allylthiourea	Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid	Generates carbon oxides, water vapor, sulfur oxides, soot and nitrogen	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife; Nitrification inhibitor, slows the nitrification of ammonia
N-Methyl-2-pyrrolidone	Mixed with a more flammable solvent, followed by incineration outside or in an incinerator; Oxidation with Fenton's reagent under controlled conditions	Gives off toxic fumes or carbon dioxide, nitrogen oxides, VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
NaK	Long-chained alcohols, diluted with an alkane	Ignites in air	DO NOT DUMP!	DO NOT DUMP!	Pyrophoric, both alloy and reaction products corrosive to wildlife
Naphtha	Incineration	Burning gives combustion gasses as well as soot, carbon monoxide and various VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; very dangerous for aquatic life
Naphthalene	Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent	Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Naphthol Green B	Poured down the drain; oxidized with a strong oxidizing solution, neutralized then poured down the drain	Decomposes giving off carbon and sulfur oxides, nitrogen, water, soot, VOCs	Yes	Yes, but not recommended	May be harmful to microorganisms, fish in water bodies
Neodymium iron boron magnet	Recycled Dumped in trash	Loses magnetism when heated and melts at high temperatures	Not recommended	Possible, though not recommended	Lanthanides show low toxicity to organisms
Neodymium oxalate	Pyrolysis, followed by recycling of Nd slag	Gives off carbon oxides, leaving neodymium oxides and hydroxides behind	Do not dump	Do not dump	Presents toxicity to wildlife due to the oxalate group
Niacin	Dumped in trash, poured down the drain	Sublimes and decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives	Yes	Yes	Low toxicity, essential nutrient for life
Nichrome	Recycled Dumped in trash	Melts at 1400 °C	Do not dump	Do not dump	Nickel and chromium are harmful for wildlife
Nickel hydrazine nitrate	Safe detonation in remote area	Detonates	DO NOT DUMP	DO NOT DUMP	Nickel is very toxic for animals; hydrazine is very toxic to environment
Nickel hydrazine perchlorate	Strong dilution in water, followed by CAREFUL addition of a diluted base; precipitation of nickel	Detonates	DO NOT DUMP!	DO NOT DUMP!	Nickel is harmful for animals; hydrazine is very toxic to environment; perchlorates are toxic for animals and plants
Nickel(II) nitrate	Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers	Gives off nitrogen oxide fumes, leaving behind nickel oxide slag	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, allergen
Nickel(II) perchlorate	Reduction of perchlorate to chloride; Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers	Gives off chlorine oxide fumes, leaving behind nickel oxide slag; may decompose violently if organic contaminant present	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, allergen
Nickel(II) sulfate	Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers	Gives off sulfur oxide fumes, leaving behind nickel oxide slag	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, allergen
Nicotinamide	Dumped in trash, poured down the drain	Sublimes and decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives	Yes	Yes	Low toxicity, essential nutrient for life
Nicotine	Oxidation; Photolysis; Pyrolysis with selenium	Generates carbon oxides, water vapors, soot, VOCs and toxic nicotine vapors	Acceptable in small quantities	Only as insecticide	Deadly to small animals, toxic and addictive to large organisms; absorbs through skin; biodegradable
Nile red	Not required	Gives off carbon oxides, water vapor and soot	Yes	Yes	Limited data on its environmental effects
Nitric acid	Any base, hydroxide, carbonate, bicarbonate	Boils off, while also giving off nitrogen dioxide fumes	Neutralize first	Neutralize first	Corrosive to organisms and rocks; its salts are excellent nitrogen source for plants
Nitric oxide	Sodium percarbonate solution	Not useful	Not possible	Not possible	Oxidizes to nitrogen dioxide in air, which is highly toxic and corrosive; creates acid rain
Nitrobenzene	Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid	Generates carbon oxides, water vapor, soot and nitrogen	DO NOT DUMP	DO NOT DUMP	Toxic to all wildlife
Nitrocellulose	Controlled incineration; Hydrolysis with aqueous alkali hydroxide	Breaks down to release combustion gasses and self-ignites at 160 °C	DO NOT DUMP	No; however it can be converted to fertilizer by adding aqueous ammonia	Breaks down in the presence of water to give nitric acid, which, after neutralization becomes source of nitrogen for plants
Nitroethane	Incineration	Burns giving off carbon oxides, water vapors and nitrogen gas	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife
Nitrogen dioxide	Bubbling through an alkali solution, peroxide solution	Not useful	Not possible	No	Reacts with air moisture to generate nitric acid and contributes to the acid rain; extremely toxic to animals and plants
Nitrogen trichloride	Photolysis; Hydrolysis with hot water; Reduction with sodium thiosulfate	Detonates	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic to wildlife
Nitrogen triiodide	Sodium thiosulfate solution	Detonation, giving off corrosive iodine vapors	DO NOT DUMP	DO NOT DUMP	The iodine vapors it gives off during decomposition are dangerous to organisms in short term
Nitroglycerin	Photolysis; Hydrolysis with cold sodium hydroxide solution	Violent detonation	DO NOT DUMP	DO NOT DUMP	Toxic to organisms; nitrate source for plants
Nitroguanidine	Not required, can be dumped in ground; Careful and controlled pyrolysis	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures	Possibly	Yes	Safe, nitrogen source for plants, used as fertilizer; Guanidine derivates occur in guano
Nitromethane	Incineration	Burns giving off carbon oxides, water vapors and nitrogen gas	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife
Nitronium perchlorate	Slow addition to water, followed by neutralization with dil. NaOH	Decomposes to release nitrogen/chlorine oxides and oxygen	DO NOT DUMP	DO NOT DUMP	Dangerous and very toxic to wildlife
Nitronium tetrafluoroborate	Slow addition to water, followed by neutralization with dil. NaOH	Decomposes to release NO₂F and BF₃	DO NOT DUMP	DO NOT DUMP	Dangerous and very toxic to wildlife
Nitrosonium tetrafluoroborate	Slow addition to water, followed by neutralization with dil. NaOH	Decomposes to release NOF and BF₃, in moist air forms acids	DO NOT DUMP	DO NOT DUMP	Dangerous and very toxic to wildlife
Nitrosyl chloride	Aqueous base; percarbonates can also be used to remove nitric oxide; multiple washings may be required	Decomposes, giving off nitrogen oxide and chlorine/HCl fumes	DO NOT DUMP	DO NOT DUMP	Highly corrosive and toxic to all organisms and materials
Nitrosylsulfuric acid	Careful addition to crushed ice, followed by neutralization with a diluted base	Decomposes releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Deadly and extremely corrosive to all organisms
Nitrourea	Diluted and hydrolyzed; Careful and controlled pyrolysis	Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures	Hydrolyze first	Hydrolyze first	May pose toxicity to fauna
Nitrous acid	Any base, hydroxide, carbonate, bicarbonate; percarbonates can also be used	Decomposes, giving off nitrogen oxide fumes	Neutralize first	Neutralize first	Corrosive to organisms and rocks; salts somewhat toxic to animals
Nitrous oxide	Gentle reduction with various reducing agents	Breaks down to nitrogen and oxygen at high temperatures	Not possible	Not possible	Low toxicity to wildlife, may induce light narcotic effects and laughing sensation in some organisms
Nonane	Incineration; Oxidation with Fenton's reagent	Ignites in air, gives off carbon dioxide and water vapors, soot	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life and organisms
Octane	Incineration; Oxidation with Fenton's reagent	Gives off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Toxic to aquatic life and organisms
Octyl acetate	Mixed with a more flammable solvent, followed by incineration	Gives off carbon oxides, water vapors and soot	Yes	Yes	Safe, occurs naturally in citrus fruit peels
Onchidal	Neutralization with an oxidizing mixture	Gives off carbon oxides, water vapors and soot	Neutralize first	Neutralize first	Highly toxic, occurs naturally
Orcein	Not required; can be poured down the drain	Gives off carbon oxides, water vapor and soot	Yes	Yes	Safe, occurs naturally
Orotic acid	Pyrolysis; diluted and poured down the drain	Decomposes on heating to release carbon oxides and various organic compounds	Yes, if diluted	Yes, if diluted	May pose a threat to wildlife in large amounts
Osmium tetroxide	Reduced with hydrogen or another reducing agent	Sublimes, releasing highly toxic fumes	DO NOT DUMP	DO NOT DUMP	Extremely toxic in short term
Oxalic acid	Neutralization with any oxide, hydroxide, carbonate, followed by pyrolysis	Releases carbon oxides and water vapor at high temperature	Yes, but dilute it first	No	Toxic to wildlife; Small amounts occur in some plants
Oxalyl chloride	Disolving it in large amounts of water, followed by neutralization with any oxide, hydroxide, carbonate	Sublimes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to wildlife and environment
Ozone	Any compound easily oxidizable that does not ignite, such as carbon monoxide, activated charcoal	Accelerates the decomposition of ozone, but not enough	Not possible	No	Dangerous to wildlife, may oxidize various gaseous compounds, contributing to the acid rain; In the upper atmosphere it acts as UV shield
p-Dimethylaminobenzalrhodanine	Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain	Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs	Yes, but not recommended	No, neutralize first	May be harmful to water bodies
Paper	Incineration; Dumping in trash	Will burn if ignited, releasing carbon oxides, water vapors and soot	Do not dump	Do not dump uncomposted	Excess paper is harmful for environment, unless composted first
Paraffin wax	Incineration; Dumping in trash	Will burn at high temperatures, releasing carbon oxides, water vapors and soot	Do not dump	Do not dump	Wax, both solid and molten, floats on water bodies and may inhibit the cellular breathing of many organisms
Pentaerythritol	Mixed with a flammable solvent and incinerated	Gives off carbon oxides, water vapors, aldehydes	Yes	Yes	Low toxicity to aquatic life; Classified as biodegradable^[8]
Pentaerythritol tetranitrate	Oxidation with Fenton's reagent; Mixed with a flammable solvent and incinerated; Reduction with powdered iron^[9]	Gives off carbon oxides, water vapors, soot	Yes, but not recommended	Yes	Displays relative low toxicity to aquatic life; PETN undergoes safe biodegradation
Pentane	Incineration	Flammable, releases carbon oxides, water vapor when burned in air	DO NOT DUMP	DO NOT DUMP	Dangerous to wildlife
Pentanoic acid	Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain; valeric salts can also be pyrolyzed in a kiln	Flammable (high concentrations, >86 °C), no dangerous combustion products, though the smoke will have a rancid smell	Yes, but recommended to neutralize first	Neutralize first	Safe, biodegradable; avoid dumping large amounts, dangerous to microfauna and water bodies
Pentanol	Mixed with a more flammable solvent and incinerated	Flammable, gives off carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic life in large concentrations
Peracetic acid	Dilution in water, followed by neutralization with a base; iron oxide can be added to decompose hydrogen peroxide; can be poured down the drain afterwards	May explode at high temperatures, at high concentrations	Do not dump	Do not dump	Toxic and corrosive to wildlife, both animals and plants
Perchloric acid	Neutralization with potassium, calcium bases, followed by reduction with metallic iron under UV light in the absence of air	May explode at high temperatures, at high concentrations	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, both animals and plants
Periodic acid	Neutralization with potassium, calcium bases, followed by reduction with a suitable reducing agent to iodide; thiosulfate added to remove any free iodine	Decomposes at high temperatures to iodine pentoxide which further decomposes above 300 °C to iodine and oxygen	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife, both animals and plants
Permanganic acid	Hydrogen peroxide; Caro's acid	Leads to decomposition, resulting in manganese dioxide slag	Do not dump	Do not dump	The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
Peroxydisulfuric acid	Any base, carbonate, bicarbonate	May explode if concentrated	Neutralize first	Neutralize first	Strong oxidizer, it is dangerous and toxic to small organisms
Peroxymonosulfuric acid	Any base, carbonate, bicarbonate	May explode if concentrated	Neutralize first	Neutralize first	Strong oxidizer, it is dangerous and toxic to small organisms
Petroleum	Controlled incineration	Burns in the presence of air, to give off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic environment
Petroleum ether	Incineration	Burns in the presence of air, to give off carbon dioxide and water vapors	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic environment
Phenanthroline	Oxidation with Fenton's reagent or piranha solution, followed by neutralization and poured down the drain	Gives off carbon oxides, water vapors, soot, VOCs, PAHs, nitrogen	DO NOT DUMP	DO NOT DUMP	Dangerous to environment, very toxic to aquatic life
Phenethyl alcohol	Mixed with a more flammable solvent and incinerated	Flammable if preheated, gives off carbon dioxide, soot and water vapors	DO NOT DUMP	DO NOT DUMP	Harmful for wildlife and aquatic life in large concentrations
Phenol	Incineration; Oxidation with Fenton's reagent	Gives off carbon oxides, water vapors, soot and VOCs	DO NOT DUMP	DO NOT DUMP	Dangerous to environment
Phenolphthalein	Incineration; Oxidation with Fenton's reagent	Gives off carbon oxides, water vapors, soot and VOCs	Dilute it with plenty of water before release	Not recommended	Dangerous to environment in large amounts
Phenylacetaldehyde	Not always required, may be strongly diluted and poured down the drain	Breaks down to carbon oxides, water vapors, soot; may give off aromatic vapors	Dilute first	Dilute first	Low toxicity, occurs naturally in plants
Phenylacetic acid	Not always required, may be strongly diluted and poured down the drain	Breaks down to carbon oxides, water vapors, soot; may give off aromatic vapors	Dilute first	Dilute first	Low toxicity, may occur naturally in small amounts
Phenylacetone	Excess bleach, excess NaOH	Breaks down releasing carbon dioxide, water vapors, soot, PAHs	Neutralize first	Neutralize first	Relative safe, poses low toxicity
Phenylacetylene	Oxidation with Fenton's reagent; Incineration, best done with an afterburner	Flammable, burns in air to release carbon oxides, water vapors, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife and very dangerous to aquatic life, as well as soil
Phloroglucinol	Mixed with a more flammable solvent and incinerated	Generates smoke, carbon dioxide and water vapors	Yes, but dilute it first	Yes, but dilute it first	Relative safe, biodegradable; Occurs naturally in small amounts
Phosgene	Alkaline metal hydroxide, ammonia	NO	DO NOT DUMP	DO NOT DUMP	Extremely toxic for all organisms
Phosphine	Bleach (best bet); hydrogen peroxide; oxygen; ozone;	May ignite in the presence of air	DO NOT DUMP	DO NOT DUMP	Extremely toxic for all organisms, used to kill pests
Phosphoric acid	Any metal oxide, hydroxide, carbonate	Not very useful	Yes, if it's diluted	Neutralize it first, good source of phosphorus, unless contaminated	Deadly to small animals; excess in water bodies may cause algal bloom
Phosphorus pentabromide	Suspension of calcium hydroxide, sodium thiosulfate, cooled; PBr₅ is added slowly to prevent splashing; Neutralization area must be well ventilated	Breaks down to bromine, hydrogen bromide, phosphorus tribromide and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phosphorus pentachloride	Suspension of calcium hydroxide, cooled; PCl₅ is added slowly to prevent splashing; Neutralization area must be well ventilated	Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phosphorus pentoxide‎‎	Alkaline solution, lots of water	Will volatilize at very high temperatures	No, reaction with water is highly exothermic and may generate acidic steam	Neutralize first	Corrosive and dangerous on direct contact with wildlife; Reaction with water will lead to phosphoric acid, highly corrosive and dangerous.
Phosphorus tribromide	Suspension of calcium hydroxide, sodium thiosulfate, cooled; PBr₃ is added slowly to prevent splashing; Neutralization area must be well ventilated	Boils and breaks down to bromine, hydrogen bromide and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phosphorus trichloride	Suspension of calcium hydroxide, sodium thiosulfate, cooled; PCl₃ is added slowly to prevent splashing; Neutralization area must be well ventilated	Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phosphorus triiodide	Sodium thiosulfate solution/suspension; PI₃ is added slowly to prevent splashing; Neutralization area must be well ventilated	Decomposes, releasing corrosive fumes	DO NOT DUMP!	DO NOT DUMP!	Very toxic and corrosive to organisms and rocks
Phosphoryl bromide	Suspension of calcium hydroxide, sodium thiosulfate, cooled; POBr₃ is added slowly to prevent splashing; Neutralization area must be well ventilated	Boils and breaks down to bromine, hydrogen bromide and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phosphoryl chloride	Suspension of calcium hydroxide, sodium thiosulfate, cooled; POCl₃ is added slowly to prevent splashing; Neutralization area must be well ventilated	Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture	DO NOT DUMP! Neutralize it first	DO NOT DUMP! Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Phthalic anhydride	Oxidation with oxidizing solutions, such as chromic acid, Fenton's reagent, piranha solution	Gives off carbon oxides, water vapors, soot and VOCs	Dilute it with plenty of water before release	Not recommended	Dangerous to environment in large amounts
Picramic acid	Oxidation with Fenton's reagent	Gives off carbon dioxide, water vapors, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Very toxic to environment
Picric acid	Hydrolysis with aqueous sodium hydroxide; oxidation with Fenton's reagent; Containers with dry picric acid should be taken by professionals and safely detonated in a remote location	Gives off carbon dioxide, water vapors, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Very toxic to environment
PLX	Strongly diluted with a flammable solvent and safely incinerated	Gives off carbon dioxide, water vapors, may explode if impurities present	DO NOT DUMP	DO NOT DUMP	Very harmful to environment
Polystyrene	Incineration; Dumping in trash	Will burn at high temperatures, releasing carbon oxides, water vapors and soot	DO NOT DUMP	DO NOT DUMP	Harmful for the environment
Polytetrafluoroethylene	Not required; Can simply be dumped in trash	Generates toxic fluorine, hydrogen fluoride, fluorocarbons and carbon oxide vapors	DO NOT DUMP	DO NOT DUMP	Resistant to most corrosive chemicals, cannot be digested by wildlife
Portland cement	Hydration, followed by recycling, dumping in trash, ground, etc.	Not useful	DO NOT DUMP	DO NOT DUMP	Non-hydrated cement is hazardous to environment, animals and plants; hydrated solid is generally non-toxic; Production of cement is extremely harmful to environment
Potassium antimony tartrate	Pyrolysis, followed by taking the resulting slag to disposal facilities	Gives off carbon oxides and water vapors, leaving potassium antimony oxide slag behind	Do not dump	Do not dump	Hazardous to wildlife
Potassium azide	Acidified sodium nitrite, nitrous acid	Detonates and gives off nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Potassium bicarbonate	Any acid will do	Above 292 °C decomposes to potassium carbonate and above 891 °C will yield potassium oxide and carbon dioxide, which is quickly reabsorbed as it cools	Yes	OH YES	Excess may increase the concentration of potassium in the dumping area
Potassium bismuthate	Hydrolysis; neutralization with hydrogen peroxide	Breaks down to its constituent oxides, both dry and as solution	Do not dump	Do not dump	Dangerous to organisms due to its strong oxidizing properties; high amounts of bismuth are toxic
Potassium bisulfate	Any base, carbonate, bicarbonate	Decomposes to high temperatures releasing water vapors and sulfur trioxide	Yes	Neutralize first	Decreases the soil pH, high levels of sodium are toxic for plants
Potassium bisulfite	Bleach or hydrogen peroxide can be used if desired	Decomposes to release sulfur dioxide and water vapors	Yes	Yes, but not recommended	High levels of sulfur dioxide are toxic for organisms
Potassium bitartrate	Not required; can be disposed in anyway	Decomposes, releasing combustion gasses, carbon oxides, water vapors	Yes	Yes	Safe, low toxicity; occurs during wine fermentation
Potassium bromate	Reduction with thiosulfate	Decomposes to potassium bromide and oxygen	Neutralize first	No	Toxic to plants, suspected carcinogen
Potassium bromide	Not required	May give off bromine vapors in the presence of water at high temperatures	Yes	Yes	Bromide ions pose little toxicity to wildlife in small amounts
Potassium carbonate	Any acid will do	No, very high temperatures decompose it to potassium oxide and carbon dioxide, which is quickly reabsorbed as it cools	Yes	OH YES	Excess may increase the soil level of potassium in the dumping area
Potassium chlorate	Reduction with metabisulfite, sulfite or bisulfite; a mixture of sulfuric acid and ferric ammonium sulfate can also be used	Melts and disproportionates to potassium perchlorate and potassium chloride	Small amounts can be dumped, as household bleach already contains a small percentage of chlorates, especially if it's old; Do not dump large quantities	No	Toxic to plants, was used as a weedkiller in the past
Potassium chloride	Not required	Melts, not useful	Yes	Yes, unless the soil is chloride sensitive	Presence of chlorides may have a harmful effect to some plants
Potassium chlorochromate	Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH	Decomposes above 290 °C, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) is a potent carcinogen and very toxic to organisms
Potassium chromate	Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH	Decomposes above 1000 °C, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are powerful carcinogens and very toxic to organisms
Potassium cyanide	Oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas	Melts and may oxidize in oxygen-rich atmosphere	DO NOT DUMP	DO NOT DUMP	Highly toxic for all wildlife
Potassium dichromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH	Breaks down, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Potassium ferrate	Any acid, hot water	Breaks down to iron(III) oxide and potassium hydroxide, best in the presence of moisture	Yes, but recommended to neutralize first	Yes, but recommended to neutralize first	Dangerous to wildlife in short term
Potassium ferricyanide	Not required for small amounts, dumped in trash	Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide	Yes, but small amounts	Yes, but small amounts	Low toxicity to organisms, though tends to break down under UV light
Potassium ferrocyanide	Not required for small amounts, dumped in trash	Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide	Yes, but small amounts	Yes, but small amounts	Low toxicity to organisms
Potassium hexachlorostannate	Precipitate to SnO₂	Melts	Dilute it first	Dilute it first	Unknown environmental effects
Potassium hydrogen phthalate	Oxidation with oxidizing solutions, such as chromic acid, Fenton's reagent, piranha solution	Gives off carbon oxides, water vapors, soot and VOCs	Dilute it with plenty of water before release	Yes, but not recommended	Dangerous to environment in large amounts
Potassium hydroxide	Any acid, carbon dioxide	Not useful	Yes	Neutralize first; neutralized is a good source of potassium for plants	Dangerous to wildlife in short term
Potassium hypochlorite	Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide	Disproportionates to potassium chlorate and potassium chloride, giving off chlorine	Yes	DO NOT DUMP	Very toxic to organisms, especially aquatic ones
Potassium iodate	Reduction to potassium iodide; recycling	Decomposes, releasing oxygen, and iodine at high enough temperatures	DO NOT DUMP	DO NOT DUMP	Potassium iodate may be harmful to organisms
Potassium iodide	Not required	May release iodine vapors in the presence of water	Yes	Yes	Low toxicity to wildlife
Potassium manganate	Any reducing agents, such as oxalic acid, hydrogen peroxide	Breaks down to manganese oxide and alkali	DO NOT DUMP	DO NOT DUMP	Deadly to small organisms, dangerous to organisms in short term
Potassium metabisulfite	Bleach	Breaks down to release sulfur oxides	Yes	Yes	Dangerous to small organisms
Potassium nitrate	Not required	Gives off nitrogen oxides at very high temperatures; burns in presence of organic compounds, releasing carbon oxides, nitrogen and leaving behind alkaline slag	Yes	OH YES	Excellent fertilizer, though may lead to uncontrolled algae growth if dumped in water bodies
Potassium nitrite	Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to potassium carbonate or sulfate	Decomposes to form potassium oxide/hydroxide and releases nitrogen oxides fumes	Yes, but not recommended unless diluted	Do not dump	Unlike nitrates, nitrites are poor source of nitrogen for plants; Nitrites are toxic for most animals due to the formation of nitrosamines
Potassium perchlorate	Reduction with metallic iron under UV light in the absence of air	Oxidizes flammable materials, burning them	Do not dump	Do not dump	Hazardous to aquatic life
Potassium periodate	Reduction to potassium iodide; recycling	Decomposes, releasing oxygen, and iodine at high enough temperatures	DO NOT DUMP	DO NOT DUMP	Potassium periodate may be harmful to organisms
Potassium permanganate	Hydrogen peroxide	Decomposes to manganese dioxide at high temperatures	DO NOT DUMP	DO NOT DUMP	The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
Potassium peroxochromate	Potassium/sodium sulfite/metabisulfite/thiosulfate, ascorbic acid at acidic pH	Detonates, releasing potassium chromate, chromium(III) oxide fumes	DO NOT DUMP	DO NOT DUMP	Cr(VI) is harmful for the environment
Potassium peroxymonosulfate	Alkaline solution, sodium carbonate in water	Decomposes, releasing oxygen	Recommended be neutralized first	Must be neutralized first	Dangerous to the environment in short term
Potassium persulfate	Pyrolysis, various reducing agents	Decomposes	Do not dump	Do not dump	Strong oxidizer, toxic for wildlife
Potassium rhodizonate	Not always required; can be dumped in trash or poured down the drain	Releases carbon oxides, soot and leaves behind potassium carbonate	Yes	Yes	Safe, low toxicity
Potassium sodium tartrate	Not always required; can be disposed in anyway	Releases combustion gasses and leaves behind sodium and potassium carbonate	Yes	Yes	Safe, low toxicity
Potassium sorbate	Not required; can be poured down the drain or dumped in trash	Will decompose at high temperatures to release various hydrocarbons, carbon oxides, water vapors	Yes	Yes	Large quantities may be harmful to water bodies and small animals
Potassium sulfate	Not required	Releases sulfur oxides at very high temperatures	Yes	OH YES	Safe, good potassium source for plants
Potassium sulfite	Not required, simply pour down the drain; Bleach or hydrogen peroxide can be used if desired	Decomposes to release sulfur dioxide	Yes	Yes, but not recommended	Oxidation of aqueous potassium sulfite to sulfate reduces the amount of dissolved oxygen from water bodies
Potassium tert-butoxide	Dissolution in large amounts of water; poured down the drain	Decomposes to release carbon oxides, leaving behind basic potash	Strongly dilute it first	Strongly dilute it first	tert-Butanol has low environmental impact
Propane	Incineration	Burns in the presence of oxygen	Not possible	Not possible	Contributes to the greenhouse effect
Propanol	Incineration	Flammable, gives off carbon dioxide and water vapor	DO NOT DUMP	DO NOT DUMP	Dangerous for wildlife and aquatic life
Propionaldehyde	Incineration; Sodium hydroxide	Generates carbon oxides and water vapors; some will evaporate when heated	DO NOT DUMP	DO NOT DUMP	Toxic and harmful to the wildlife
Propionic acid	Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain	Flammable (high concentrations), no dangerous combustion products, though the smoke will have a rancid smell	Yes, but recommended to neutralize first	Neutralize first	Safe, biodegradable; avoid dumping large amounts, kills microbial lifeform
Propionic anhydride	Diluted solution of NaOH or KOH	Flammable, no dangerous combustion products	Yes	Yes	Biodegradable; avoid dumping large amounts, acidifies soil
Propylene carbonate	Incineration, first mix it with a more flammable solvent	Burns in the presence of oxygen	Yes	Yes	Low toxicity to organisms
Propylene glycol	Not required, though it can be mixed with a flammable solvent and burned	Generates carbon oxides and water vapor, as well as other toxic pyrolysis compounds	Yes	Yes	Little toxic effect on aquatic wildlife
Propylene glycol dinitrate	Photolysis; Hydrolysis with cold sodium hydroxide solution	Violent detonation	DO NOT DUMP	DO NOT DUMP	Toxic to organisms; nitrate source for plants
Propylene oxide	Incineration; Hydrolysis	Burns, giving off combustion gases	DO NOT DUMP	DO NOT DUMP	Toxic and dangerous for all wildlife
Prussian blue	Hydrogen peroxide, bleach	May give off carbon oxides and nitrogen gasses at high temperatures, as well as cyanide	Yes	Yes	Contact with strong acids may release hydrogen cyanide
Pumice	Not required; dump it in trash; mix it with concrete	Not useful	Yes (powder or fine grains only, with plenty of water)	Yes	Low toxicity to organisms
Purple acid	Dilution in water followed by addition of NaOH solution	Decomposes to sulfuric acid, NOx	Do not dump	Do not dump	Corrosive and toxic
Pyranine	Not always required	Breaks down to combustion gasses and soot	Yes	Yes	Low toxicity to organisms
Pyridine	Incineration in a special incinerator; Oxidation with Fenton's reagent	Gives off carbon oxides, water vapors, soot, amines and nitrogen	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Pyruvic acid	Any base, carbonate, bicarbonate, alkaline-earth oxide	Gives off carbon dioxide, water vapors and other side products	Yes	Yes	Safe, can be used as nourishment by organisms; Important role in Krebs cycle
Quinine	Dumped in trash, poured down the drain	Decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives	Yes	Yes	Low toxicity, though harmful for microorganisms
Quinoline	Incineration; Oxidation with Fenton's reagent	Gives off carbon oxides, water vapors, soot, amines and nitrogen	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Raney nickel	Dissolved in acid, followed by recovery of nickel and aluminium Taken to hazardous waste disposal centers	Melts at 1455 °C	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
RDX	Incineration, done outside; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Displays moderate toxicity to aquatic life; RDX can be degraded by the fungus Phanaerocheate chrysosporium
Resiniferatoxin	Not required at low concentrations; high concentrations may require an oxidizer, like bleach	Generates irritant smoke, carbon dioxide, soot and water vapor	Yes	Yes	Harmful for mammals at high concentrations, otherwise relative safe, biodegradable; Occurs naturally
Resorcinol	Mixed with a more flammable solvent and incinerated	Generates smoke, carbon dioxide and water vapors	Yes, but dilute it first	Yes, but dilute it first	Relative safe, biodegradable; Occurs naturally in small amounts
Rhodamine B	Not always required, any method will do	Decomposes, releases combustion gasses, POCs and VOCs	Yes	Yes	Unknown effects, doesn't appear to be harmful
Ribitol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity
Ricinoleic acid	Incineration; Not always required	Gives off carbon dioxide and water vapors	Yes	Yes	Low toxicity to environment in small amounts
Rose's metal	Recycling; Wastes should be taken to hazardous metal disposal centers	Melts at 95 °C	DO NOT DUMP	DO NOT DUMP	While bismuth and tin don't present great hazard to environment, lead does
Rosocyanine	Not required	Breaks down to carbon oxides and water vapors	Yes	Yes	Low toxicity to organisms
Rubber	Recycling; Taken to waste disposal centers; Dumped in trash	Decomposes and ignites, releasing large amounts of black smoke, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Natural rubber has low toxicity and is biodegradable; Synthetic and vulcanized rubber do not easily break down in the environment and are harmful for nature
Rubidium azide	Acidified sodium nitrite, nitrous acid; recycling of rubidium	Detonates and gives off nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Rubidium chloride	Recycling; Taken to waste disposal centers	Not useful in any way	Yes, though best to recycle it	Yes	Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
Rubidium hydroxide	Neutralization with any acid, carbon dioxide; recycling;	Not useful; highly corrosive when hot to glass, most common metals	Yes, though best to recycle it	Yes, though best to recycle it	Dangerous to wildlife in short term (highly corrosive); Rubidium ions have similar toxicity to those of sodium and potassium
Rubidium nitrate	Recycling; Taken to waste disposal centers	Decomposes to rubidium nitrite above ~300 °C	Yes, though best to recycle it	Yes, though best to recycle it	Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
Rubidium nitrite	Recycling; Taken to waste disposal centers	Decomposes above 450 °C	Yes, though best to recycle it	Yes, though best to recycle it	Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
Safrole	Incineration; Not always required	Breaks down to combustion gasses, soot	Yes	Yes	Low toxicity to wildlife, occurs naturally
Salicylic acid	Not always required	Breaks down to phenol; at higher temperatures gives off carbon oxides, water vapors, soot and VOCs	Yes	Yes	Low toxicity to environment, occurs naturally
Schweizer's reagent	Any acid	Breaks down to copper(I) oxide, gives off water vapors and ammonia	DO NOT DUMP	DO NOT DUMP	Copper ions and ammonia are toxic to most animals, especially small ones; ammonia can be a source of nitrogen for plants
Scopolamine	Hydrolyzed and diluted; Can be destroyed using a strong oxidizing mixture for complete neutralization	At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot	Not recommended	Dilute first	Harmful and toxic to animals; occurs naturally
sec-Butanol	Incineration, if no peroxides present; If peroxides are present, neutralize them with a reducing agent such as ferrous sulfate, sodium bisulfite or metabisulfite in excess, then incinerate; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Will burn to release carbon dioxide and water vapors	Do not dump	Do not dump	Poses toxicity to wildlife, water bodies
Silicon carbide	Not required	Surface oxidation at high temperatures in oxygen; decomposes at its melting point	Not recommended, may clog the plumbing	Yes	Inert, safe for the environment
Silicon dioxide	Not required	At high temperatures results in melting; Can be used to indurate crystalline silica	Not recommended, may clog the plumbing	Yes	Finely divided silica is dangerous for fauna
Silver acetate	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver, water and carbon dioxide at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver acetylide	Addition of water, followed by careful addition of acid	Detonates	DO NOT DUMP!	DO NOT DUMP!	Silver particles may be harmful for wildlife
Silver azide	Nitrous acid, ammonium acetate, sodium dichromate	Detonates, releasing silver particles and nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Silver bromide	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver and bromine at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver carbonate	Photolysis; Reduction with a reducing agent like ascorbic acid or formaldehyde; Recycling of silver	Breaks down to metallic silver, oxygen and carbon dioxide above 120 °C	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; silver microparticles are harmful if ingested
Silver chlorate	Treatment with aq. NaOH to yield silver oxide, which is recycled; chlorate reduced to chloride with a reducing agent	Decomposes if heated gently, detonates otherwise	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested; chlorates are harmful for organisms
Silver chloride	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver and chlorine at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver(I) fluoride	Reduction with a reducing agent like ascorbic acid or formaldehyde; Recycling of silver	Melts above 435 °C	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver formate	Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible	Explodes, releasing carbon dioxide and silver powder	DO NOT DUMP	DO NOT DUMP	Potentially harmful to wildlife in short term; silver microparticles are harmful if ingested
Silver fulminate	Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible	Explodes, releasing oxygen, nitrogen, carbon oxides and silver powder	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; silver microparticles are harmful if ingested
Silver iodide	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Melts and breaks down to metallic silver and iodine at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver nitrate	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver, oxygen and nitrogen dioxide at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; silver microparticles are harmful if ingested
Silver nitrite	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver, oxygen and nitrogen oxides at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; silver microparticles are harmful if ingested
Silver oxalate	Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible	Explodes, releasing carbon dioxide and silver powder	DO NOT DUMP	DO NOT DUMP	Potentially harmful to wildlife in short term; silver microparticles are harmful if ingested
Silver oxide	Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver and oxygen at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Silver perchlorate	Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver, silver chloride, oxygen, chlorine at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife in short term; silver microparticles are harmful if ingested
Silver permanganate	Reduction in aq. solution to silver metal and manganese oxide using a reducing agent, like ascorbic acid	Decomposes to silver and manganese dioxide, may explode at high temperatures	DO NOT DUMP	DO NOT DUMP	Manganese dioxide is toxic if ingested; silver particles may cause argyria
Silver sulfate	Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver	Breaks down to metallic silver, oxygen and/or sulfur dioxide/trioxide at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife; silver microparticles are harmful if ingested
Slag	Unnecessary	Not useful, already byproduct of high-temperature reactions	DO NOT DUMP	DO NOT DUMP	Slag is harmful for environment, especially if heavy metals are present
Smokeless powder	Controlled incineration; dumping in soil	Ignites	Not recommended	Yes, but in low amounts	Somewhat good as a fertilizer, though expensive; Acts as a slow-release nitrogen source for plants
Soap	Poured down the drain	Decomposes and burns at high temperatures, releasing lots of soot, carbon dioxide and water vapors	Yes	Not recommended	High levels of sodium are toxic for plants; anionic surfactants are harmful for environment
Sodium acetate	Not always required	Results in sodium carbonate and acetone at high temperatures, then carbon dioxide and water vapors	Yes	Not recommended	High levels of sodium are toxic for plants
Sodium acetylsalicylate	Pyrolysis; Not always required	Gives off carbon dioxide, water vapors and soot	Yes	Not recommended	Sodium is toxic for plants
Sodium aluminium hydride	Neutralization with an alkali or carbonate solution; adding the compound in small bits in large volumes of water and alcohol	Decomposes to release hydrogen	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, will increase the aluminium concentration in soil or water
Sodium amide	Cooled alcoholic solution with small amounts of a weak acid; addition of amide in small amounts	Ignites in air	DO NOT DUMP	DO NOT DUMP	Extremely harmful to environment in short term
Sodium azide	Sodium nitrite, nitrous acid	Breaks down to sodium metal and gives off nitrogen gas	DO NOT DUMP	DO NOT DUMP	Very toxic for wildlife
Sodium benzoate	Not always required	May give off benzene vapors	Yes	Yes, but not in large quantities	Too much sodium is harmful to plants; Reaction with certain compounds may release traces of benzene; otherwise safe, occurs naturally
Sodium bicarbonate	Any acid or base; not generally required	Converts to sodium carbonate	Yes	No	High levels of sodium are toxic for plants
Sodium bismuthate	Hydrolysis; neutralization with hydrogen peroxide	Breaks down to its constituent oxides, both dry and as solution	Do not dump	Do not dump	Dangerous to organisms due to its strong oxidizing properties; high amounts of bismuth are toxic
Sodium bisulfate	Any base, carbonate, bicarbonate	Not useful	Yes	Do not dump	Decreases the soil pH, high levels of sodium are toxic for plants
Sodium bisulfite	Not required; Bleach or hydrogen peroxide can be used if desired	Decomposes to release sulfur dioxide	Yes	Yes, but not recommended	High levels of sodium are toxic for plants
Sodium borohydride	Neutralization with an alkali or carbonate solution; Slow addition in a large volume of water or alcohol	Decomposes to release hydrogen	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, will increase the boron concentration in soil or water
Sodium bromate	Reduction with thiosulfate	Decomposes to sodium bromide and oxygen	Neutralize first	No	Toxic to plants, suspected carcinogen
Sodium bromide	Not required	May give off bromine vapors in the presence of water at high temperatures	Yes	Yes	Bromide ions pose little toxicity to wildlife in small amounts
Sodium carbonate	Any acid; Not generally required	Not useful	Yes	No	High levels of sodium are toxic for plants
Sodium chlorate	Reduction with metabisulfite, sulfite or bisulfite; a mixture of sulfuric acid and ferric ammonium sulfate can also be used	Melts and disproportionates to sodium perchlorate and sodium chloride	Small amounts can be dumped, as household bleach already contains a small percentage of chlorates, especially if it's old; Do not dump large quantities though	No	Toxic to plants, was used as a weedkiller in the past
Sodium chloride	Not required	Not useful	Yes	No	High levels of sodium are toxic for plants
Sodium chlorite	Reduction with metabisulfite, sulfite or bisulfite	Melts and decomposes	Small amounts can be dumped; Do not dump large quantities though	Do not dump	Toxic to plants, animals, biocide
Sodium chlorosulfonate	Slow and careful addition to crushed ice; addition of a base to neutralize the acid	Decomposes releasing sulfur trioxide and chlorine	DO NOT DUMP	DO NOT DUMP	Highly corrosive, toxic; excess sodium harmful for plants
Sodium chromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH	Breaks down, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Sodium cyanide	Oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas	Melts and may oxidize in oxygen-rich atmosphere	DO NOT DUMP	DO NOT DUMP	Highly toxic for all wildlife
Sodium cyanoborohydride	Neutralization of cyanide; Slow decomposition in a large volume of water or alcohol	Decomposes to release HCN, hydrogen	DO NOT DUMP	DO NOT DUMP	Cyanide is toxic to organisms, will increase the boron concentration in soil or water
Sodium dichromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH	Breaks down, releasing oxygen	DO NOT DUMP	DO NOT DUMP	Cr(VI) ions are carcinogenic and very toxic to organisms
Sodium dithionite	Dilution in water, followed by bleach or hydrogen peroxide	Breaks down to sodium sulfate, sodium sulfite, sodium thiosulfate, sulfur dioxide	DO NOT DUMP	DO NOT DUMP	Oxidation may ignite flammable materials
Sodium dodecyl sulfate	Mixed with a flammable solvent and incinerated; Poured down the drain	Gives off carbon oxides, water vapors, sulfur oxides	Yes	Yes	Low environmental impact
Sodium ethoxide	Slow addition to a large volume of water, best with small amounts of a carboxylic acid, such as acetic or citric acid	Breaks down to release flammable gasses	DO NOT DUMP	DO NOT DUMP	Toxic and very corrosive to most organisms; Raises pH in water bodies High levels of sodium are toxic for plants
Sodium ferrate	Diluted organic solutions will reduce it to its constituent oxides	Breaks down to its constituent oxides, both dry and as solution	Yes	Not recommended due to its sodium content	Dangerous to organisms due to its strong oxidizing properties
Sodium fluoride	Precipitate to calcium fluoride	Not useful	Do not dump	Do not dump	Dangerous to organisms, poisonous
Sodium formate	Pyrolysis, best done in a kiln	Decomposes to sodium oxalate, then carbonate, releasing carbon monoxide and water vapors	Yes	Not recommended due to its sodium content	High levels of sodium are toxic to plants
Sodium hexafluoroaluminate	Not required	Breaks down at high temperatures releasing aluminium fluoride, HF fumes	Not recommended	Yes	Relative safe to environment, harmful for insects and small animals; occurs naturally
Sodium hexametaphosphate	Not required; can be dumped in trash	Breaks down to sodium polyphosphates and sodium oxide, giving off phosphorus oxide fumes at high temperatures	Yes	No	High levels of sodium are toxic for plants
Sodium hydrazide	Slow addition of ice cold alcohol, the compound must be kept under chilled ether	Detonates in contact with air	DO NOT DUMP!	DO NOT DUMP!	Explosive, flammable, hydrazide is extremely hazardous for the environment
Sodium hydride	Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; best performed in an open area	Decomposes to release hydrogen at very high temperatures	DO NOT DUMP	DO NOT DUMP	Corrosive to organisms, harmful to wildlife
Sodium hydroxide	Any acid, carbon dioxide	Not useful	Yes	Do not dump	Dangerous to wildlife in short term; toxic to plants due to sodium ions
Sodium hypochlorite	Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide	Disproportionates to sodium chlorate and sodium chloride, giving off chlorine	Yes	DO NOT DUMP	Very toxic to organisms, especially aquatic ones; High levels of sodium are toxic for plants
Sodium hypophosphite	Diluted cooled hydrogen peroxide solution	Decomposes to disodium phosphate and phosphine	DO NOT DUMP	DO NOT DUMP	Harmful to organisms, especially aquatic ones
Sodium iodide	Not required	May release iodine vapors in the presence of water	Yes	Yes	Low toxicity to wildlife
Sodium metabisulfite	Bleach	Breaks down to release sulfur oxides	Yes	No	Toxic to most fauna; High levels of sodium are toxic for plants
Sodium methoxide	Dissolution in a large volume of water slowly, best with small amounts of a carboxylic acid, such as acetic acid	Breaks down to release flammable gasses	DO NOT DUMP	DO NOT DUMP	Toxic and very corrosive to most organisms; Raises pH in water bodies High levels of sodium are toxic for plants
Sodium methyl sulfate	Addition in large amounts of water, followed by addition of aq. alkali	Decomposes to dimethyl sulfate, DO NOT	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic
Sodium molybdate	Not required	Decomposes to molybdenum oxides and sodium hydroxide/oxide	Yes, but dilute first	Yes, but dilute first	Used as fertilizer
Sodium nitrate	Not always required; Ammonium sulfate	Not useful; may convert to sodium nitrite	Yes	No	While it is a good source of nitrogen for plants, high levels of sodium are generally undesired in soils
Sodium nitrite	Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to sodium carbonate or sulfate	Decomposes to form sodium oxide/hydroxide and releases nitrogen oxides fumes	Yes, but not recommended	No	Unlike nitrates, nitrites are poor source of nitrogen for plants; High levels of sodium are generally undesired in soils; Nitrites are toxic for most animals
Sodium nitroprusside	Not required for small amounts, dumped in trash. Bleach can be used to neutralize the compound	Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide	Yes, but small amounts	Yes, but small amounts	Low toxicity to organisms
Sodium orotate	Pyrolysis; diluted and poured down the drain	Decomposes on heating to release carbon oxides and various organic compounds	Yes, if diluted	Yes, if diluted	May pose a threat to wildlife in large amounts due to its sodium content
Sodium oxalate	Pyrolysis; poured down the drain	Decomposes on heating to release carbon monoxide	Yes, if diluted	Yes, if diluted	May pose a threat to wildlife in large amounts since it's a sodium salt; Occurs naturally as mineral
Sodium oxide	Slow addition to diluted solution of phosphoric acid	Not useful	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic for wildlife
Sodium perborate	A reducing agent like sodium thiosulfate or sulfite; Generally not required though	Decomposes to release water vapors and oxygen, leaving behind sodium borate	Yes	No	Hydrogen peroxide in harmful for organisms; High levels of sodium and boron are toxic for plants
Sodium percarbonate	Any acid; Iron(III) oxide or manganese dioxide can also be added for complete neutralization; Generally not required though	Decomposes to release water vapors and oxygen, leaving behind sodium carbonate	Yes	No	Hydrogen peroxide in harmful for organisms; High levels of sodium are toxic for plants
Sodium perchlorate	Reduction with metallic iron under UV light in the absence of air	Burns in a mixture with flammable materials	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Sodium permanganate	Hydrogen peroxide	Decomposes to manganese dioxide and sodium oxide/hydroxide at high temperatures	DO NOT DUMP	DO NOT DUMP	The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
Sodium peroxide	Any acid and manganese dioxide	Not useful	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic for wildlife
Sodium persulfate	Pyrolysis, various reducing agents	Decomposes	Neutralize first	Neutralize first	Strong oxidizer, harmful for wildlife
Sodium pyrosulfate	Hydrolyzes in water to sulfuric acid; addition of a base to neutralize the acid	Decomposes releasing sulfur trioxide	Dilute first	Dilute first	Oxidizer, harmful; excess sodium harmful for plants
Sodium silicate	Any acid	Not useful	Not recommended	Only in places without plant or animal life (construction sites, quarries, etc.)	Sodium ions are toxic to plant roots
Sodium sulfate	Not required	Not useful	Yes	No	High levels of sodium are toxic for plants
Sodium sulfide	Hydrogen peroxide, bleach	May give off hydrogen sulfide in the presence of water at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Sodium sulfite	Not required; Bleach can be used if desired	Decomposes to release sulfur dioxide	Yes	Yes, but not recommended	High levels of sodium are toxic for plants
Sodium thiosulfate	Bleach	Gives off sulfur oxide gasses	Yes	Yes, but not in large quantities	Breaks down rapidly in the environment due to air and microorganisms, yielding sulfides and sulfates.
Sodium triacetoxyborohydride	Slow decomposition in a large volume of water or alcohol	Decomposes to release acetic acid, hydrogen	DO NOT DUMP	DO NOT DUMP	Harmful, will increase the boron concentration in soil or water
Solochrome cyanine R	Not required	Decomposes	Dilute it first	Dilute it first	Unknown effects on the environemnt
Sorbic acid	Not needed	Melts; Decomposes releasing carbon dioxide and water vapor at high temperatures	Yes	Yes	Safe, nourishment for organisms, though harmful for bacteria
Sorbitol	Not required	Melts; Releases carbon dioxide and water vapor at high temperatures	Yes	Yes	Cannot be digested by most organisms, but has no dangerous effects on wildlife
Stainless steel	Recycling; Traces of stainless steel waste don't require chemical neutralization as SS is sufficiently inert that it can't do any significant damage to the environment. If magnetic, a magnet can be used to scoop all the pieces	Not useful; melts above 1500 °C	DO NOT DUMP	DO NOT DUMP	Stainless steel alloys contain chromium which will slowly leak in the environment and may increase the level of chromium in the environment; Some SS alloys may have nickel which is harmful to the environment
Starch	Any disposal method	Decomposes to release carbon oxides, water vapors	Yes	Yes	Safe, biodegradable; Nourishment for almost all organisms
Steel	Recycling; Steel waste don't require chemical neutralization as it's mostly iron which has low environmental impact. Since it's magnetic, a magnet can be used to scoop all steel leftovers	Not useful; melts above 1300 °C	DO NOT DUMP	DO NOT DUMP	Some steel alloys contain nickel which will leak in the environment which is harmful to the environment
Strontium carbonate	Any acid; Not required; Can be safely dumped in trash	Breaks down to strontium oxide and carbon dioxide at high temperatures; reverts as it cools	Yes	Yes	Strontium has little effect on environment
Strontium chloride	Not required; Any soluble carbonate or sulfate	Not useful; May release some HCl fumes if wet	Yes	Yes	Chloride ions may be harmful to plants
Strontium nitrate	Not required; May be converted to strontium sulfate or just dumped in soil	Breaks down to strontium oxide, oxygen and nitrogen dioxide at high temperatures	Yes	Yes	Strontium has little effect on environment
Strontium oxide	Lots of water; any diluted acid	Not useful	Neutralize first	Neutralize first	Will burn grass on contact; strontium has little effect on environment
Strontium sulfate	Not required	Decomposes to strontium oxide at very high temperatures	Yes, with lots and lots of water	Yes	Low environmental impact, occurs naturally
Strychnine	Destruction with a strong oxidizer, like conc. bleach; May not be required for small amounts	Decomposes releasing carbon oxides, nitrogen gas, water vapors and soot	Yes, small amounts, strongly diluted	Yes, small amounts, strongly diluted	Extremely toxic to small animals; occurs naturally
Styphnic acid	Careful and controlled destruction using an oxidizing solution; bubbling chlorine in a dil. acidified solution	May explode	DO NOT DUMP	DO NOT DUMP	Extremely toxic to all organisms; metal salts are sensitive explosives
Styrene	Oxidation with Fenton's reagent; Incineration with afterburner incinerators	Generates dangerous combustion products	DO NOT DUMP	DO NOT DUMP	Avoid releasing in environment, toxic, carcinogen
Succinic acid	Not always required, can be dumped in trash	Decomposes releasing acrid smoke, carbon oxides, water vapors and soot	Yes	Yes	Source of food for some organisms
Succinonitrile	Careful addition to bleach; Dissolved in a flammable solvent and incinerated	Decomposes releasing cyanide	DO NOT DUMP	DO NOT DUMP	Degradation releases free cyanide, which is extremely toxic to organisms
Sucrose	Not always required	Turns into caramel if gently heated and soot at high temperatures	Yes	Yes	Source of food for many small animals
Sulfamic acid	Aqueous solution of NaOH, slow addition; poured down the drain after neutralization	Above 205 °C decomposes to water, sulfur trioxide, sulfur dioxide and nitrogen	Yes, though preferably neutralized first	DO NOT DUMP	Harmful and corrosive for environment
Sulfanilamide	Not required, small amounts can be poured down the drain or trash	Decomposes releasing carbon and sulfur oxides, nitrogen gas and soot	Yes, small amounts	Do not dump	Toxic to microbial life and harmful to aquatic bodies
Sulfanilic acid	Neutralization with a base; Destruction with an oxidizing agent, may not be required for small amounts	Decomposes releasing carbon and sulfur oxides, nitrogen gas and soot	Yes, small amounts	Do not dump	Harmful to organisms and aquatic bodies
Sulfolane	Mixed with a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent if it has too much water	Results in carbon oxides, water vapors and sulfur dioxide	DO NOT DUMP	DO NOT DUMP	Environmental effects unclear
Sulfur dichloride	Any base, carbonate, bicarbonate, best as aqueous solution/suspension	Boils off	DO NOT DUMP	DO NOT DUMP	Extremely corrosive and toxic to all organisms
Sulfur dioxide	Any base, bleach (solution); hydrogen sulfide, ammonia (gaseous)	Not useful	Not possible (gas)	Not possible (gas)	Contributes to acid rain
Sulfur trioxide	Dry calcium carbonate; ammonia	Not useful	DO NOT DUMP	DO NOT DUMP	Deadly and extremely corrosive to all life; contact with moist air produces sulfuric acid mist; contributes to acid rain
Sulfur hexafluoride	Not required	May lead to sulfur dioxides and fluorine at very high temperatures	Not possible	Yes	Strong greenhouse effect
Sulfuric acid	Any base, carbonate, bicarbonate;	Not useful	Only if it's followed by large amounts of water; Though best to neutralize it first	DO NOT DUMP	Corrosive and deadly to wildlife; Lowers soil pH; Corrosive to rocks
Sulfuryl chloride	Any base, carbonate, bicarbonate;	Not useful	Neutralize it first	Neutralize it first	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Tagatose	Not required; can be disposed in any way	Will decompose to caramel and carbon if heated too long	Yes	Yes	Non-toxic to environment, nourishment for many organisms
Tannerite	VERY controlled incineration	Burns, almost never detonates	DO NOT DUMP!	DO NOT DUMP!	While ammonium nitrate is a good nitrogen source for plants, the aluminium and other impurities present are generally harmful for wildlife
Tartaric acid	Not required; can be disposed in anyway	Decomposes, releasing combustion gasses, carbon oxides, water vapors	Yes	Yes	Safe, low toxicity; occurs naturally in fruits in large concentrations
Tartrazine	Strong dilution in lots of water an poured down the drain; Oxidation with Fenton's reagent, chromic acid	Generates carbon oxides, water vapor, soot and nitrogen vapors	Strong dilution	Strong dilution	Not suspected to be bioaccumulative
TATB	Incineration in a kiln; Oxidation with Fenton's reagent	Burns and decomposes to release combustion gases and soot	DO NOT DUMP	DO NOT DUMP	Toxic to the environment, though limited data is available
Terbium(III) oxide	Unnecessary, simply dump in trash	Releases absorbed water or carbon dioxide	Unnecessary	Yes	Effects unknown, may stimulate plant growth
Terbium acetate	No required, simply dump in trash or recycle	Breaks down at high temperatures to release carbon oxides	Yes	Yes	Effects unknown
Terbium sulfate	No required, simply dump in trash	Breaks down at high temperatures to release sulfur oxides	Yes	Yes	Effects unknown
tert-Amyl alcohol	Incineration, oxidation with Fenton's reagent, strongly diluted and poured down the drain	Will burn to release carbon dioxide and water vapors	Dilute first	Dilute first	Poses moderate toxicity to wildlife, water bodies
tert-Butanol	Incineration, oxidation with Fenton's reagent, strongly diluted and poured down the drain	Will burn to release carbon dioxide and water vapors	Dilute first	Dilute first	Poses moderate toxicity to wildlife, water bodies
tert-Butyl chloride	Incineration, oxidation with Fenton's reagent; hydrolysis, followed by dilution, then poured down the drain	Will burn to release carbon dioxide, water vapors and HCl fumes	Dilute to hydrolyze first	Dilute to hydrolyze first	Poses moderate toxicity to wildlife, water bodies
Tetraamine copper(II) complex	Pyrolysis; any acid	Gives off water vapors and ammonia, leaving copper oxide behind	Yes, unless there's copper or brass plumbing	No	Copper ions pose toxicity to most organisms
Tetraaminecopper(II) persulphate	Controlled detonation; Any acid	Detonation, releasing ammonia, sulfur dioxide copper oxide	Do not dump	Do not dump	Copper ions are toxic to small animals
Tetrabutyltin	Addition of diluted mineral acid; Addition of aq. NaOH to hydrolyze butyl derivates to butanol; Separation of compounds, incineration of butanol; Tin waste can be dumped in trash or taken to disposal centers	Decomposes above 265 °C, may ignite in open air above 107 °C in the presence of a flame	DO NOT DUMP	DO NOT DUMP	Tin compounds are known to be harmful
Tetrachlorocupric acid	Any base, carbonate, bicarbonate	Gives off hydrochloric acid fumes, leaving copper oxide behind	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic for wildlife
Tetrahydrofuran	Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area	Burns, giving off combustion gasses	DO NOT DUMP	DO NOT DUMP	Toxic and dangerous for wildlife
Tetralin	Mixed with a more flammable solvent and incinerated	Ignites at high temperatures and generates carbon oxides, water vapors, carbon monoxide, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife and water bodies
Tetranitroglycoluril	Incineration, done outside	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	Do not dump	Do not dump	Little information about its environmental impact
Tetryl	Incineration, done outside; Controlled oxidation with Fenton's reagent	Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot	DO NOT DUMP	DO NOT DUMP	Displays moderate toxicity to aquatic life
Thioglycolic acid	Hydrogen peroxide, bleach; poured down the drain	Decomposes to release sulfur dioxide and carbon dioxide	Neutralize it with bleach or hydrogen peroxide first	Not recommended	Harmful to organisms due to its ability to weaken S-S bonds in various tissues
Thionyl chloride	Any base, carbonate, bicarbonate;	Not useful; Decomposes to release sulfur dioxide and chlorine	NO! Neutralize it first!	NO! Neutralize it first!	Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
Thiophene	Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid	Generates carbon oxides, water vapor, sulfur oxides, soot, sulfur	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife
Thiourea	Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid	Generates carbon oxides, water vapor, sulfur oxides, soot and nitrogen	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife
Thiourea dioxide	Pyrolysis, preferably in an oxidizing atmosphere; strong dilution and poured down the drain	Generates carbon oxides, sulfur oxides, water vapors and nitrogen	DO NOT DUMP	DO NOT DUMP	Harmful to wildlife
Threitol	Not required	Yields carbon oxides, water vapors	Yes	Yes	Low toxicity to environment
Thymol blue	Destroyed with an oxidizing mixture; Diluted and poured down the drain	Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs	Yes, but not recommended	Yes, but not recommended	May be harmful to microorganisms, fauna and water bodies
Tin(II) chloride	Excess base, carbonate, bicarbonate; Should be taken to waste disposal centers	Gives off hydrochloric acid fumes in the presence of moisture	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic to wildlife
Tin(IV) chloride	Any base, carbonate, bicarbonate; Should be taken to waste disposal centers	Gives off hydrochloric acid fumes in moist air	DO NOT DUMP	DO NOT DUMP	Corrosive and toxic to wildlife
Titan yellow	Destroyed with an oxidizing mixture; Diluted and poured down the drain	Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs	Yes, but not recommended	Yes, but not recommended	May be harmful to microorganisms, fauna and water bodies
Titanium dioxide	Not required; Can be dumped in trash	Not useful; Fuses in the presence of alkaline and alkaline-earth oxides and hydroxides to titanates	Yes, but not recommended	Yes, but not recommended	May lead to staining water bodies and soil in a white color
Titanium nitrate	Dissolving it in water, followed by precipitation of titanium dioxide by adding an alkali	Decomposes releasing nitrogen dioxide	Not recommended	Not recommended	Potentially harmful; Nitrates may serve as nourishment for plants; Titanium compounds show moderate toxicity
Titanium nitride	Not required; Can be dumped in trash	Not useful; May react with alkaline and alkaline-earth oxides and hydroxides to titanates	Yes, but not recommended	Yes, but not recommended	May lead to staining, irritant, abrasive
Titanium(IV) chloride	CAREFUL addition to a diluted aqueous alkaline solution	Not useful; boils and hydrolyzes	DO NOT DUMP	DO NOT DUMP	Corrosive and harmful to all organisms
Toluene	Oxidation with Fenton's reagent; Incineration, best done with an afterburner	Flammable, burns in air to release carbon oxides, water vapors, soot, VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife and very dangerous to aquatic life, as well as soil
Triaminoguanidine	Oxidation with Fenton's reagent or piranha solution	Generates carbon oxides, water vapor, soot and nitrogen vapors	DO NOT DUMP	DO NOT DUMP	Considered to be harmful, but little is known about its toxicity
Trichloroacetic acid	Neutralization and dehalogenation with excess sodium hydroxide; Reduction with metallic powders to acetic acid	Evaporates and burns at high temperatures, releasing toxic fumes	DO NOT DUMP	DO NOT DUMP	Toxic and corrosive to most wildlife
Trichloroethylene	Sodium hydroxide; Oxidation with Fenton's reagent	Not useful	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Trichloroisocyanuric acid	Sodium thiosulfate, sulfite, bisulfite, metabisulfite	Breaks down to release chlorine	Yes	DO NOT DUMP	Toxic to wildlife
Triethanolamine	Mixed with a more flammable solvent and incinerated	Yields carbon oxides, water vapor at high temperatures	Strongly diluted	Not recommended	Toxic to organisms, dangerous to aquatic and soil life
Triethyl borate	Incineration; Hydrolysis with water	Burns in air	Not recommended	Not recommended	Effects unknown to environment
Triethyl citrate	Diluted with another solvent, followed by incineration	Burns in air, releasing carbon dioxide, water vapors, soot and acrid fumes	Yes, but not recommended	Yes, but not recommended	Low toxicity to organisms, may harm water bodies
Triethylamine	Diluted with another solvent, followed by incineration; Neutralization with an acid and destroyed via oxidation	Burns in air	DO NOT DUMP	DO NOT DUMP	Toxic to most lifeforms, dangerous to water bodies
Trifluoroacetic acid	Bicarbonates, carbonates, bases, oxides	Boils off	Neutralize first	DO NOT DUMP	Corrosive and poisonous to organisms; does not readily degrade in environment, but does not bioaccumulate
Trimethyl borate	Incineration; Hydrolysis with water	Burns in air	Not recommended	Not recommended	Effects unknown to environment
Trimethyl phosphate	Hydrolysis with sodium hydroxide	Decomposes and may ignite at high temperatures, releasing carbon and phopshorus oxides	Not recommended	Not recommended	Effects unknown to environment
Trimethylamine	Incineration	Burns in air, giving off carbon dioxide, nitrogen and water vapors	Not recommended	Not recommended	Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
Trimethylphosphine	Incineration	Burns in air releasing carbon and phosphorus oxides	Not recommended	Not recommended	Extremely toxic to organisms; Other environmental effects unknown
Trinitroaniline	Strong dilution, followed by addition of dil. NaOH; Oxidation with Fenton's reagent	Burns and decomposes to release combustion gasses and soot, may explode	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment, especially for animals
Trinitrophloroglucinol	Careful and controlled destruction using an oxidizing solution	May explode	DO NOT DUMP	DO NOT DUMP	Extremely toxic to all organisms
Trinitrotoluene	Oxidation with Fenton's reagent	Burns and decomposes to release combustion gasses and soot	DO NOT DUMP	DO NOT DUMP	Extremely toxic to the environment, especially for animals
Triphenylmethanol	Dissolved in a more flammable solvent and incinerated	Flammable, gives off carbon dioxide, PAHs, soot and water vapors	DO NOT DUMP	DO NOT DUMP	Potentially harmful for wildlife and aquatic life in large concentrations
Triphenylphosphine	Incineration	Burns in air releasing carbon and phosphorus oxides	Not recommended	Not recommended	Effects unknown to environment
Tris(ethylenediamine)nickel perchlorate	Safe detonation; Residual perchlorates can be destroyed by adding metallic iron under UV light, in the absence of air.	Detonates	Do not dump	Do not dump	Nickel and perchlorates are toxic to environment
Tungsten carbide	Not required; can be dumped in trash or taken to waste disposal centers	Not useful (refractory)	DO NOT DUMP	Yes (if pure); No (if it contains cobalt)	Toxic to the environment if it contains cobalt
Urea	Not required	Generates carbon oxides, nitrogen fumes; May corrode metal container, if done in one	Yes	OH YES	May cause uncontrolled algae growth in water bodies
Urea nitrate	Cooled basic solution (NaOH, KOH, Ca(OH)₂)	Decomposes when burned; May explode if heated at high temperatures	Yes	OH YES!	Safe, good fertilizer; May cause uncontrolled algae growth in water bodies
Urea peroxide	Water, iron(III) oxide, manganese dioxide	Decomposes when heated to high temperatures, releasing water vapor	Yes	Yes, though not recommended in large quantities	Irritant and corrosive to large organisms, kills small organisms
Vanadium pentoxide	Not required; should be taken to disposal facilities	Not useful; Turns into oxides of lower states at high temperatures	DO NOT DUMP	DO NOT DUMP	Vanadium ions pose toxicity for wildlife
Violuric acid	Not required; and oxidizing mixture may be used to oxidize it completely if desired	Decomposes above 250 °C to release carbon dioxide, water vapors and soot	Dilute first	Dilute first	There is little data available for its environmental effects, doesn't appear to be toxic
Warfarin	Strong dilution in lots of water an poured down the drain; Oxidation with Fenton's reagent, chromic acid	Generates carbon oxides, water vapor, soot and nitrogen vapors	Strong dilution	Strong dilution	Lethal to small animals and toxic to larger ones in small amounts; Not suspected to be bioaccumulative
Water	Not required	Leads to steam	YES	YES	It's...water
Whistle mix	Dissolution in water; Reduction with sodium thiosulfate, sulfite, metabisulfite	Detonates	DO NOT DUMP	DO NOT DUMP	Potassium chlorate is a potent herbicide
Wood	Incineration; Dumping in trash	Will burn if ignited, releasing carbon oxides, water vapors and soot	Do not dump	Do not dump uncomposted	Uncomposted wood is harmful for environment, especially sawdust
Wood's metal	Recycling; Wastes should be taken to hazardous metal disposal centers	Melts at 70 °C and gives off harmful cadmium fumes at high temperatures	DO NOT DUMP	DO NOT DUMP	While bismuth and tin don't present great hazard to environment, lead and cadmium do
Xanthan gum	Not required	Pyrolysis gives foul smelling compounds	Yes	Yes	Safe, biodegradable; nourishment for many organisms
Xanthatin	Not required	Burns at high temperatures, releasing carbon dioxide, water and soot	Yes, but dilute first	Yes, but dilute first	Safe, biodegradable
Xylene	Oxidation with Fenton's reagent; Incineration, best with an afterburner	Burns in air, to release combustion gasses, soot and VOCs	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife and hazardous to water bodies
Xylitol	Not required	Melts when heated; not useful	Yes	Yes	Cannot be digested by most lifeforms, otherwise little to no toxicity to most organisms; It is however known to be fatal to dogs and some birds
Xylitol pentanitrate	Cooled aqueous solution of excess sodium hydroxide	Detonates at temperatures > 160 °C	DO NOT DUMP	In small amounts	Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
Ytterbium(III) oxide	Unnecessary, simply dump in trash; recycle	Releases absorbed water or carbon dioxide	Do not dump	Do not dump	Effects unknown, may be toxic
Yttrium(III) oxide	Unnecessary, simply dump in trash; recycle	Releases absorbed water or carbon dioxide	Do not dump	Do not dump	Effects unknown, may be toxic
Zamak	Recycling; Traces of zamak waste can be dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and zinc via electrowinning	Not useful; melts above 380 °C and may fume	DO NOT DUMP	DO NOT DUMP	Low quality zamak may contain lead or cadmium which are harmful to the environment
Zeolite	Not required	Calcinates at high temperatures	Yes, but not recommended	Yes	Unless contaminated with hazardous compounds, it poses little danger to environment
Zinc acetate	Not required	Breaks down to zinc oxide, carbon oxides, water, acetone, acetic anhydride (?) at high temperatures	Yes	Yes	Unless contaminated, good source of zinc for plants, though a bit too acidic; may lower soil pH
Zinc carbonate	Not required	Breaks down to zinc oxide and carbon oxide at high temperatures	Yes	Yes	Unless contaminated, good source of zinc for plants, though a bit too alkaline
Zinc chloride	Any base, carbonate, bicarbonate	Gives off hydrochloric acid fumes if moist	Neutralize first	Neutralize first	Chlorides are dangerous for chloride-sensitive plants in large quantities
Zinc chromate	Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid	Not very useful	DO NOT DUMP	DO NOT DUMP	Cr(VI) is toxic for wildlife
Zinc nitrate	Sodium, potassium or ammonium carbonate/bicarbonate to precipitate zinc carbonate which is inert; recovery of alkali nitrates, dilution of zinc carbonate and poured down the drain	Decomposes to zinc oxide, releasing nitrogen dioxide and oxigen	Yes, but not recommended	Dilute it strongly	May pose a threat to aquatic life in large quantities; may cause unwanted algal bloom; source of zinc and nitrogen to plants
Zinc oxide	Not required; Weak acids can be used to dissolve zinc oxide stains to soluble zinc compounds	Turns the oxide yellow at high temperatures; process is reversible	Not recommended	Yes, but not recommended	May pose a threat to aquatic life in large quantities
Zinc perchlorate	Precipitation with a soluble hydroxide; Reduction of perchlorate to chloride	Gives off chlorine oxide fumes, leaving behind zinc oxide slag; may decompose violently if organic contaminant present	DO NOT DUMP!	DO NOT DUMP!	Perchlorates are toxic to wildlife
Zinc peroxide	Hydrolysis with water; Any acid	May explode at over 212 °C	Best to neutralize it first	No	Peroxides are deadly to small animals
Zinc phosphate	Not required	Not useful	No	Yes	Source of zinc and phosphorus for wildlife
Zinc sulfate	Not always required; Zinc metal can be recovered through electrowinning and the diluted sulfuric acid neutralized with a base	Not useful	Yes	Yes	Unless contaminated, is a good source of zinc for plants
Zinc sulfide	Hydrogen peroxide	May give off hydrogen sulfide in the presence of water at high temperatures	DO NOT DUMP	DO NOT DUMP	Toxic to wildlife
Zingiberene	Not required	Burns at high temperatures, releasing carbon dioxide, water and soot	Yes, but dilute first	Yes, but dilute first	Safe, biodegradable
Zirconium nitrate	Dissolving it in water, followed by precipitation of zirconium dioxide by adding an alkali	Decomposes releasing nitrogen dioxide	Not recommended	Not recommended	Potentially harmful; Nitrates may serve as nourishment for plants; Zirconium displays moderate toxicity
Zirconyl chloride	Precipitate to zirconium oxide; recycle	Decomposes releasing HCl and water vapors	Do not dump	Do not dump	Unknown effects

References

Relevant Sciencemadness threads

[1] ttp://woelen.homescience.net/science/chem/exps/rules.html

[2] ttp://www.atsdr.cdc.gov/toxprofiles/tp187-c5.pdf

[3] ttp://link.springer.com/article/10.1007%2FBF02318626

[4] ttp://pubs.rsc.org/en/Content/ArticleLanding/2007/EM/b709571f#!divAbstract

[5] ttp://www.google.com/patents/US2519284

[6] Chemical Technology and Emission Control, 2012, M.B. Hocking, p. 216

[7] ttp://www.drugfuture.com/chemdata/cuprous-sulfite.html

[8] ttp://www.inchem.org/documents/sids/sids/115775.pdf

[9] ttp://pubs.acs.org/doi/abs/10.1021/es7029703?journalCode=esthag

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

Difference between revisions of "Proper disposal of chemicals"

Latest revision as of 20:09, 13 March 2024

Contents

Standard procedures

Acids

Bases

Cyanides

Heavy metals

Inorganic anions

Metal ions

Organic compounds

Recycling

Down the drain vs. into the soil

Other

Legal considerations

Chemical disposal table

A-L

M-Z

References

Relevant Sciencemadness threads

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@@ Line 1: / Line 1: @@
-Most chemicals used by the amateur chemist come from every day use and do not require special treatment before being discarded in the usual way. However there are many chemicals, such as heavy metal compounds or organic solvents, that require special disposal techniques. In the interest of keeping lab costs low, though, it may be a good idea to look into [[Reagent recycling|ways to recycle and recover chemicals]] such as solvents, which can be reclaimed by distillation.
+Most chemicals used by the amateur chemist come from every day use and do not require special treatment before being discarded in the usual way. However there are many chemicals, such as heavy metal compounds or organic solvents, that require '''special disposal techniques'''. In the interest of keeping lab costs low, though, it may be a good idea to look into [[Reagent recycling|ways to recycle and recover chemicals]] such as solvents, which can be reclaimed by distillation.
+'''IMPORTANT NOTE!!!'''
+The information posted in this article is merely a collection of observations from various amateur chemists and is '''NOT''' meant for professionally disposing large amounts of chemicals and should '''NOT''' be used as a guideline on neutralizing reagents. For the disposal of large amounts of hazardous reagents or for special reagents, ask the help of professional hazardous chemical disposal entities. '''ALWAYS CHECK THE LOCAL LAWS BEFORE DISPOSING OF ANY REAGENT!''' This wiki will '''NOT''' take any responsibility (legal or other) for any (failed) attempts at neutralizing hazardous reagents. Do not treat the written disposal guidelines as absolute.
 ==Standard procedures==
 ===Acids===
-Acids should be neutralized with a base, such as carbonate/bicarbonate, hydroxide ([[calcium hydroxide]] e.g.) usually as a solution. The soluble salts of halogen acids and oxoacids (except [[Perchloric acid|perchloric]] and [[chloric acid]]s) can be safely poured down the drain. Special acids and their salts, such as [[hydrazoic acid]] and azides must not be poured directly down the drain, they must be treated with nitrous acid to destroy them.
+Acids are best neutralized with a base, such as carbonate/bicarbonate, hydroxide ([[calcium hydroxide]] e.g.) best as aqueous solution. Before neutralizing them, always dilute the acid first, to limit splashing or boiling the acid. ALWAYS POUR THE ACID IN WATER AND NOT THE OTHER WAY AROUND! After you diluted the acid, dissolve the base in water or, if it's insoluble, add just enough water to turn it into a suspension. Slowly add the base in the diluted acid, and watch out for foaming or, if it's a strong acid, boiling. '''Never add solid alkali bases in strong acids, as this will cause the acids to violently boil and splash acid everywhere.''' After neutralization, you're left with a solution containing the salt of the neutralized acid. Salts of hydrochloric, sulfuric, phosphoric acids can be further diluted then safely poured down the drain, or recycled if you want.
+The soluble salts of halogen acids and oxoacids (except [[Perchloric acid|perchloric]] and [[chloric acid]]s) can be safely poured down the drain. Special acids and their salts, such as [[hydrazoic acid]] and azides must not be poured directly down the drain, they must be treated with [[nitrous acid]] to destroy them.
-Oxidizing mixtures, such as [[Aqua regia]], [[piranha solution]] or [[mixed acid]] must also never be poured down the drain, as they're much more dangerous than simple acids, and can wreak havoc on your plumbing. Instead, they must be neutralized first.
+Oxidizing mixtures, such as [[aqua regia]], [[piranha solution]] or the [[nitrating mixture]] must also never be poured down the drain, as they're much more dangerous than simple acids, and can wreak havoc on your plumbing. Instead, they must be neutralized first.
 ===Bases===
-Alkali hydroxides can be left in open air to absorb [[carbon dioxide]] as well as corrosive and unpleasant gases, forming carbonates and salts. For quicker results, alkali bases can be neutralized with any acid, though for practical and economical purposes, [[acetic acid]] or [[citric acid]] are sufficient. Bases may be reused to absorb acidic vapors in a desiccator, which mitigates their dangers. Care must be taken to avoid excess heating with strong bases.
+Alkali hydroxides can be left in open air to absorb [[carbon dioxide]] as well as corrosive and unpleasant gases, forming carbonates and salts. However, as the carbonate is formed, it will creep out of the flask, covering it. For quicker results, alkali bases can be neutralized with any acid, though for practical and economical purposes, [[acetic acid]] or [[citric acid]] are sufficient. Just make sure to dilute the bases first. Bases may be reused to absorb acidic vapors in a desiccator, which mitigates their dangers. Care must be taken to avoid excess heating with strong bases.
 ===Cyanides===
-Waste containing [[cyanide]], either from gold refining or from organic extractions of alkaloids from cyanide containing plants, must be neutralized with [[Sodium hypochlorite|bleach]] or [[hydrogen peroxide]], to turn them into less harmful cyanates. Cyanates can be further neutralized to nitrogen and carbon dioxide.
+Waste containing [[cyanide]], either from gold refining or from organic extractions of alkaloids from cyanide containing plants, must be neutralized with [[Sodium hypochlorite|bleach]] or [[hydrogen peroxide]], to turn them into less harmful cyanates. The resulting cyanates will slowly hydrolyze in basic environment to ammonium carbonates, while excess bleach/oxidizer will further convert them to nitrogen and carbon dioxide.
-Cyanides must never be poured down the drain.
+Cyanides must never be poured down the drain before neutralization.
 ===Heavy metals===
 Since the biggest hazard comes from the volatile and soluble heavy metal compounds, it's best to convert them into insoluble compounds, which are less toxic.
-Heavy metals, such as [[mercury]], can often be neutralized with [[sulfur]], generating [[mercury(II) sulfide]], which is generally insoluble in water and has little reactivity.
+Heavy metals, such as [[mercury]], can often be neutralized with a mixture of [[zinc]] and [[sulfur]] powders, which yields [[mercury sulfide]] aka cinnabar. This compound is insoluble in water and acids, showing little reactivity.
-Very dangerous heavy metals such as [[cadmium]] and [[arsenic]] should always be properly disposed of at designated facilities, as their effects on human life and the environment is sometimes catastrophic.
+Very dangerous heavy metals such as [[cadmium]], [[thallium]] and [[arsenic]] should always be properly disposed of at designated facilities, as their effects on human life and the environment is sometimes catastrophic.
 ===Inorganic anions===
@@ Line 34: / Line 40: @@
 [[Cobalt]] salts may be carcinogenic and should be taken to a proper waste disposal facility.
-[[Aluminium]] compounds should not be disposed in the sewage. They can, however, be converted to [[aluminium sulfate]], which is safe to dispose of in soil, though it will cause a decrease in pH(it is used as a fertilizer for this purpose). It is a good idea to dispose of aluminium sulfate and a safe basic compound (such as calcium carbonate) at the same time.
+[[Aluminium]] compounds generally should not be disposed in the sewage. They can, however, be converted to [[aluminium sulfate]], which is safe to dispose of in soil, though it will cause a decrease in pH (it is used as a fertilizer for this purpose), and in diluted form can be poured down the drain, as at low concentrations it's used in the treatment of water. It is a good idea to dispose of aluminium sulfate and a safe basic compound (such as calcium carbonate) at the same time.
 Many compounds of [[chromium]], especially chromium(VI), are poisonous and carcinogenic. These should be converted to the +3 oxidation state; hydrogen peroxide as well as sulfites or thiosulfate will do this, which is typically the least harmful, preferably to [[chromium(III) oxide]]. [[Chromium dioxide]] may be another feasible option, as it is found in cassette tapes and can be recycled with them.
-[[Zinc]] compounds can be refined to zinc metal using electrowinning. It's not recommended to use zinc compounds as zinc supplemements for soil or livestock, as it may contain traces of cadmium.
+[[Zinc]] compounds can be refined to zinc metal using electrowinning. It's not recommended to use zinc compounds obtained from technical sources as zinc supplements for soil or livestock, as it may contain traces of heavy metals, such as cadmium.
 Some MSDS sheets recommend that rare earths be converted to their oxalates or carbonates and disposed of in the trash.
@@ Line 45: / Line 51: @@
 ===Organic compounds===
-Organic solvents should be dumped in labeled waste tanks, such as: halogenated, non-halogenated solvents. Flammable organic solvents that safe in low exposures such as [[ethanol]], [[methanol]], and [[acetone]] can often simply be burned outside for disposal, as most often their combustion products are simply carbon dioxide and water. It may be a better idea just to recover them by distillation, though.
+Organic solvents should be poured in labeled waste tanks, such as: halogenated, non-halogenated solvents. Flammable organic solvents that are safe in low exposures, such as [[ethanol]], [[methanol]], and [[acetone]] can often simply be burned outside for disposal, as most often their combustion products are simply carbon dioxide and water. It may be a better idea just to recover them by distillation, though. An [[alcohol burner]] can be used to burn these liquids.
-A good way to destroy halogentated and aromatic compounds is with [[Fenton's reagent]], which breaks them down to simpler non-toxic compounds. It's best however, to avoid dumping large quantities of waste, as the reaction in exothermic and may splash or volatilize some of the waste, so it's best to perform the neutralization in small steps.
+Halogenated compounds like [[chloroform]] can be neutralized with a strong base, although this neutralization should not be done without safety precautions.
-Organic salts, such as acetates and oxalates can be pyrolyzed to carbonates and water vapors.
+A good, though resource-intensive way to destroy halogenated and aromatic compounds is with [[Fenton's reagent]], which breaks them down to simpler non-toxic compounds. It's best however, to avoid dumping large quantities of waste, as the reaction in exothermic and may splash or volatilize some of the waste, so it's best to perform the neutralization in small steps. Many methods described in literature involve slowly bubbling the organic compound with a carrier gas in the Fenton solution, as this increases oxidation and limits splashing. However, because only small amounts of compound gets neutralized at a time, this process takes a while. For safety, you will need to use diluted hydrogen peroxide, meaning that at the end of the neutralization process you will be left with a large volume of water filled with iron precipitate and some organic residues that did not decompose completely, though they're generally not as toxic as their parent compound.
+[[Chromic acid]] and it's derivatives can also be used to destroy hazardous chemical compounds, as it neutralizes them to carbon dioxide and water. However, chromic acid will (violently) oxidize alcohols to their respective aldehydes or ketones, which cannot be oxidized further by the acid alone, which limits it's use in neutralizing many compounds.
+[[Piranha solution]] is an excellent material for the disposal of organic compounds. The decomposition is highly exothermic and the resulting smoke is very dangerous. As such, this method is generally considered a last resort in disposal, and it's mostly used for [[Cleaning glassware|cleaning]] rather than disposal.
+Organic salts, such as acetates and oxalates can be pyrolyzed to carbonates and water vapors. The decomposition works best in oxygen-rich atmosphere.
 ==Recycling==
@@ Line 57: / Line 69: @@
 == Down the drain vs. into the soil ==
-The availability of these disposal methods varies depending on where you live. If you live in an apartment block, you only have the drain. If you live in a suburban house, you have both. If you live in some quaint rustic shithole like the author of this edit, you only have the "into the soil" option.
+The availability of these disposal methods varies depending on where you live. If you live in an apartment block, you only have the drain. If you live in a suburban house, you have both. If you live in some quaint rustic <strike>shithole</strike> paradise like the author of this edit, you only have the "into the soil" option.
-Generally, the soil option is safer, because there is no plumbing you should worry about, but some chemicals shouldn't be released into the soil, either. In general, your designated place for pouring chemicals into the soil should be far from any gardens, horticulture or any other agricultural objects. But chemicals marked as "Oh yes!" in the table are harmless and even useful in agriculture as fertilizers. These you can pour down in your garden.
+Generally, the soil option is safer, because there is no plumbing you should worry about, but some chemicals shouldn't be released into the soil, either. In general, your designated place for pouring chemicals into the soil should be far from any gardens, horticulture or any other agricultural objects. Chemicals marked as "Oh yes!" in the table below are harmless and even useful in agriculture as fertilizers. These you can pour down in your garden.
+Lists of various chemical compounds that can be safely released in the ground or down the drain can be found [http://www.riskmanagement.ubc.ca/environment/hazardous-waste-management/waste-disposal-guide/chemicals here], [http://www.ehs.ucsf.edu/disposal-modes-non-hazardous-lab-waste here] or [http://web.stanford.edu/dept/EHS/prod/enviro/waste/nohaz.html here].
 ==Other==
-Heavy metal salts or solutions can be mixed with cement, and trapped in the resulted concrete block. The resulting block can also be covered in another layer of cement, to reduce the diffusion of the heavy metals. Unless the resulting concrete is damaged, broken and dissolved in acid, the heavy metal ions will not be released. However, this merely is a method to prevent the heavy metals from being released in the environment, and is not a permanent way of disposal.
+Heavy metal salts or solutions can be mixed with cement, and trapped by making a concrete block. The resulting block can also be covered in another layer of cement, to reduce the diffusion of the heavy metals. Unless the concrete is damaged, broken or dissolved in acid, the heavy metal ions will not be released. However, this merely is a method to prevent the heavy metals from being released in the environment and is not a permanent way of disposal.
+==Legal considerations==
+Releasing hazardous chemicals in the environment is a crime in all jurisdictions and carries heavy fines or even jail time. While properly neutralized reagents ''may'' be poured down the drain, dumping very large amounts of said reagents is frowned upon. Incineration is attractive as it's a good method of getting rid of wastes, but unless you're using an incinerator, some material will not be destroyed and instead it will be scattered in air. Likewise, it's forbidden to burn certain materials in open air, such as aromatic compounds or organosulfur compounds and for those, special incinerators are a must.
+Always check the local laws before choosing the disposal method.
 ==Chemical disposal table==
+===A-L===
 {| border="1" cellpadding="1" cellspacing="1" class="article-table sortable" style="width: 100%;"
 |-
@@ Line 74: / Line 94: @@
 ! scope="col"|Environmental considerations
 |-
-| [[1,2-Dichloroethane]]
+| style="text-align:center;"| [[1,2-Dichloroethane]]
-|
+| style="text-align:center;"| Oxidation with Fenton's reagent; Concentrated solution of sodium hydroxide
-|
+| style="text-align:center;"| Flammable, releases corrosive fumes
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[1,2,4-Butanetriol trinitrate]]
+| style="text-align:center;"| Safe detonation in remote area; Strong dilution in organic solvent followed by safe incineration; Hydrolysis with cold sodium hydroxide solution
+| style="text-align:center;"| Detonation above 230 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms; nitrate source for plants
+|-
+| style="text-align:center;"| [[1,3,5-Trichlorohexahydrotriazine]]
+| style="text-align:center;"| Reducing agent capable of safely neutralizing chlorine
+| style="text-align:center;"| Breaks down above 78 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Possibly harmful for organisms
+|-
+| style="text-align:center;"| [[1,4-Dichlorobenzene]]
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as chromic acid, piranha solution, Fenton's reagent
+| style="text-align:center;"| Flammable, releases corrosive fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, suspected carcinogen
+|-
+| style="text-align:center;"| [[1,4-Dioxane]]
+| style="text-align:center;"| Incineration (no peroxides); Oxidation with Fenton's reagent; Chlorination in water with chlorine or hypochlorous acid; If peroxides are present, addition of excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
+| style="text-align:center;"| Incineration produces carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Although small amounts can be diluted with large amounts of water and poured down the drain, 1,4-dioxane does not undergo significant biodegradation and most will end up in the environment.<ref>http://www.atsdr.cdc.gov/toxprofiles/tp187-c5.pdf</ref>
+|-
+| style="text-align:center;"| [[2-Chloroethanol]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon dioxide, HCl, water, phosgene
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife
+|-
+| style="text-align:center;"| [[2-Mercaptoethanol]]
+| style="text-align:center;"| Hydrogen peroxide, bleach; poured down the drain
+| style="text-align:center;"| Decomposes to release hydrogen sulfide, sulfur dioxide and carbon dioxide
+| style="text-align:center;"| Neutralize it with bleach or hydrogen peroxide first
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Harmful to organisms due to its ability to weaken S-S bonds in various tissues
+|-
+| style="text-align:center;"| [[2-Nitrotoluene]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates oxidation products and lots of soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife
+|-
+| style="text-align:center;"| [[2,2,4-Trimethylpentane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Generates carbon oxides, water vapor and soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife and dangerous for water bodies as it floats
+|-
+| style="text-align:center;"| [[2,4-Dinitrobromobenzene]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and bromine vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife
+|-
+| style="text-align:center;"| [[4-Aminoantipyrine]]
+| style="text-align:center;"| Strong dilution; Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Considered to be toxic to wildlife, but not much is known about its effects
+|-
+| style="text-align:center;"| [[4-Toluenesulfonyl chloride]]
+| style="text-align:center;"| Neutralization with diluted aq. NaOH; Strong dilution; Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot, sulfur oxides and HCl fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Considered to be toxic to wildlife, but not much is known about its effects
+|-
+| style="text-align:center;"| [[Acetaldehyde]]
+| style="text-align:center;"| Incineration; Sodium pyrosulfite; L-cysteine
+| style="text-align:center;"| Generates carbon oxides and water vapors; some will evaporate when heated
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to the wildlife
+|-
+| style="text-align:center;"| [[Acetamide]]
+| style="text-align:center;"| Dilution in a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon monoxide, dioxide, ammonia, acetonitrile, hydrogen cyanide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Possibly harmful
+|-
+| style="text-align:center;"| [[Acetamidine hydrochloride]]
+| style="text-align:center;"| Addition to water followed by heating, yielding acetic acid and ammonium chloride
+| style="text-align:center;"| Anhydrous conditions yields ammonium chloride and acetonitrile; In presence of water acetic acid and ammonium chloride are formed
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Effects unknown, possibly toxic
+|-
+| style="text-align:center;"| [[Acetic acid]]
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides
+| style="text-align:center;"| Flammable (high concentrations), no dangerous combustion products
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; avoid dumping large amounts, acidifies soil
+|-
+| style="text-align:center;"| [[Acetic anhydride]]
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides
+| style="text-align:center;"| Flammable, no dangerous combustion products
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Biodegradable; avoid dumping large amounts, acidifies soil
+|-
+| style="text-align:center;"| [[Acetone]]
+| style="text-align:center;"| Oxidation/incineration, reducing, photolysis
+| style="text-align:center;"| Flammable, no dangerous combustion products
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Biodegradable, though not advised for large amounts
+|-
+| style="text-align:center;"| [[Acetone peroxide]]
+| style="text-align:center;"| Photolysis, detonation in safe area
+| style="text-align:center;"| Explosive, not recommended
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Biodegradable, though not advised
+|-
+| style="text-align:center;"| [[Acetonitrile]]
+| style="text-align:center;"| Fenton's reagent; Aqueous solution of excess sodium hydroxide<ref>http://link.springer.com/article/10.1007%2FBF02318626</ref>
+| style="text-align:center;"| All treatments give some hydrogen cyanide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life due to its cyanide/nitrile group; does not quickly break down in environment
+|-
+| style="text-align:center;"| [[Acetophenone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapors
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Relative safe, biodegradable; Occurs naturally in small amounts
+|-
+| style="text-align:center;"| [[Acetyl chloride]]
+| style="text-align:center;"| Slow addition to a basic solution
+| style="text-align:center;"| Burn products include hydrogen chloride which is corrosive
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic and corrosive to organisms and environment
+|-
+| style="text-align:center;"| [[Acetylacetone]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Acetylene]]
+| style="text-align:center;"| Oxidation, photolysis
+| style="text-align:center;"| Dangerously flammable
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Acetylsalicylic acid]]
+| style="text-align:center;"| Any base
+| style="text-align:center;"| Not particularly helpful
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Acrolein]]
+| style="text-align:center;"| Addition of a base, which causes polymerization
+| style="text-align:center;"| Burns in the presence of oxygen releasing carbon oxides, water, and various other organic products
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to all organisms
+|-
+| style="text-align:center;"| [[Activated carbon]]
+| style="text-align:center;"| Burning, dumping in ground; Desorption by heating it to high temperature and reuse
+| style="text-align:center;"| Results in carbon dioxide and ash
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| OH YES!
+| style="text-align:center;"| Unless it adsorbed dangerous volatile compounds or heavy metals, it can be used as a fertilizer (powdered form); Less effective as beads or pellets
+|-
+| style="text-align:center;"| [[Agar]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; nourishment for many organisms
+|-
+| style="text-align:center;"| [[Allyl alcohol]]
+| style="text-align:center;"| Diluted with a flammable solvent, like ethanol or acetone and burned; Epoxidation and hydrolysis to glycerol
+| style="text-align:center;"| Burns, releasing an acrid smoke
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic to all organisms
+|-
+| style="text-align:center;"| [[Alnico]]
+| style="text-align:center;"| Recycled<br>Dumped in trash
+| style="text-align:center;"| Loses magnetism when heated and melts at high temperatures
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Nickel and cobalt are harmful for the environment
+|-
+| style="text-align:center;"| [[Alpha-pinene]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Aluminium chloride]]
+| style="text-align:center;"| Treatment with water, precipitation with a base
+| style="text-align:center;"| No effect; Water solutions however will give off hydrogen chloride vapors
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Lowers the soil pH, corrosive
+|-
+| style="text-align:center;"| [[Aluminium iodide]]
+| style="text-align:center;"| Treatment with water, precipitation with a base; recycling of iodine
+| style="text-align:center;"| No effect; Water solutions however will give off hydrogen iodide and iodine vapors
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Lowers the soil pH, corrosive
+|-
+| style="text-align:center;"| [[Aluminium isopropoxide]]
+| style="text-align:center;"| Incineration outside; Treatment with water, recovery of isopropanol and aluminium oxide/hydroxide or incineration of isopropanol
+| style="text-align:center;"| Melts and decomposes to give various ketones and isopropanol which may ignite; leaves behind alumina residue
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Increases level of aluminium from soil, corrosive and harmful to organisms
+|-
+| style="text-align:center;"| [[Aluminium nitrate]]
+| style="text-align:center;"| Pyrolysis; Aqueous ammonia or alkaline hydroxide solution
+| style="text-align:center;"| Gives off nitrogen oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Lowers soil pH, corrosive
+|-
+| style="text-align:center;"| [[Aluminium oxide]]
+| style="text-align:center;"| Not always required, can be dumped in trash
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Do not dump, may clog plumbing
+| style="text-align:center;"| Yes, but avoid dumping large amounts
+| style="text-align:center;"| Increases level of aluminium in soil, toxic to animals in large quantities
+|-
+| style="text-align:center;"| [[Aluminium phosphide]]
+| style="text-align:center;"| Diluted sodium hypochlorite, bleach
+| style="text-align:center;"| Burns in air, releasing fumes of phosphorus pentoxide and aluminium oxide, as well as traces of phosphine if any moisture is present
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Releases phosphine gas on contact with water, which is deadly to organisms
+|-
+| style="text-align:center;"| [[Aluminium sulfate]]
+| style="text-align:center;"| Any alkaline hydroxide
+| style="text-align:center;"| Releases sulfur oxides at high temperature
+| style="text-align:center;"| Dilute it first; neutralization with a base first is recommended
+| style="text-align:center;"| No
+| style="text-align:center;"| Increases the aluminium concentration in soil and water, lowers pH
+|-
+| style="text-align:center;"| [[Aluminium sulfide]]
+| style="text-align:center;"| Hydrogen peroxide, bleach
+| style="text-align:center;"| No
+| style="text-align:center;"| NO
+| style="text-align:center;"| NO
+| style="text-align:center;"| Releases hydrogen sulfide on contact with water, which is toxic to organisms
+|-
+| style="text-align:center;"| [[Amatol]]
+| style="text-align:center;"| '''VERY controlled''' incineration
+| style="text-align:center;"| Burns, may detonate in the presence of metallic impurities, like copper, brass
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| While ammonium nitrate is a good nitrogen source for plants, TNT is very harmful for wildlife
+|-
+| style="text-align:center;"| [[Aminoguanidine]]
+| style="text-align:center;"| Not required, can be discarded in any way
+| style="text-align:center;"| Pyrolysis gives nitrogen and carbon oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Aminoguanidinium bicarbonate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Pyrolysis done outside
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Little is known about its environmental impact
+|-
+| style="text-align:center;"| [[Aminoguanidinium nitrate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Careful and controlled pyrolysis
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Ammonal]]
+| style="text-align:center;"| '''VERY controlled''' incineration
+| style="text-align:center;"| Burns, may detonate in the presence of metallic impurities, like copper
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| While ammonium nitrate is a good nitrogen source for plants, the aluminium, TNT and other impurities present are harmful for wildlife
+|-
+| style="text-align:center;"| [[Ammonia]]
+| style="text-align:center;"| Oxidation, neutralization with acids
+| style="text-align:center;"| At high concentrations may generate nitrogen oxides
+| style="text-align:center;"| Not possible (gaseous), safe to pour (as solution)
+| style="text-align:center;"| Not possible (gaseous), safe to pour (as solution); Good nitrogen source for plants
+| style="text-align:center;"| Biodegradable
+|-
+| style="text-align:center;"| [[Ammonium acetate]]
+| style="text-align:center;"| Unnecessary
+| style="text-align:center;"| Releases [[acetonitrile]] fumes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Ammonium azide]]
+| style="text-align:center;"| Acidified sodium nitrite, nitrous acid
+| style="text-align:center;"| Slowly volatilizes and explodes at 400 °C releasing nitrogen, hydrogen and ammonia gasses
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Ammonium bicarbonate]]
+| style="text-align:center;"| Pyrolysis, hydroxides, acids
+| style="text-align:center;"| Decomposes on heating releasing carbon dioxide, ammonia fumes and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes!
+| style="text-align:center;"| Safe, good fertilizer (nitrogen source)
+|-
+| style="text-align:center;"| [[Ammonium bisulfate]]
+| style="text-align:center;"| Neutralize it with ammonia; can then poured down the drain
+| style="text-align:center;"| Decomposes to release sulfur oxides and ammonia
+| style="text-align:center;"| Yes, though recommended to neutralize first
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| Acidic, but once neutralized good nitrogen and sulfur source for plants
+|-
+| style="text-align:center;"| [[Ammonium bisulfite]]
+| style="text-align:center;"| While it can be diluted and poured down the drain, it's recommended to neutralize it first; hydrogen peroxide and ammonia can be used to safely neutralize it
+| style="text-align:center;"| Decomposes to release sulfur dioxide and ammonia
+| style="text-align:center;"| Yes, though recommended to neutralize first
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| Oxidation of aqueous ammonium bisulfite to bisulfate can reduce the amount of dissolved oxygen from water bodies and will lower water pH
+|-
+| style="text-align:center;"| [[Ammonium carbonate]]
+| style="text-align:center;"| Pyrolysis, hydroxides, acids
+| style="text-align:center;"| Decomposes on heating releasing carbon dioxide, ammonia fumes and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes!
+| style="text-align:center;"| Safe, good fertilizer (nitrogen source)
+|-
+| style="text-align:center;"| [[Ammonium chlorate]]
+| style="text-align:center;"| Controlled incineration in small batches
+| style="text-align:center;"| Decomposes on heating releasing nitrogen, water, oxygen and hydrogen chloride, sometimes explosively
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Chlorates are harmful to plants
+|-
+| style="text-align:center;"| [[Ammonium chloride]]
+| style="text-align:center;"| Soluble sulfate salts, base + other acid
+| style="text-align:center;"| Decomposes on heating releasing ammonia and hydrogen chloride
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, good fertilizer (nitrogen source); May prove unsuitable to chloride sensitive plants
+|-
+| style="text-align:center;"| [[Ammonium chromate]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid, at acidic pH
+| style="text-align:center;"| Decomposes, the famous volcano reaction, releasing nitrogen gas, water vapors, fine particulates of unburnt ammonium chromate, leaving behind Cr(III) oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
+|-
+| style="text-align:center;"| [[Ammonium dichromate]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH
+| style="text-align:center;"| Decomposes, the famous volcano reaction, releasing nitrogen gas, water vapors, fine particulates of unburnt ammonium dichromate, leaving behind Cr(III) oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
+|-
+| style="text-align:center;"| [[Ammonium dihydrogen phosphate]]
+| style="text-align:center;"| Not required; Slaked lime can be used to precipitate calcium phosphate
+| style="text-align:center;"| Decomposes on heating to release ammonia
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, good fertilizer (nitrogen and phosphorus source)
+|-
+| style="text-align:center;"| [[Ammonium dinitramide]]
+| style="text-align:center;"| Careful thermal decomposition
+| style="text-align:center;"| Decomposes on heating to release nitrogen, water and oxygen; may explode if heated too high
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Unknown
+| style="text-align:center;"| While it may be a good fertilizer, its environmental effects are unknown
+|-
+| style="text-align:center;"| [[Ammonium ferrocyanide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Decomposes in several steps, releasing ammonia, water, cyanogen, ferric oxide, in air
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Low toxicity, environmental effects unknown
+|-
+| style="text-align:center;"| [[Ammonium formate]]
+| style="text-align:center;"| Alkali hydroxide, carbonate, sulfate; heating in the presence of a base
+| style="text-align:center;"| Decomposes on heating to release ammonia, carbon monoxide, hydrogen cyanide and water
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| Dangerous to wildlife in large amounts
+|-
+| style="text-align:center;"| [[Ammonium heptamolybdate]]
+| style="text-align:center;"| Alkali hydroxide, carbonate, sulfate; Dilution, poured down the drain
+| style="text-align:center;"| Decomposes on heating to release ammonia, water, leaving behind MoO<sub>3</sub>
+| style="text-align:center;"| Yes, if strongly diluted
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dangerous to wildlife in large amounts
+|-
+| style="text-align:center;"| [[Ammonium hypophosphite]]
+| style="text-align:center;"| Diluted cooled hydrogen peroxide solution
+| style="text-align:center;"| Decomposes to ammonia and phosphine
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Harmful to organisms, especially aquatic ones
+|-
+| style="text-align:center;"| [[Ammonium iron(II) sulfate]]
+| style="text-align:center;"| Pyrolysis, hydroxides, carbonates
+| style="text-align:center;"| Emits [[ammonia]], sulfur oxides and water vapors, leaving behind iron oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes!
+| style="text-align:center;"| Safe, good fertilizer (nitrogen, iron and sulfur source); May cause algal bloom in water bodies however
+|-
+| style="text-align:center;"| [[Ammonium nitrate]]
+| style="text-align:center;"| Pyrolysis, hydroxides, carbonates
+| style="text-align:center;"| Emits [[nitrous oxide]], may explode if the temperature is too high
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes!
+| style="text-align:center;"| Safe, good fertilizer (nitrogen source); May cause algal bloom in water bodies however
+|-
+| style="text-align:center;"| [[Ammonium nitrite]]
+| style="text-align:center;"| Alkali hydroxides; strong dilution followed by heating; will slowly decompose even at room temperature, so you may leave it in a safe area and let it decompose
+| style="text-align:center;"| Decomposes or detonates, releasing nitrogen and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Decomposes quickly in environment, especially at low pH
+|-
+| style="text-align:center;"| [[Ammonium oxalate]]
+| style="text-align:center;"| Alkali hydroxide, carbonate, sulfate; pyrolysis in the presence of a base
+| style="text-align:center;"| Decomposes on heating to release ammonia, carbon monoxide, oximide, hydrogen cyanide and water vapors
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| May pose a threat to wildlife in large amounts; Occurs naturally in guano
+|-
+| style="text-align:center;"| [[Ammonium perchlorate]]
+| style="text-align:center;"| Reduction with metallic iron under UV light in the absence of air; Heating perchlorate at 200 °C with metallic iron for several hours
+| style="text-align:center;"| Decomposes to release nitrogen, water vapors, oxygen and hydrogen chloride
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Hazardous to aquatic life
+|-
+| style="text-align:center;"| [[Ammonium permanganate]]
+| style="text-align:center;"| Dissolution in water, followed by reduction with sulfur dioxide or sodium sulfite, thiosulfate or metabisulfite
+| style="text-align:center;"| Detonates above 60-110 °C, releasing nitrogen, water vapors and a smoke of manganese dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Strong oxidizer and explosive, hazardous for wildlife
+|-
+| style="text-align:center;"| [[Ammonium persulfate]]
+| style="text-align:center;"| Pyrolysis, hydrolysis, various reducing agents
+| style="text-align:center;"| Decomposes at 120 °C releasing sulfur and nitrogen oxides, oxygen and ammonia
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Strong oxidizer, hazardous for wildlife
+|-
+| style="text-align:center;"| [[Ammonium sulfamate]]
+| style="text-align:center;"| Not required; Strong dilution is sufficient
+| style="text-align:center;"| Decomposes on heating to release ammonia, sulfur dioxide, sulfuric acid vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Considered to be environmentally friendly due to its degradation to non-harmful residues
+|-
+| style="text-align:center;"| [[Ammonium sulfate]]
+| style="text-align:center;"| Not required; Calcium hydroxide can be used to precipitate calcium sulfate
+| style="text-align:center;"| Decomposes on heating to release ammonia, sulfur dioxide, sulfuric acid vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, good fertilizer (nitrogen and sulfur source); slightly lowers the soil pH
+|-
+| style="text-align:center;"| [[Ammonium sulfide]]
+| style="text-align:center;"| Hydrogen peroxide; hot sulfur dioxide
+| style="text-align:center;"| Decomposes releasing hydrogen sulfide and ammonia
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic for wildlife; Dangerous for the environment (DSD)
+|-
+| style="text-align:center;"| [[Ammonium sulfite]]
+| style="text-align:center;"| Not required, simply pour down the drain; Bleach or hydrogen peroxide can be used if desired
+| style="text-align:center;"| Decomposes to release sulfur dioxide
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oxidation of aqueous ammonium sulfite to sulfate can reduce the amount of dissolved oxygen from water bodies; otherwise, safe, used as fertilizer
+|-
+| style="text-align:center;"| [[Ammonium tetrafluoroborate]]
+| style="text-align:center;"| Precipitation with sodium hydroxide to less sodium fluorides
+| style="text-align:center;"| Emits very toxic fumes of hydrogen fluoride, nitrogen oxides and ammonia
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Harmful for organisms
+|-
+| style="text-align:center;"| [[Ammonium thiosulfate]]
+| style="text-align:center;"| Dilute then pour down the drain; Bleach or hydrogen peroxide can be used if desired
+| style="text-align:center;"| Decomposes to release sulfur dioxide, ammonia, water vapors
+| style="text-align:center;"| Yes, but dilute first
+| style="text-align:center;"| Yes, but dilute first
+| style="text-align:center;"| May be harmful for aquatic life; safe, used as fertilizer
+|-
+| style="text-align:center;"| [[Amygdalin]]
+| style="text-align:center;"| Bleach or hydrogen peroxide; poured down the drain
+| style="text-align:center;"| Decomposes to release hydrogen cyanide, carbon dioxide, ammonia, water vapors
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| May be harmful for aquatic life; safe, occurs naturally in small amounts
+|-
+| style="text-align:center;"| [[ANFO]]
+| style="text-align:center;"| '''VERY controlled''' incineration
+| style="text-align:center;"| Burns, almost never detonates
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| While ammonium nitrate is a good nitrogen source for plants, the fuel oil (FO) from its composition is harmful for wildlife
+|-
+| style="text-align:center;"| [[Aniline]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, soot, nitrogen and or nitrogen oxides and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to most wildlife
+|-
+| style="text-align:center;"| [[Anisole]]
+| style="text-align:center;"| Dilution with a solvent, followed by incineration; Oxidation with an oxidizing solution, like Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, soot and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potentially hazardous to wildlife
+|-
+| style="text-align:center;"| [[ANNM]]
+| style="text-align:center;"| '''VERY controlled''' incineration
+| style="text-align:center;"| Burns, almost never detonates
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| While ammonium nitrate is a good nitrogen source for plants, nitromethane and methanol may be harmful for wildlife
+|-
+| style="text-align:center;"| [[Anthocyanin]]
+| style="text-align:center;"| Not necessary
+| style="text-align:center;"| Gives off carbon oxides and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Anthracene]]
+| style="text-align:center;"| Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potentially toxic to wildlife, environmental effects unknown
+|-
+| style="text-align:center;"| [[Anthranilic acid]]
+| style="text-align:center;"| Dumped in trash, poured down the drain
+| style="text-align:center;"| Sublimes and decomposes, releasing carbon oxides, water vapors, soot, anilline
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, nutrient for organisms
+|-
+| style="text-align:center;"| [[Anthraquinone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Occurs naturally; effects on the environment unknown
+|-
+| style="text-align:center;"| [[Antimony(III) chloride]]
+| style="text-align:center;"| Precipitation with a base; Taken to waste disposal centers
+| style="text-align:center;"| Sublimes; Water solutions however will give off hydrogen chloride vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Lowers the soil pH, corrosive; Toxic to organisms
+|-
+| style="text-align:center;"| [[Antimony(III) oxide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Arabitol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity
+|-
+| style="text-align:center;"| [[Armstrong's mixture]]
+| style="text-align:center;"| Dissolution in water; Reduction with sodium thiosulfate, sulfite, metabisulfite
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potassium chlorate is a potent herbicide
+|-
+| style="text-align:center;"| [[Arsenic trichloride]]
+| style="text-align:center;"| Very careful neutralization with a base to non-volatile arsenic compounds, then taken to hazardous waste disposal centers
+| style="text-align:center;"| Evaporates, reacts with moisture in air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Asbestos]]
+| style="text-align:center;"| Pyrolysis; Oxalic acid and ultrasounds<ref> http://pubs.rsc.org/en/Content/ArticleLanding/2007/EM/b709571f#!divAbstract</ref>
+| style="text-align:center;"| At temperatures over 1000 °C it turns into harmless silicate glass
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to animals via inhalation
+|-
+| style="text-align:center;"| [[Ascaridole]]
+| style="text-align:center;"| Iron(II) sulfate
+| style="text-align:center;"| Burns releasing carbon dioxide, water vapors, soot; may explode at high concentrations and high temperatures
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Toxic to animals, parasitic worms, small animals; Occurs naturally
+|-
+| style="text-align:center;"| [[Ascorbic acid]]
+| style="text-align:center;"| Unnecessary
+| style="text-align:center;"| Releases carbon oxides and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Ash]]
+| style="text-align:center;"| Unnecessary
+| style="text-align:center;"| Not useful, already byproduct of incineration
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes
+| style="text-align:center;"| Safe, biodegradable, good source of potassium for plants; Coal ash however, is harmful and contains heavy metals and other impurities; Volcanic ash is abrasive and extremely harmful for the lungs
+|-
+| style="text-align:center;"| [[Asphalt]]
+| style="text-align:center;"| Dumping in trash
+| style="text-align:center;"| Will decompose at high temperatures, releasing carbon oxides, water vapors and soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Asphalt is harmful for wildlife
+|-
+| style="text-align:center;"| [[Atropine]]
+| style="text-align:center;"| Hydrolyzed and diluted; Can be destroyed using a strong oxidizing mixture for complete neutralization
+| style="text-align:center;"| At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Harmful and toxic to animals; occurs naturally
+|-
+| style="text-align:center;"| [[Barbituric acid]]
+| style="text-align:center;"| Poured down the drain or in trash; Can be destroyed using a strong oxidizing mixture for complete neutralization
+| style="text-align:center;"| At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot
+| style="text-align:center;"| Yes, but in small amounts
+| style="text-align:center;"| Yes, but in small amounts
+| style="text-align:center;"| Harmful to the environment in short term
+|-
+| style="text-align:center;"| [[Barium acetate]]
+| style="text-align:center;"| Addition of a soluble sulfate, such as sodium, potassium or magnesium sulfate
+| style="text-align:center;"| Decomposes releasing acetone, carbon dioxide, water, leaving behind barium carbonate
+| style="text-align:center;"| Neutralize with magnesium sulfate first
+| style="text-align:center;"| Neutralize with magnesium sulfate first
+| style="text-align:center;"| Very toxic for wildlife and environment
+|-
+| style="text-align:center;"| [[Barium azide]]
+| style="text-align:center;"| Acidified sodium nitrite, nitrous acid; precipitation of barium sulfate with sodium sulfate
+| style="text-align:center;"| Melts and explodes above 160 °C releasing nitrogen and barium oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Barium carbonate]]
+| style="text-align:center;"| Sulfuric acid; Resulting BaSO<sub>4</sub> can be dumped in trash
+| style="text-align:center;"| At very high temperatures decomposed to barium oxide and releases carbon dioxide
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| May react with acid rain to release soluble barium ions; Occurs naturally
+|-
+| style="text-align:center;"| [[Barium chlorate]]
+| style="text-align:center;"| Reduction with a reducing agent, such as sodium bisulfite, sodium metabisulfite, sodium sulfite, followed by oxidation in open air to sulfate; Addition of excess soluble sulfate to remove any soluble barium ions
+| style="text-align:center;"| Disproportionates into perchlorate and chloride when alone; Burns when mixed with a flammable material
+| style="text-align:center;"| No
+| style="text-align:center;"| No
+| style="text-align:center;"| Toxic for environment
+|-
+| style="text-align:center;"| [[Barium chloride]]
+| style="text-align:center;"| Addition of a soluble sulfate, such as sodium, potassium or magnesium sulfate
+| style="text-align:center;"| Not useful, melts at high temperatures
+| style="text-align:center;"| Neutralize with magnesium sulfate first
+| style="text-align:center;"| Neutralize with magnesium sulfate first
+| style="text-align:center;"| Toxic for environment
+|-
+| style="text-align:center;"| [[Barium chromate]]
+| style="text-align:center;"| Precipitation of barium, reduction of Cr(VI) to Cr(III)
+| style="text-align:center;"| Not useful, melts at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Carcinogenic, toxic for environment and wildlife
+|-
+| style="text-align:center;"| [[Barium ferrate]]
+| style="text-align:center;"| Sulfuric acid
+| style="text-align:center;"| Breaks down to barium and iron oxides, which require further disposal
+| style="text-align:center;"| No
+| style="text-align:center;"| No
+| style="text-align:center;"| Dangerous to wildlife in short term (oxidizer); Releases toxic barium ions in environment
+|-
+| style="text-align:center;"| [[Barium hydroxide]]
+| style="text-align:center;"| Dil. sulfuric acid, aq. sodium/potassium/magnesium sulfate
+| style="text-align:center;"| Breaks down to barium oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, due to the soluble barium ions
+|-
+| style="text-align:center;"| [[Barium hypophosphite]]
+| style="text-align:center;"| Diluted cooled hydrogen peroxide solution; addition of sodium sulfate
+| style="text-align:center;"| Decomposes to disodium phosphate and phosphine
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Harmful to organisms, especially aquatic ones; soluble barium compounds are toxic
+|-
+| style="text-align:center;"| [[Barium manganate]]
+| style="text-align:center;"| Sulfuric acid
+| style="text-align:center;"| Breaks down into barium and manganese oxides
+| style="text-align:center;"| Not advised
+| style="text-align:center;"| No
+| style="text-align:center;"| Toxic to wildlife in short term (oxidizer); Will release toxic barium ions in the environment
+|-
+| style="text-align:center;"| [[Barium nitrate]]
+| style="text-align:center;"| Sodium sulfate, potassium magnesium sulfate, sulfuric acid
+| style="text-align:center;"| Breaks down into barium oxide, releasing nitrogen dioxide and oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, due to the soluble barium ions
+|-
+| style="text-align:center;"| [[Barium nitrite]]
+| style="text-align:center;"| Precipitation with sodium sulfate; Oxidation to nitrate
+| style="text-align:center;"| Breaks down to barium oxide, oxygen and nitrogen oxides at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife in short term; nitrites are toxic
+|-
+| style="text-align:center;"| [[Barium oxide]]
+| style="text-align:center;"| Sulfuric acid, aq. sodium/potassium/magnesium sulfate
+| style="text-align:center;"| Not useful, converts to barium peroxide, then reverts back to barium oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, due to the soluble barium ions
+|-
+| style="text-align:center;"| [[Barium perchlorate]]
+| style="text-align:center;"| Reduction with metallic iron under UV light in the absence of air; precipitation to barium sulfate, using a soluble sulfate
+| style="text-align:center;"| Oxidizes flammable materials, burning them; alone decomposes above 505 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Do NOT DUMP
+| style="text-align:center;"| Very toxic to aquatic life
+|-
+| style="text-align:center;"| [[Barium permanganate]]
+| style="text-align:center;"| Hydrogen peroxide
+| style="text-align:center;"| Decomposes to manganese dioxide at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| The resulting manganese and barium oxides from the decomposition can be toxic if ingested by animals
+|-
+| style="text-align:center;"| [[Barium peroxide]]
+| style="text-align:center;"| Hydrolysis with dilute [[sulfuric acid]], followed by careful decomposition of the peroxide with iron oxide
+| style="text-align:center;"| Decomposes above 800 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Peroxides are deadly to small animals; soluble barium salts are toxic
+|-
+| style="text-align:center;"| [[Barium sulfate]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Decomposes at > 1600 °C
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to wildlife due to its poor solubility in water; occurs naturally as the mineral barite
+|-
+| style="text-align:center;"| [[Basic lead chromate]]
+| style="text-align:center;"| May be converted to lead(II) carbonate; should be taken to disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to environment due to lead and Cr(VI) content
+|-
+| style="text-align:center;"| [[Basic lead picrate]]
+| style="text-align:center;"| Careful and controlled destruction using an oxidizing solution; insoluble lead wastes should be taken to hazardous waste disposal centers
+| style="text-align:center;"| Explodes, releasing lead oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to all organisms; lead is a known neurotoxin
+|-
+| style="text-align:center;"| [[Beeswax]]
+| style="text-align:center;"| Not required, can be dumped in trash or ground
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; nourishment for some organisms
+|-
+| style="text-align:center;"| [[Benzaldehyde]]
+| style="text-align:center;"| Incineration; Oxidation to benzoic acid; Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Generates carbon oxides, water vapors, soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Low toxicity, but avoid releasing in environment
+|-
+| style="text-align:center;"| [[Benzene]]
+| style="text-align:center;"| Oxidation with [[Fenton's reagent]]; Incineration with afterburner incinerators
+| style="text-align:center;"| Generates dangerous combustion products
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Avoid releasing in environment
+|-
+| style="text-align:center;"| [[Benzocaine]]
+| style="text-align:center;"| Oxidation with [[Fenton's reagent]]; incineration; down the drain
+| style="text-align:center;"| Generates soot and various VOCs and PAHs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Not in large quantities
+| style="text-align:center;"| Avoid releasing in environment, effects unknown
+|-
+| style="text-align:center;"| [[Benzododecinium bromide]]
+| style="text-align:center;"| Dilute it with water
+| style="text-align:center;"| Decomposes
+| style="text-align:center;"| Dilute it first
+| style="text-align:center;"| Dilute it first
+| style="text-align:center;"| Unknown environmental effects
+|-
+| style="text-align:center;"| [[Benzoic acid]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| Breaks down to carbon oxides, water vapors, soot; may give off benzene vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not in large quantities
+| style="text-align:center;"| Decarboxylation with some compounds, such as ascorbic acid, may release traces of benzene; otherwise safe, occurs naturally
+|-
+| style="text-align:center;"| [[Benzonitrile]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to the environment
+|-
+| style="text-align:center;"| [[Benzophenone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to the environment
+|-
+| style="text-align:center;"| [[Benzoquinone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at high temperatures to yield carbon oxides, water vapors, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to the environment
+|-
+| style="text-align:center;"| [[Benzoyl chloride]]
+| style="text-align:center;"| Sodium hydroxide in cooled water/crushed ice or alcohol solution
+| style="text-align:center;"| Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen chloride fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic and corrosive for wildlife and aquatic life; lachrymator agent
+|-
+| style="text-align:center;"| [[Benzyl alcohol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Flammable, gives off carbon dioxide, soot and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful for wildlife and aquatic life in large concentrations
+|-
+| style="text-align:center;"| [[Benzyl chloride]]
+| style="text-align:center;"| Sodium hydroxide in water or alcohol solution
+| style="text-align:center;"| Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen chloride fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic and corrosive for wildlife and aquatic life; lachrymator agent
+|-
+| style="text-align:center;"| [[Benzyl cyanide]]
+| style="text-align:center;"| Sodium hydroxide in water or alcohol solution; neutralization of cyanide with bleach
+| style="text-align:center;"| Burns at high temperatures giving off carbon dioxide, water vapors, soot and hydrogen cyanide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful for wildlife
+|-
+| style="text-align:center;"| [[Benzylacetone]]
+| style="text-align:center;"| Excess bleach, excess NaOH
+| style="text-align:center;"| Breaks down releasing carbon dioxide, water vapors, soot, PAHs
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Relative safe, poses low toxicity
+|-
+| style="text-align:center;"| [[Benzylamine]]
+| style="text-align:center;"| Neutralization with an acid; mixed with a flammable solvent, followed by an incineration
+| style="text-align:center;"| Burns in air to release carbon dioxide, water vapor and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dangerous to aquatic life, albeit recognized as biodegradable
+|-
+| style="text-align:center;"| [[Bis(ethylenediamine)copper(II) perchlorate]]
+| style="text-align:center;"| Crystallize and ignite safely
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| No
+| style="text-align:center;"| Copper kills aquatic life and plant roots
+|-
+| style="text-align:center;"| [[Bismuth chloride]]
+| style="text-align:center;"| Reduced to bismuth metal; neutralized with a base then taken to disposal centers or recovered
+| style="text-align:center;"| Hydrolyzes and releases HCl fumes in open air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Hazardous for the environment in large quantities
+|-
+| style="text-align:center;"| [[Bismuth trioxide]]
+| style="text-align:center;"| Reduced to bismuth metal
+| style="text-align:center;"| Will oxidize anything (yes, platinum too) when molten
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May become hazardous for the environment in large quantities
+|-
+| style="text-align:center;"| [[Biuret]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| Gives off combustion gasses
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Biuret reagent]]
+| style="text-align:center;"| Neutralization with an acid
+| style="text-align:center;"| Gives off combustion gasses
+| style="text-align:center;"| Debatable
+| style="text-align:center;"| No
+| style="text-align:center;"| Copper and sodium ions pose toxicity to plants and animals
+|-
+| style="text-align:center;"| [[Black powder]]
+| style="text-align:center;"| Controlled incineration
+| style="text-align:center;"| Will burn to release a thick cloud of carbon dioxide and sulfur dioxide in open air; will detonate in a sealed container
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Its components are already used as fertilizers and the environmental effect are similar
+|-
+| style="text-align:center;"| [[Borax]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Dehydrates
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| Dangerous to small animals
+|-
+| style="text-align:center;"| [[Borazine]]
+| style="text-align:center;"| Careful hydrolysis in cold water, outside
+| style="text-align:center;"| Burns, releasing boric acid, boron nitride and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Boric acid resulted from hydrolysis is harmful to the fauna
+|-
+| style="text-align:center;"| [[Boric acid]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Will dehydrate it to [[boron trioxide]]
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| Dangerous to small animals
+|-
+| style="text-align:center;"| [[Borneol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Boron carbide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| Dangerous to small animals
+|-
+| style="text-align:center;"| [[Boron nitride]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| Dangerous to small animals
+|-
+| style="text-align:center;"| [[Boron trichloride]]
+| style="text-align:center;"| Careful neutralization by adding it in ice cold water, floowed by neutralization with a base
+| style="text-align:center;"| Evaporates, non-flammable, not effective
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Boron compounds tend to be harmful for wildlife
+|-
+| style="text-align:center;"| [[Boron trioxide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Not useful; may volatilize at high temperatures
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| In small quantities
+| style="text-align:center;"| Dangerous to small animals
+|-
+| style="text-align:center;"| [[Brass]]
+| style="text-align:center;"| Recycling; Traces of brass waste can be completely dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and zinc via electrowinning
+| style="text-align:center;"| Not useful; melts above 900 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Old brass may contain lead or nickel which is harmful to the environment
+|-
+| style="text-align:center;"| [[Bromoacetic acid]]
+| style="text-align:center;"| Neutralization with excess sodium hydroxide to sodium glycolate
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife
+|-
+| style="text-align:center;"| [[Bromocresol green]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| May be harmful to water bodies; environmental effects unknown
+|-
+| style="text-align:center;"| [[Bromocresol purple]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| May be harmful to water bodies; environmental effects unknown
+|-
+| style="text-align:center;"| [[Bromoform]]
+| style="text-align:center;"| Destruction with aqueous sodium hydroxide, which can be aided by methanol or acetone; Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Evaporates, should not be attempted indoors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to aquatic life at high concentrations, occurs naturally; May cause ozone depletion
+|-
+| style="text-align:center;"| [[Bromothymol blue]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, water vapors, sulfur oxides, bromine, soot
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| May be harmful to water bodies
+|-
+| style="text-align:center;"| [[Bromous acid]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, thiosulfate
+| style="text-align:center;"| Decomposes to bromine, bromate
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Bromous acid and its decomp. products are harmful
+|-
+| style="text-align:center;"| [[Bronze]]
+| style="text-align:center;"| Recycling; Traces of bronze waste can be completely dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and tin via electrowinning
+| style="text-align:center;"| Not useful; melts above 900 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Old bronze may contain arsenic, lead or nickel which is harmful to the environment
+|-
+| style="text-align:center;"| [[Butane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Yes (heavier than air)
+| style="text-align:center;"| May induce greenhouse effect
+|-
+| style="text-align:center;"| [[Butanol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Poses toxicity to wildlife, water bodies
+|-
+| style="text-align:center;"| [[Butyl acetate]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Poses toxicity to wildlife, water bodies
+|-
+| style="text-align:center;"| [[Butylated hydroxytoluene]]
+| style="text-align:center;"| Incineration, strong dilution
+| style="text-align:center;"| Will burn to release carbon dioxide, soot, VOCs, PAHs and water vapors
+| style="text-align:center;"| Strongly dilute it first
+| style="text-align:center;"| Strongly dilute it first
+| style="text-align:center;"| Harmful in large amounts
+|-
+| style="text-align:center;"| [[Butyric acid]]
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain
+| style="text-align:center;"| Flammable (high concentrations), no dangerous combustion products, though the smoke will have a rancid smell
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Safe, biodegradable; avoid dumping large amounts, dangerous to microfauna and water bodies
+|-
+| style="text-align:center;"| [[C-4]]
+| style="text-align:center;"| Very controlled incineration, done outside or in a kiln; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Displays toxicity to aquatic life; RDX can be degraded by the fungus Phanaerocheate chrysosporium; binders may be harmful for organisms
+|-
+| style="text-align:center;"| [[Cadmium acetate]]
+| style="text-align:center;"| Precipitation to cadmium sulfide, taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes at high temperatures to cadmium oxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic and dangerous to wildlife; Highly carcinogenic
+|-
+| style="text-align:center;"| [[Cadmium nitrate]]
+| style="text-align:center;"| Precipitation to cadmium sulfide, taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes at high temperatures to cadmium oxide and nitrogen dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic and dangerous to wildlife; Highly carcinogenic
+|-
+| style="text-align:center;"| [[Cadmium oxide]]
+| style="text-align:center;"| Precipitation to cadmium sulfide, taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes and sublimes at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic and dangerous to wildlife; Highly carcinogenic
+|-
+| style="text-align:center;"| [[Cadmium sulfate]]
+| style="text-align:center;"| Precipitation to cadmium sulfide, taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes at high temperatures to basic sulfate then cadmium oxide releasing sulfur oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic and dangerous to wildlife; Highly carcinogenic
+|-
+| style="text-align:center;"| [[Caesium azide]]
+| style="text-align:center;"| Sodium nitrite, nitrous acid; recycling of caesium
+| style="text-align:center;"| Breaks down to caesium metal and gives off nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Caesium chloride]]
+| style="text-align:center;"| Recycling; Taken to waste disposal centers
+| style="text-align:center;"| Not useful in any way
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Dangerous to organisms in very high concentrations; Caesium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Caesium hydroxide]]
+| style="text-align:center;"| Neutralization with any acid, carbon dioxide; recycling;
+| style="text-align:center;"| Not useful; highly corrosive when hot to glass, most common metals
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Dangerous to wildlife in short term (highly corrosive); Caesium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Caffeine]]
+| style="text-align:center;"| Not required; Can be dumped almost anywhere
+| style="text-align:center;"| Sublimes; Oxidation Generates carbon oxides, water vapors, soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Toxic to small animals, addictive to large organisms; biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Calcium acetate]]
+| style="text-align:center;"| Pyrolysis; Not always required
+| style="text-align:center;"| Decomposes to calcium carbonate and acetone at high temperature, which burns in an oxygen-rich atmosphere
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Biodegradable
+|-
+| style="text-align:center;"| [[Calcium bicarbonate]]
+| style="text-align:center;"| Any acid; not always required
+| style="text-align:center;"| Not useful; breaks down into calcium carbonate and carbon dioxide as the solution is heated
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Calcium carbide]]
+| style="text-align:center;"| Lots of water in an open space; low chain alcohols
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife in short term (reacts with water); may also release phosphine gas if carbide sample is impure
+|-
+| style="text-align:center;"| [[Calcium carbonate]]
+| style="text-align:center;"| Any acid; not always required
+| style="text-align:center;"| Not useful; breaks down into calcium oxide and carbon dioxide at high temperatures
+| style="text-align:center;"| Yes, as powder
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Calcium chloride]]
+| style="text-align:center;"| Not required; Any soluble carbonate
+| style="text-align:center;"| Not useful; May release some HCl fumes if wet
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Chloride ions may be harmful to certain plants
+|-
+| style="text-align:center;"| [[Calcium chromate]]
+| style="text-align:center;"| Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH
+| style="text-align:center;"| Decomposes, releasing oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are powerful carcinogens and very toxic to organisms
+|-
+| style="text-align:center;"| [[Calcium cyanamide]]
+| style="text-align:center;"| Lots of water
+| style="text-align:center;"| Not useful; Sublimes at very high temperatures
+| style="text-align:center;"| Yes, though not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Slowly hydrolyzes to urea, which is a good plant fertilizer
+|-
+| style="text-align:center;"| [[Calcium fluoride]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Unnecessary
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe to environment, occurs naturally
+|-
+| style="text-align:center;"| [[Calcium gluconate]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Will result in calcium carbonate and give off carbon dioxide and water vapors at high temperatures
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Not dangerous to wildlife
+|-
+| style="text-align:center;"| [[Calcium hydride]]
+| style="text-align:center;"| Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; water vapor can also be used; best performed in an open area
+| style="text-align:center;"| Decomposes to release hydrogen at very high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive to organisms, toxic to animals
+|-
+| style="text-align:center;"| [[Calcium hydroxide]]
+| style="text-align:center;"| Any acid
+| style="text-align:center;"| Will dehydrate to calcium oxide at high temperatures
+| style="text-align:center;"| Yes
+| style="text-align:center;"| No
+| style="text-align:center;"| Will "burn" grassland on contact
+|-
+| style="text-align:center;"| [[Calcium hypochlorite]]
+| style="text-align:center;"| Sodium bisulfite, sodium metabisulfite, sodium sulfite
+| style="text-align:center;"| Disproportionates into chlorate and chloride; will release chlorine and chlorine dioxide fumes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife
+|-
+| style="text-align:center;"| [[Calcium nitrate]]
+| style="text-align:center;"| Not required; soluble carbonate or sulfate solution can be used if necessary
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Good source of nitrogen for plants (fertilizer); May cause algal bloom in water bodies
+|-
+| style="text-align:center;"| [[Calcium oxide]]
+| style="text-align:center;"| Plenty of cold water, carbon dioxide, sodium/potassium bicarbonate
+| style="text-align:center;"| No
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Burns grass on contact
+|-
+| style="text-align:center;"| [[Calcium perchlorate]]
+| style="text-align:center;"| Mixing it with a combustible material, like sugar and incineration
+| style="text-align:center;"| Will decompose at high temperatures to release oxygen
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic to plants
+|-
+| style="text-align:center;"| [[Calcium propionate]]
+| style="text-align:center;"| Not required; can be poured down the drain or dumped in trash
+| style="text-align:center;"| Will decompose at high temperatures to release various ketones, carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Large quantities are harmful to water bodies and small animals
+|-
+| style="text-align:center;"| [[Calcium sulfate]]
+| style="text-align:center;"| Not required; soluble carbonate solution can be used if gypsum is not desired as waste product
+| style="text-align:center;"| Becomes anhydrous at high temperatures (drierite); decomposes to calcium oxide at very high temperatures
+| style="text-align:center;"| Yes, with lots and lots of water
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Anhydrous or hemihydrate form may burn grass on contact
+|-
+| style="text-align:center;"| [[Camphor]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Capsaicin]]
+| style="text-align:center;"| Not required at low concentrations; high concentrations may require an oxidizer, like bleach
+| style="text-align:center;"| Generates irritant smoke, carbon dioxide, soot and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Harmful for mammals at high concentrations, otherwise relative safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Carbon dioxide]]
+| style="text-align:center;"| Not required; Alkali hydroxides
+| style="text-align:center;"| Not necessary
+| style="text-align:center;"| Not possible (gaseous form), safe to pour (water solution)
+| style="text-align:center;"| Not possible (gaseous form), safe to pour (water solution)
+| style="text-align:center;"| Contributes to global warming
+|-
+| style="text-align:center;"| [[Carbon disulfide]]
+| style="text-align:center;"| Incineration, followed by scrubbing of sulfur dioxide (optional)
+| style="text-align:center;"| Burns in presence of oxygen, releasing carbon dioxide and sulfur dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Carbon monoxide]]
+| style="text-align:center;"| Oxidation with ozone; adsorbtion on activated charcoal; absorbtion in a solution of cuprous chloride in hydrochloric acid or cuprous chloride in ammonia<ref>http://www.google.com/patents/US2519284</ref><ref>[https://books.google.ro/books?id=MsD3CAAAQBAJ&pg=PA216&lpg=PA216&dq=cuprous+chloride+carbon+monoxide+scrubbing&source=bl&ots=snUrMF08pi&sig=eqxhNTgZf2z_PdchZuPfnM9Z-Xo&hl=ro&sa=X&ved=0ahUKEwj819fi-NvJAhXGuhoKHVJHDE8Q6AEIKzAD#v=onepage&q=cuprous%20chloride%20carbon%20monoxide%20scrubbing&f=false|Modern Chemical Technology and Emission Control, 2012, M.B. Hocking, p. 216]</ref>
+| style="text-align:center;"| Not useful; burns in the presence of oxygen and hydrogen
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Toxic to animals
+|-
+| style="text-align:center;"| [[Carbon tetrachloride]]
+| style="text-align:center;"| Sodium hydroxide excess; oxidation with Fenton's reagent
+| style="text-align:center;"| Results in phosgene in the presence of air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife, sinks at the bottom of water bodies
+|-
+| style="text-align:center;"| [[Carbonic acid]]
+| style="text-align:center;"| Any base
+| style="text-align:center;"| Releases carbon dioxide fumes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Toxic to aquatic life in large quantities
+|-
+| style="text-align:center;"| [[Carminic acid]]
+| style="text-align:center;"| Not always required, any method will do
+| style="text-align:center;"| Decomposes, releases combustion gasses, POCs and VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, occurs naturally
+|-
+| style="text-align:center;"| [[Cellulose]]
+| style="text-align:center;"| Any disposal method
+| style="text-align:center;"| Burns in air; decomposes to release carbon oxides, water vapors
+| style="text-align:center;"| Not recommended, may clog the plumbing
+| style="text-align:center;"| Yes, but avoid water bodies; bury it in ground instead
+| style="text-align:center;"| Safe, biodegradable; avoid dumping large amounts, as it poses choking hazard to most animals
+|-
+| style="text-align:center;"| [[Cerium(IV) oxide]]
+| style="text-align:center;"| Unnecessary, simply dump in trash; recycle
+| style="text-align:center;"| Releases absorbed water
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Effects unknown, may be toxic
+|-
+| style="text-align:center;"| [[Charcoal]]
+| style="text-align:center;"| Burning, dumping in ground
+| style="text-align:center;"| Results in carbon dioxide and ash
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| OH YES!
+| style="text-align:center;"| Unless it adsorbed dangerous volatile compounds or heavy metals, it can be used as a fertilizer
+|-
+| style="text-align:center;"| [[Chevreul's salt]]
+| style="text-align:center;"| Oxidation with hydrogen peroxide to sulfate, followed by precipitation or reduction of copper ions to metal or hydroxide/oxide
+| style="text-align:center;"| Gives off water vapors when heated and sulfur oxides at very high temperatures
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Little is known about its environmental effect; it is used as a fungicide and molluscicide<ref>http://www.drugfuture.com/chemdata/cuprous-sulfite.html</ref>
+|-
+| style="text-align:center;"| [[Chloral hydrate]]
+| style="text-align:center;"| Reducing with alkali hydroxide or magnesium, followed by incineration
+| style="text-align:center;"| Gives off hydrogen chloride fumes during burning/pyrolysis
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Chloric acid]]
+| style="text-align:center;"| Reducing with sodium sulfite, metabisulfite, bisulfite
+| style="text-align:center;"| Breaks down to perchloric acid and chlorine oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Strong oxidizing, toxic and corrosive to all wildlife and everything organic
+|-
+| style="text-align:center;"| [[Chlorine dioxide]]
+| style="text-align:center;"| Reduction with metabisulfite, sulfite or bisulfite
+| style="text-align:center;"| Evaporates and may explode
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic to all organisms, biocide
+|-
+| style="text-align:center;"| [[Chloroacetamide]]
+| style="text-align:center;"| Neutralization with excess sodium hydroxide to sodium glycolate products
+| style="text-align:center;"| Decomposes high temperatures, releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife, used as herbicide
+|-
+| style="text-align:center;"| [[Chloroacetic acid]]
+| style="text-align:center;"| Neutralization with excess sodium hydroxide to sodium glycolate
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife
+|-
+| style="text-align:center;"| [[Chloroacetone]]
+| style="text-align:center;"| Neutralization with a cooled solution of sodium or potassium hydroxide
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing extremely toxic and lachrymator fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife
+|-
+| style="text-align:center;"| [[Chloroauric acid]]
+| style="text-align:center;"| Reduction with a reducing agent, such as ascorbic acid, metabisulfite, sulfur dioxide
+| style="text-align:center;"| Gives off hydrogen chloride gases and leaves gold powder behind
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife; Best to try to recycle it
+|-
+| style="text-align:center;"| [[Chlorobenzene]]
+| style="text-align:center;"| Neutralization with Fenton's reagent; biodegradation with the bacterium Rhodococcus phenolicus
+| style="text-align:center;"| Gives off hydrogen chloride fumes during burning/pyrolysis, as well as various POCs and soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife; chlorobenzene can persist in soil for several months, in air for about 3.5 days, and in water for less than one day
+|-
+| style="text-align:center;"| [[Chlorobutanol]]
+| style="text-align:center;"| Reducing with alkali hydroxide or magnesium, followed by incineration
+| style="text-align:center;"| Gives off hydrogen chloride fumes during burning/pyrolysis
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Chloroform]]
+| style="text-align:center;"| Destruction with aqueous sodium hydroxide, which can be aided by methanol or acetone; Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Boils to form vapor, should not be attempted indoors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May cause ozone depletion, dangerous to aquatic life
+|-
+| style="text-align:center;"| [[Chloromethane]]
+| style="text-align:center;"| Release outside in atmosphere; Photolysis; Destruction with aqueous sodium hydroxide, oxidation with [[Fenton's reagent]] (for solutions)
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May cause ozone depletion, dangerous to land and aquatic life
+|-
+| style="text-align:center;"| [[Chloroplatinic acid]]
+| style="text-align:center;"| Reduction to platinum metal, followed by recovery of the precious metal
+| style="text-align:center;"| Breaks down to platinum(II) chloride, then platinum metal
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms
+|-
+| style="text-align:center;"| [[Chlorosulfuric acid]]
+| style="text-align:center;"| Very careful addition to crushed ice, dilution, followed by neutralization with a base
+| style="text-align:center;"| Boils and decomposes releasing sulfur trioxide and HCl fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Highly corrosive and toxic to organisms
+|-
+| style="text-align:center;"| [[Chlorous acid]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, thiosulfate
+| style="text-align:center;"| Decomposes to perchloric acid, hydrogen chloride, chlorine dioxide, oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Chlorous acid is a biocide
+|-
+| style="text-align:center;"| [[Chromic acid]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid
+| style="text-align:center;"| Decomposes to Cr<sub>2</sub>O<sub>3</sub>, releases oxygen and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
+|-
+| style="text-align:center;"| [[Chromium(III) chloride]]
+| style="text-align:center;"| Precipitation with a base; can be dumped in the trash, taken to a waste disposal facility or recycled
+| style="text-align:center;"| Melts and decomposes at high temperatures
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Moderate toxicity for the environment
+|-
+| style="text-align:center;"| [[Chromium(III) oxide]]
+| style="text-align:center;"| Not required; can be dumped in the trash
+| style="text-align:center;"| At temperatures ~1000 °C it will become inert against the action of most reagents
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Low reactivity, low danger for environment
+|-
+| style="text-align:center;"| [[Chromium(III) sulfate]]
+| style="text-align:center;"| Precipitation with a soluble hydroxide, followed by calcination to chromium(III) oxide
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Dangerous to wildlife in large amounts
+|-
+| style="text-align:center;"| [[Chromium(VI) oxide peroxide]]
+| style="text-align:center;"| Hydrolysis
+| style="text-align:center;"| Decomposes to harmless Cr(III)
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Due to its instability, it poses low danger to environment
+|-
+| style="text-align:center;"| [[Chromium trioxide]]
+| style="text-align:center;"| Dissolving it in water and reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH
+| style="text-align:center;"| Decomposes to Cr<sub>2</sub>O<sub>3</sub>, releases oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
+|-
+| style="text-align:center;"| [[Chromyl chloride]]
+| style="text-align:center;"| A supersaturated solution of a reducing agent, such as sodium sulfite, metabisulfite or thiosulfate at acidic pH
+| style="text-align:center;"| Not useful, boils off and fumes in contact with air moisture
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil; Carcinogenic
+|-
+| style="text-align:center;"| [[Citric acid]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate, alkaline-earth oxide
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| In wet environment it acts as fungi growth environment
+|-
+| style="text-align:center;"| [[Coal]]
+| style="text-align:center;"| Dumped in trash, incineration, taken to waste disposal centers
+| style="text-align:center;"| Gives off carbon dioxide and water vapors, leaving ash behind
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Some types can be
+| style="text-align:center;"| Coal ash is harmful for the environement
+|-
+| style="text-align:center;"| [[Cobalt(II) chloride]]
+| style="text-align:center;"| Any soluble hydroxide, carbonate
+| style="text-align:center;"| May give off hydrogen chloride fumes in the presence of water
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife; classified as "Substance of very high concern" in the EU
+|-
+| style="text-align:center;"| [[Cobalt(II) nitrate]]
+| style="text-align:center;"| Any soluble hydroxide, carbonate; Taken to disposal centers
+| style="text-align:center;"| Gives off nitrogen oxides fumes, leaving behind cobalt oxide residue
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, suspected carcinogen
+|-
+| style="text-align:center;"| [[Cobalt(II) sulfate]]
+| style="text-align:center;"| Any soluble hydroxide, carbonate; Taken to disposal centers
+| style="text-align:center;"| Gives off sulfur oxides fumes and sulfuric acid vapors, leaving behind cobalt oxide residue
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, suspected carcinogen
+|-
+| style="text-align:center;"| [[Cobalt (III) oxide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Cobalt is necessary for vitamin B12 production
+|-
+| style="text-align:center;"| [[Congo red]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Dangerous to environment, carcinogen
+|-
+| style="text-align:center;"| [[Copper chromite]]
+| style="text-align:center;"| Not always required; can be dumped in trash
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Unknown environmental effects
+|-
+| style="text-align:center;"| [[Copper citrate]]
+| style="text-align:center;"| Recover copper via reduction; Discard in trash
+| style="text-align:center;"| Decomposes to copper oxide and releases various gasses
+| style="text-align:center;"| Yes, in small quantities
+| style="text-align:center;"| Yes, in small quantities
+| style="text-align:center;"| High levels of copper are dangerous to wildlife
+|-
+| style="text-align:center;"| [[Copper oxychloride]]
+| style="text-align:center;"| Reduction with a iron or zinc to metallic copper
+| style="text-align:center;"| Gives off HCl fumes and leaves behind CuO slag
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Generally toxic to wildlife
+|-
+| style="text-align:center;"| [[Copper(I) acetylide]]
+| style="text-align:center;"| Addition of water, followed by careful addition of acid
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Copper ions may be harmful for wildlife and plants
+|-
+| style="text-align:center;"| [[Copper(I) chloride]]
+| style="text-align:center;"| Oxidizing with air/oxygen or H<sub>2</sub>O<sub>2</sub> to the more soluble CuCl<sub>2</sub>, followed by reduction to metallic copper with iron or zinc.
+| style="text-align:center;"| May hydrolyze in the presence of water and air to give off hydrogen chloride fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Oxidizes to copper(II) chloride in the presence of air, which is toxic and corrosive in water
+|-
+| style="text-align:center;"| [[Copper(I) oxide]]
+| style="text-align:center;"| Dissolving it in an acid, followed by reduction to metallic copper
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Generally considered harmful to wildlife
+|-
+| style="text-align:center;"| [[Copper(II) acetate]]
+| style="text-align:center;"| Reduction with iron or zinc to metallic copper, which is recycled
+| style="text-align:center;"| Gives off carbon oxides, water, acetic acid and acetone vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Unknown effects in the environment; presence of copper ions however is generally considered harmful
+|-
+| style="text-align:center;"| [[Copper(II) acetylsalicylate]]
+| style="text-align:center;"| Pyrolysis, incineration, oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides and water vapors, as well as soot and VOCs
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Unknown effects in the environment; presence of copper ions however is generally considered harmful
+|-
+| style="text-align:center;"| [[Copper(II) carbonate]]
+| style="text-align:center;"| Not required; can be neutralized with an acid and reduced to metallic copper
+| style="text-align:center;"| Will give off carbon dioxide fumes and leave CuO residues
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Copper ions are considered harmful to the environment
+|-
+| style="text-align:center;"| [[Copper(II) chloride]]
+| style="text-align:center;"| Precipitate as carbonate or reduce to copper metal using aluminium, iron or zinc
+| style="text-align:center;"| Loses water and hydrogen chloride, turns brown
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Yes, but far from any agricultural plants
+| style="text-align:center;"| Kills aquatic life and plant roots
+|-
+| style="text-align:center;"| [[Copper(II) hydroxide]]
+| style="text-align:center;"| Reduction to metallic copper
+| style="text-align:center;"| Loses water, yielding CuO
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Only as agricultural product
+| style="text-align:center;"| Copper ions are considered harmful to most wildlife
+|-
+| style="text-align:center;"| [[Copper(II) nitrate]]
+| style="text-align:center;"| Any alkali or ammonium hydroxide, carbonate
+| style="text-align:center;"| Gives off nitrogen oxide and nitric acid fumes, leaving copper oxides/hydroxides slag
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Copper ions may be harmful to wildlife; the nitrate group is a nitrogen source for plants
+|-
+| style="text-align:center;"| [[Copper(II) oxide]]
+| style="text-align:center;"| Dissolving it in an acid, followed by reduction to metallic copper
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Generally considered harmful to wildlife
+|-
+| style="text-align:center;"| [[Copper(II) perchlorate]]
+| style="text-align:center;"| Any alkali or carbonate, followed by reduction of perchlorate to chloride
+| style="text-align:center;"| Decomposes, releasing oxygen and leaving copper oxides/hydroxides slag
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Copper ions and perchlorates are known to be harmful to wildlife
+|-
+| style="text-align:center;"| [[Copper(II) phosphate]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| May decompose to copper oxide and phosphorus oxides at high temperatures, or elemental phosphorus in the presence of a reducing agent
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Due to low solubility, it has lower toxicity than other copper compounds
+|-
+| style="text-align:center;"| [[Copper(II) sulfate]]
+| style="text-align:center;"| Reduction with aluminium, iron or zinc to metallic copper
+| style="text-align:center;"| Loses water when heated, releases sulfur trioxide at high temperatures, leaving behind CuO
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Only as agricultural product
+| style="text-align:center;"| Shows toxicity to pests, wildlife
+|-
+| style="text-align:center;"| [[Crystal violet]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, water vapors, nitrogen oxides, soot
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| May be harmful to water bodies; possesses antibacterial, antifungal, antihelminthic, antitrypanosomal, antiangiogenic, and antitumor properties
+|-
+| style="text-align:center;"| [[Curcumin]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Releases carbon oxides and water vapors, as well as soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Cyanogen]]
+| style="text-align:center;"| Incineration outside; oxidation with an oxidizing solution
+| style="text-align:center;"| Flammable, burns in the presence of oxygen to release carbon dioxide and nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly to wildlife
+|-
+| style="text-align:center;"| [[Cyanoguanidine]]
+| style="text-align:center;"| Not required; Can be poured into the ground
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, soot, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low environmental impact, used as fertilizer
+|-
+| style="text-align:center;"| [[Cyanuric acid]]
+| style="text-align:center;"| Not required; Any base, carbonate, bicarbonate, alkaline-earth oxide can be used if desired
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low environmental impact
+|-
+| style="text-align:center;"| [[Cyclam]]
+| style="text-align:center;"| Oxidation with Fenton's reagent or piranha solution
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Considered to be harmful, but little is known about its toxicity
+|-
+| style="text-align:center;"| [[Cyclen]]
+| style="text-align:center;"| Oxidation with Fenton's reagent or piranha solution
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Considered to be harmful, but little is known about its toxicity
+|-
+| style="text-align:center;"| [[Cyclohexane]]
+| style="text-align:center;"| Dilution with a flammable solvent and incineration; oxidation with Fenton's reagent
+| style="text-align:center;"| Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Cyclohexanol]]
+| style="text-align:center;"| Dilution with a flammable solvent and incineration; oxidation with Fenton's reagent
+| style="text-align:center;"| Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Cyclohexanone]]
+| style="text-align:center;"| Dilution with a flammable solvent and incineration
+| style="text-align:center;"| Flammable, burns in the presence of oxygen to release carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Low toxicity to organisms, but may be harmful to wildlife
+|-
+| style="text-align:center;"| [[Decalin]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Ignites at high temperatures and generates carbon oxides, water vapors, carbon monoxide, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to wildlife and water bodies
+|-
+| style="text-align:center;"| [[Decane]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Ignites in air, gives off carbon dioxide and water vapors, soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life and organisms
+|-
+| style="text-align:center;"| [[Devarda's alloy]]
+| style="text-align:center;"| Dissolved in acid, followed by recovery of copper and zinc<br>Dumped in trash
+| style="text-align:center;"| Melts between 490 to 560 °C
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Dextrin]]
+| style="text-align:center;"| Any disposal method
+| style="text-align:center;"| Decomposes to release carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Diatomaceous earth]]
+| style="text-align:center;"| Any disposal method
+| style="text-align:center;"| Not effective
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Toxic to small animals, otherwise relative safe
+|-
+| style="text-align:center;"| [[Diborane]]
+| style="text-align:center;"| Burned outside or in an incinerator; hydrolysis in water
+| style="text-align:center;"| Self-ignites in air above 38 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Boron compounds tend to be harmful for wildlife
+|-
+| style="text-align:center;"| [[Dichlorine heptoxide]]
+| style="text-align:center;"| Careful dissolving in cold water/crushed ice, followed by neutralization with base; Reduction with metabisulfite, sulfite or bisulfite
+| style="text-align:center;"| Evaporates and may explode
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all organisms, corrosive, toxic
+|-
+| style="text-align:center;"| [[Dichloroacetic acid]]
+| style="text-align:center;"| Neutralization and dehalogenation with excess sodium hydroxide; Reduction with metallic powders to acetic acid
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife
+|-
+| style="text-align:center;"| [[Dichloromethane]]
+| style="text-align:center;"| Destruction with aqueous sodium hydroxide, iron can also be used; Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Boils to form vapor; pyrolysis at high temperatures yielding chlorine, hydrochloric acid and carbon monoxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May cause ozone depletion, dangerous to aquatic life
+|-
+| style="text-align:center;"| [[Dicyanoacetylene]]
+| style="text-align:center;"| Incineration done outside
+| style="text-align:center;"| Extremely flammable, burns to release carbon dioxide, nitrogen gas and lots of heat
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May be harmful to wildlife
+|-
+| style="text-align:center;"| [[Diethanolamine]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Yields carbon oxides, water vapor at high temperatures
+| style="text-align:center;"| Strongly diluted
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Toxic to organisms, dangerous to aquatic and soil life
+|-
+| style="text-align:center;"| [[Diethyl ether]]
+| style="text-align:center;"| Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
+| style="text-align:center;"| Extremely flammable, burns to release carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to animals
+|-
+| style="text-align:center;"| [[Difluoroacetic acid]]
+| style="text-align:center;"| Neutralization with base, bacterial degradation, decarboxylation, taken to waste disposal centers
+| style="text-align:center;"| Decomposes, releases combustion gasses, HF, methylene fluoride
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Displays moderate toxicity to most organisms
+|-
+| style="text-align:center;"| [[Diisopropyl ether]]
+| style="text-align:center;"| Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
+| style="text-align:center;"| Extremely flammable, burns to release carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to animals
+|-
+| style="text-align:center;"| [[Dimethyl dioxane]]
+| style="text-align:center;"| Incineration (no peroxides); Acid-catalyzed hydrolysis with sulfuric acid; If peroxides are present, addition of excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
+| style="text-align:center;"| Incineration produces carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Unknown, possibly carcinogenic
+|-
+| style="text-align:center;"| [[Dimethyl ether]]
+| style="text-align:center;"| Incineration; can be released in open air
+| style="text-align:center;"| Extremely flammable, burns to release carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Low toxicity to wildlife
+|-
+| style="text-align:center;"| [[Dimethyl sulfate]]
+| style="text-align:center;"| Addition in large amounts of water or crushed ice, followed by addition of aq. alkali
+| style="text-align:center;"| Decomposes to dimethyl sulfate, DO NOT CALCINATE
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive and toxic
+|-
+| style="text-align:center;"| [[Dimethyl sulfoxide]]
+| style="text-align:center;"| Mixed with a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent if it has too much water
+| style="text-align:center;"| Results in carbon oxides, water vapors and sulfur dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Waste water bacteria breaks it down into dimethyl sulfide, which is slightly toxic and has a strong disagreeable odor
+|-
+| style="text-align:center;"| [[Dimethylamine]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in air, giving off carbon dioxide, nitrogen and water vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
+|-
+| style="text-align:center;"| [[Dimethyldioxirane]]
+| style="text-align:center;"| Ferrous sulfate, sodium metabisulfite, bleach
+| style="text-align:center;"| Diluted solutions will break down harmlessly
+| style="text-align:center;"| Safe, though best to neutralize it first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Harmful for most organisms; acetone has low toxicity
+|-
+| style="text-align:center;"| [[Dimethylformamide]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Dimethylzinc]]
+| style="text-align:center;"| '''Very''' controlled hydrolysis, using alcohols
+| style="text-align:center;"| Ignites in open air; Decomposes above 200 °C
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Zinc oxide fumes are harmful
+|-
+| style="text-align:center;"| [[Dinitrogen pentoxide]]
+| style="text-align:center;"| Addition to large amounts of cold water; neutralization with a base
+| style="text-align:center;"| Decomposes giving off nitrogen oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very corrosive to all organisms, may cause fires or explosions
+|-
+| style="text-align:center;"| [[Dinitrogen tetroxide]]
+| style="text-align:center;"| Addition to large amounts of cold water; neutralization with a base
+| style="text-align:center;"| Decomposes to nitrogen dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very corrosive to all organisms, may cause fires or explosions
+|-
+| style="text-align:center;"| [[Dinitrogen trioxide]]
+| style="text-align:center;"| Addition to large amounts of cold water; neutralization with a base
+| style="text-align:center;"| Decomposes to nitrogen dioxide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very corrosive to all organisms, may cause fires or explosions
+|-
+| style="text-align:center;"| [[Diphenylamine]]
+| style="text-align:center;"| Dissolved in a flammable solvent and burned in an incinerator; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, soot, nitrogen and or nitrogen oxides and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to most wildlife
+|-
+| style="text-align:center;"| [[Diphenylmethanol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Flammable, gives off carbon dioxide, PAHs, soot and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potentially harmful for wildlife and aquatic life in large concentrations
+|-
+| style="text-align:center;"| [[Dipicolinic acid]]
+| style="text-align:center;"| Mixed with a more flammable solvent and followed by incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Dipotassium phosphate]]
+| style="text-align:center;"| Not required; Excess slaked lime can be used to precipitate calcium phosphate
+| style="text-align:center;"| Decomposes on heating at high temperatures to release water vapors, leaving a residue of potassium and phosphorus oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Oh yes
+| style="text-align:center;"| Safe, good fertilizer (potassium and phosphorus source)
+|-
+| style="text-align:center;"| [[Disulfur dichloride]]
+| style="text-align:center;"| Slaked lime or any other base, carbonate or bicarbonate
+| style="text-align:center;"| Boils off
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic and corrosive
+|-
+| style="text-align:center;"| [[Di-tert-butyl ether]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Extremely flammable, burns to release carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Displays toxicity to wildlife
+|-
+| style="text-align:center;"| [[Dynamite]]
+| style="text-align:center;"| "Wetting" with a solvent, extraction of nitro and very careful neutralization of it; addition of more diatomaceous earth to further absorb the nitro
+| style="text-align:center;"| Will explode
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Explosive hazard; otherwise good nitrogen source for plants
+|-
+| style="text-align:center;"| [[Dysprosium(III) nitrate]]
+| style="text-align:center;"| Precipitation with a base; recycling; separation can be done with a magnet, if no other magnetic salts are present
+| style="text-align:center;"| Decomposes to dysprosium(III) oxide, releases nitrogen dioxide
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Effects unknown, may be toxic
+|-
+| style="text-align:center;"| [[Eosin Y]]
+| style="text-align:center;"| Not always required, any method will do
+| style="text-align:center;"| Decomposes, releases combustion gasses, POCs and VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Unknown environmental effects
+|-
+| style="text-align:center;"| [[Erbium(III) oxide]]
+| style="text-align:center;"| Unnecessary, simply dump in trash
+| style="text-align:center;"| Releases absorbed water or carbon dioxide
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Effects unknown, may be toxic
+|-
+| style="text-align:center;"| [[Eriochrome Black T]]
+| style="text-align:center;"| Poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon and sulfur oxides, nitrogen, water, soot, VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Environmental effects are currently unknown
+|-
+| style="text-align:center;"| [[Erythritol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity
+|-
+| style="text-align:center;"| [[Erythritol tetranitrate]]
+| style="text-align:center;"| Cooled aqueous solution of excess sodium hydroxide
+| style="text-align:center;"| Detonates at temperatures > 160 °C
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| In small amounts
+| style="text-align:center;"| Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
+|-
+| style="text-align:center;"| [[Ethane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapors
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Contributes to greenhouse effect
+|-
+| style="text-align:center;"| [[Ethanol]]
+| style="text-align:center;"| Not always required; Incineration
+| style="text-align:center;"| Yields carbon oxides, water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Deadly to small animals on direct contact, dangerous to aquatic and soil life
+|-
+| style="text-align:center;"| [[Ethanolamine]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Yields carbon oxides, water vapor at high temperatures
+| style="text-align:center;"| Strongly diluted
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Toxic to organisms, dangerous to aquatic and soil life
+|-
+| style="text-align:center;"| [[Ethenone]]
+| style="text-align:center;"| Absorbtion in aq. basic solution
+| style="text-align:center;"| Burns, releasing carbon oxides, water vapors
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly to all living things, dangerous to aquatic and soil life, as it acidifies water
+|-
+| style="text-align:center;"| [[Ethyl acetate]]
+| style="text-align:center;"| Sodium hydroxide; Incineration
+| style="text-align:center;"| Combustion in the presence of air
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic to aquatic life
+|-
+| style="text-align:center;"| [[Ethyl cyanoacrylate]]
+| style="text-align:center;"| Incineration; dumped in trash
+| style="text-align:center;"| Combustion in the presence of air
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Ethyl formate]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Hazardous to environment in large amounts
+|-
+| style="text-align:center;"| [[Ethyl iodide]]
+| style="text-align:center;"| Alkali solution, followed by sodium thiosulfate to remove any free iodine
+| style="text-align:center;"| Decomposes to release iodine fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife in high concentrations
+|-
+| style="text-align:center;"| [[Ethyl nitrate]]
+| style="text-align:center;"| Diluted alkali solution, recommended to be cooled first to prevent possible explosion
+| style="text-align:center;"| Will lead to explosion
+| style="text-align:center;"| No
+| style="text-align:center;"| No
+| style="text-align:center;"| Dangerous to wildlife
+|-
+| style="text-align:center;"| [[Ethylamine]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in air, giving off carbon dioxide, nitrogen and water vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
+|-
+| style="text-align:center;"| [[Ethylene]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapors
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Contributes to greenhouse effect
+|-
+| style="text-align:center;"| [[Ethylene glycol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and various volatile componds
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms, dangerous to aquatic life
+|-
+| style="text-align:center;"| [[Ethylene glycol dinitrate]]
+| style="text-align:center;"| Sodium hydroxide, followed by incineration
+| style="text-align:center;"| Detonation
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Poses threat to animals, weak nitrogen source for plants
+|-
+| style="text-align:center;"| [[Ethylene oxide]]
+| style="text-align:center;"| Incineration; Hydrolysis
+| style="text-align:center;"| Burns, giving off combustion gases
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and dangerous for all wildlife
+|-
+| style="text-align:center;"| [[Ethylenediamine]]
+| style="text-align:center;"| Neutralization with sulfuric acid; mixed with a flammable solvent, followed by an incineration; oxidation with potassium permanganate, followed by addition of sodium bisulfite, and neutralization with sodium hydroxide
+| style="text-align:center;"| Burns in air to release carbon dioxide, water vapor and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dangerous to aquatic life
+|-
+| style="text-align:center;"| [[Ethylenediaminetetraacetic acid]]
+| style="text-align:center;"| Poured down the drain if not bonded with heavy metals; otherwise taken to waste disposal centers
+| style="text-align:center;"| Breaks down to give carbon oxides, water vapor, various amines, soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Displays some toxicity to many organisms lifeforms, dangerous to water bodies; can be broken down slowly by various microorganisms
+|-
+| style="text-align:center;"| [[Ethylenedinitramine]]
+| style="text-align:center;"| Incineration, done outside; Oxidation with Fenton's reagent
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Little information is given on its environmental impact
+|-
+| style="text-align:center;"| [[Eucalyptol]]
+| style="text-align:center;"| Incineration if desired; not always required, can be poured down the drain
+| style="text-align:center;"| Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally in various plants, like eucalyptus, peppermint, etc.
+|-
+| style="text-align:center;"| [[Fehling's solution]]
+| style="text-align:center;"| Precipitate copper with hydroxide/phosphate, recycle or safely dispose of; tatrate can be disposed of in any method
+| style="text-align:center;"| Decomposes, releases combustion gasses, leaves behind copper, sodium and potassium carbonate slag
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not in large quantities
+| style="text-align:center;"| Too much copper is dangerous for animals
+|-
+| style="text-align:center;"| [[Ferrocerium]]
+| style="text-align:center;"| Recycled<br>Dumped in trash
+| style="text-align:center;"| Melts
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Possible, though not recommended
+| style="text-align:center;"| Lanthanides show low toxicity to organisms
+|-
+| style="text-align:center;"| [[Ferroin]]
+| style="text-align:center;"| Dilution then poured down the drain
+| style="text-align:center;"| Decomposes
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Phenanthroline is harmful to environment in high concentration
+|-
+| style="text-align:center;"| [[Ferulic acid]]
+| style="text-align:center;"| Mixed with a more flammable solvent and followed by incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Fluorene]]
+| style="text-align:center;"| Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Possibly toxic to animals, environmental effects unknown
+|-
+| style="text-align:center;"| [[Fluorenol]]
+| style="text-align:center;"| Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life, like invertebrates and algae; eugeroic in humans and mice
+|-
+| style="text-align:center;"| [[Fluorenone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Possibly harmful to the environment
+|-
+| style="text-align:center;"| [[Fluorescein]]
+| style="text-align:center;"| Not always required, any method will do
+| style="text-align:center;"| Decomposes, releases combustion gasses, POCs and VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Unknown effects
+|-
+| style="text-align:center;"| [[Fluoroacetic acid]]
+| style="text-align:center;"| Decarboxylation, bacterial degradation
+| style="text-align:center;"| Decomposes, releases combustion gasses, HF, methyl fluoride
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Extremely toxic and deadly to insects and mammals, less so to reptiles and birds
+|-
+| style="text-align:center;"| [[Fluoroboric acid]]
+| style="text-align:center;"| Slowly and carefully added to cold calcium hydroxide solution
+| style="text-align:center;"| Decomposes in moist air releasing hydrogen fluoride
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely corrosive and toxic to all organisms
+|-
+| style="text-align:center;"| [[Fluorosulfuric acid]]
+| style="text-align:center;"| Slowly and carefully added to cold water or crushed ice, followed by neutralization with a base
+| style="text-align:center;"| Decomposes in moist air releasing sulfuric acid and hydrogen fluoride
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely corrosive and toxic to all organisms
+|-
+| style="text-align:center;"| [[Formaldehyde]]
+| style="text-align:center;"| Sodium hydroxide
+| style="text-align:center;"| Boils off
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Yes, but only in some places, like farm land
+| style="text-align:center;"| Toxic to small animals, carcinogenic
+|-
+| style="text-align:center;"| [[Formamide]]
+| style="text-align:center;"| Dilution in a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon monoxide, dioxide, ammonia, hydrogen cyanide
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, teratogen
+|-
+| style="text-align:center;"| [[Formic acid]]
+| style="text-align:center;"| Sodium hydroxide
+| style="text-align:center;"| Gives off carbon monoxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly to insects and aquatic life; reason why it's used to kill varroa
+|-
+| style="text-align:center;"| [[FOX-7]]
+| style="text-align:center;"| Incineration, done outside; Dilution, followed by addition of base, then neutralization of products
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Little information about its environmental impact is available
+|-
+| style="text-align:center;"| [[Fructose]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Will decompose to caramel
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Non-toxic to environment, nourishment for many organisms
+|-
+| style="text-align:center;"| [[Fumaric acid]]
+| style="text-align:center;"| Not always required, can be dumped in trash
+| style="text-align:center;"| Decomposes releasing acrid smoke, carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Source of food for some organisms
+|-
+| style="text-align:center;"| [[Furan‎]]
+| style="text-align:center;"| Dilution with a flammable solvent followed by incineration
+| style="text-align:center;"| Gives off carbon oxides and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to wildlife, carcinogenic
+|-
+| style="text-align:center;"| [[Furfural‎]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon oxides and water vapor
+| style="text-align:center;"| Debatable
+| style="text-align:center;"| Debatable
+| style="text-align:center;"| Low toxicity to wildlife
+|-
+| style="text-align:center;"| [[Galactitol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity
+|-
+| style="text-align:center;"| [[Gasoline]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burning gives combustion gasses as well as soot, carbon monoxide and various VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife; very dangerous for aquatic life
+|-
+| style="text-align:center;"| [[Gelatin]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; nourishment for many organisms
+|-
+| style="text-align:center;"| [[Gelignite]]
+| style="text-align:center;"|
+| style="text-align:center;"| Will explode
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Explosive hazard; otherwise good nitrogen source for plants
+|-
+| style="text-align:center;"| [[Glucose]]
+| style="text-align:center;"| Not required; can be disposed in any way
+| style="text-align:center;"| Will decompose to caramel and carbon if heated too long
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Non-toxic to environment, nourishment for many organisms
+|-
+| style="text-align:center;"| [[Glutamic acid]]
+| style="text-align:center;"| Not required; can be disposed in any way
+| style="text-align:center;"| Will char and release carbon dioxide, water vapors and nitrogen
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Non-toxic to environment, nourishment for many organisms
+|-
+| style="text-align:center;"| [[Glycerol]]
+| style="text-align:center;"| Not required; Incineration
+| style="text-align:center;"| Pyrolysis gives acrolein
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Glycine]]
+| style="text-align:center;"| Not required; can be disposed in any way
+| style="text-align:center;"| Will char and release carbon dioxide, water vapors and nitrogen
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Non-toxic to environment, nourishment for many organisms
+|-
+| style="text-align:center;"| [[Glycolic acid]]
+| style="text-align:center;"| Not required; can be disposed in any way
+| style="text-align:center;"| Will char and release carbon dioxide, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low-toxicity for the environment
+|-
+| style="text-align:center;"| [[Glycoluril]]
+| style="text-align:center;"| Not required; can be disposed in any way
+| style="text-align:center;"| Will char and release carbon dioxide, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low-toxicity for the environment
+|-
+| style="text-align:center;"| [[Glyoxal]]
+| style="text-align:center;"| Incineration; Precipitation with amines (urea, guanidine, etc.)
+| style="text-align:center;"| Burns, releasing carbon oxides and water vapors; some will evaporate when heated
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to the wildlife, suspected carcinogen
+|-
+| style="text-align:center;"| [[Guanidine]]
+| style="text-align:center;"| Not required, can be discarded in any way
+| style="text-align:center;"| Pyrolysis gives nitrogen and carbon oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable
+|-
+| style="text-align:center;"| [[Guanidinium bicarbonate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Pyrolysis done outside
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Guanidinium carbonate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Pyrolysis done outside
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Guanidinium chloride]]
+| style="text-align:center;"| Not required; Careful and controlled pyrolysis
+| style="text-align:center;"| Pyrolysis gives nitrogen, water, chlorine and carbon/nitrogen oxides
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants; Guanidine derivates occur in guano; Chlorides however are harmful for plants in large amounts
+|-
+| style="text-align:center;"| [[Guanidinium nitrate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Careful and controlled pyrolysis
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Guanidinium perchlorate]]
+| style="text-align:center;"| Careful and controlled pyrolysis<br>Reduction with metallic iron under UV light, in low oxygen
+| style="text-align:center;"| Pyrolysis gives nitrogen, water, chlorine and carbon/nitrogen oxides; may explode at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Perchlorates are harmful for the environment
+|-
+| style="text-align:center;"| [[Guanidinium sulfate]]
+| style="text-align:center;"| Not required, can be dumped in ground; Pyrolysis done outside
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen/sulfur oxides
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen and sulfur source for plants; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Guar gum]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; nourishment for many organisms
+|-
+| style="text-align:center;"| [[Gum arabic]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; nourishment for many organisms
+|-
+| style="text-align:center;"| [[Haematoxylin]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Gives off carbon oxides, water vapor and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Hematein]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Gives off carbon oxides, water vapor and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe
+|-
+| style="text-align:center;"| [[Heptane]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life and organisms
+|-
+| style="text-align:center;"| [[Hexamethylene triperoxide diamine]]
+| style="text-align:center;"| Adding a mixture of [[zinc sulfate]], [[copper(II) chloride]] with Zn and Cu powder in a 5:5:1 ratio to the peroxide solution, in the presence of small amounts of [[sulfuric acid]]
+| style="text-align:center;"| Do not use heat, as it will lead to detonation
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Debatable
+| style="text-align:center;"| Slowly breaks down to harmless products
+|-
+| style="text-align:center;"| [[Hexamethylphosphoramide]]
+| style="text-align:center;"| Treatment with hydrochloric acid; dilution of resulting products, followed by disposal
+| style="text-align:center;"| Breaks down yielding phosphine, phosphorus oxides and nitrogen oxides.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Carcinogenic
+|-
+| style="text-align:center;"| [[Hexamine]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burning in air yields carbon oxides, water vapor, nitrogen; Pyrolysis yields [[formaldehyde]], carbon oxides, ammonia and nitrogen fumes, HCN (t > 800°C)
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Nitrogen source for plants
+|-
+| style="text-align:center;"| [[Hexane]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Results in carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life
+|-
+| style="text-align:center;"| [[Hexanitrohexaazaisowurtzitane]]
+| style="text-align:center;"| Incineration, done outside
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Little information about its environmental impact
+|-
+| style="text-align:center;"| [[HMX]]
+| style="text-align:center;"| Incineration, done outside; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Displays moderate toxicity to aquatic life; can be degraded by some microorganisms
+|-
+| style="text-align:center;"| [[Holmium citrate]]
+| style="text-align:center;"| Recycling
+| style="text-align:center;"| Gives off carbon dioxide and water vapors, leaving holmium(III) oxide behind
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Low toxicity to wildlife
+|-
+| style="text-align:center;"| [[Hydrazine]]
+| style="text-align:center;"| Diluted solution of calcium hypochlorite
+| style="text-align:center;"| Gives off toxic fumes; may lead to detonation if temperature is too high
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life
+|-
+| style="text-align:center;"| [[Hydrazine hydrochloride]]
+| style="text-align:center;"| Diluted solution of calcium hypochlorite
+| style="text-align:center;"| Gives off toxic fumes; may lead to detonation if temperature is too high
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life
+|-
+| style="text-align:center;"| [[Hydrazine nitrate]]
+| style="text-align:center;"| Diluted in lots of water, followed by slow addition of a solution of calcium hypochlorite
+| style="text-align:center;"| Decomposes, gives off toxic fumes; may lead to detonation if temperature is too high
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life
+|-
+| style="text-align:center;"| [[Hydrazine perchlorate]]
+| style="text-align:center;"| Diluted in lots of water, followed by slow addition of a solution of calcium hypochlorite
+| style="text-align:center;"| Decomposes, gives off toxic fumes; may lead to detonation if temperature is too high
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life
+|-
+| style="text-align:center;"| [[Hydrazine sulfate]]
+| style="text-align:center;"| Diluted solution of calcium hypochlorite
+| style="text-align:center;"| Gives off toxic fumes; may lead to detonation if temperature is too high
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all life
+|-
+| style="text-align:center;"| [[Hydrazoic acid]]
+| style="text-align:center;"| Sodium nitrite or nitrous acid
+| style="text-align:center;"| Will lead to detonation for concentrated solutions
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to all life
+|-
+| style="text-align:center;"| [[Hydrobromic acid]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate; sodium thiosulfate can also be used
+| style="text-align:center;"| Boils off the acid, resulting in extremely toxic and corrosive fumes; will lead to decomposition to elemental bromine
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| Toxic and very corrosive
+|-
+| style="text-align:center;"| [[Hydrochloric acid]]
+| style="text-align:center;"| Any alkali or alkaline-earth carbonate, bicarbonate
+| style="text-align:center;"| DON'T! Results in acidic vapors, extremely dangerous and corrosive
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| NO!
+| style="text-align:center;"| Toxic to wildlife and corrosive to minerals
+|-
+| style="text-align:center;"| [[Hydrofluoric acid]]
+| style="text-align:center;"| Calcium hydroxide, carbonate
+| style="text-align:center;"| DON'T! Results in acidic fumes, which on contact with skin will lead to burns and death
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Calcium fluoride is more inert than most fluorides and poses little toxicity to wildlife; occurs naturally
+|-
+| style="text-align:center;"| [[Hydrogen bromide]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense mist; sodium thiosulfate can be used for removing free bromine
+| style="text-align:center;"| DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting bromine vapors
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| Corrosive to organisms and rocks; Bromides have little effect to wildlife
+|-
+| style="text-align:center;"| [[Hydrogen chloride]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense ammonium chloride mist
+| style="text-align:center;"| NO
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive for rocks, toxic for all wildlife
+|-
+| style="text-align:center;"| [[Hydrogen cyanide]]
+| style="text-align:center;"| Absorbtion in water, base, followed by oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas
+| style="text-align:center;"| Burns if ignited, but excess oxygen is required for complete burning
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Highly toxic for all wildlife
+|-
+| style="text-align:center;"| [[Hydrogen fluoride]]
+| style="text-align:center;"| Calcium hydroxide, carbonate, bicarbonate; for gaseous form, excess ammonia can be used, though will result in a dense ammonium fluoride mist; further treatment with calcium hydroxide, carbonate will convert it to the more safe CaF<sub>2</sub>
+| style="text-align:center;"| NO
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive for all life, inorganic materials, toxic for all wildlife
+|-
+| style="text-align:center;"| [[Hydrogen iodide]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate; for gaseous form, ammonia can be used, though will result in a dense mist; sodium thiosulfate can also be used
+| style="text-align:center;"| DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting iodine vapors
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| Corrosive to organisms and rocks; Iodides have little toxicity to wildlife
+|-
+| style="text-align:center;"| [[Hydrogen peroxide]]
+| style="text-align:center;"| Manganese dioxide, iron(III) oxide
+| style="text-align:center;"| Diluted solutions will break down harmlessly; Very concentrated solutions may explode if contaminated
+| style="text-align:center;"| Not if concentrated solutions
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly for microbial life, extremely toxic for small animals and aquatic life
+|-
+| style="text-align:center;"| [[Hydrogen sulfide]]
+| style="text-align:center;"| Hydrogen peroxide; sulfur dioxide
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Very toxic for animals at high concentrations; Occurs naturally, but at low concentrations
+|-
+| style="text-align:center;"| [[Hydroiodic acid]]
+| style="text-align:center;"| Any alkali or alkaline-earth carbonate, bicarbonate
+| style="text-align:center;"| DON'T! Will lead to extremely dangerous and corrosive fumes, which will decompose, resulting iodine vapors
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| NO! Neutralize first
+| style="text-align:center;"| Corrosive to organisms and rocks; Iodides have little toxicity to wildlife
+|-
+| style="text-align:center;"| [[Hydroquinone]]
+| style="text-align:center;"| Mixed with a more flammable solvent and safely incinerated; Controlled oxidation with chromic acid, piranha solution, Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Occurs naturally; toxic and possibly carcinogen in high doses
+|-
+| style="text-align:center;"| [[Hydroxyacetone]]
+| style="text-align:center;"| Mixed with a flammable solvent and incinerated; Diluted in water and poured down the drain
+| style="text-align:center;"| Burns at high temperatures, releasing carbon dioxide, water vapors, acrolein
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Little environmental impact from the literature available
+|-
+| style="text-align:center;"| [[Hydroxylamine]]
+| style="text-align:center;"| Reduction with Zn/HCl; Dilution followed by decomposition with ferrous or ferric salts; Addition of ketone or aldehyde then heated to decompose
+| style="text-align:center;"| Explodes (free base)
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic for animals at high concentrations
+|-
+| style="text-align:center;"| [[Hydroxylammonium chloride]]
+| style="text-align:center;"| Dilution followed by addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl
+| style="text-align:center;"| Decomposes releasing HCl and nitrogen oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic for animals at high concentrations
+|-
+| style="text-align:center;"| [[Hydroxylammonium nitrate]]
+| style="text-align:center;"| Dilution followed by decomposition with ferrous or ferric salts; Addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl
+| style="text-align:center;"| Explodes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic for animals at high concentrations
+|-
+| style="text-align:center;"| [[Hydroxylammonium perchlorate]]
+| style="text-align:center;"| Dilution followed by precipitation of perchlorate with potassium ions, filtration then neutralization of hydroxylamine via addition of ketone or aldehyde, then heated to decompose; Reduction with Zn/HCl
+| style="text-align:center;"| Decomposes releasing nitrogen oxides, nitrogen, HCl, water vapors; explodes at high temperature
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic for animals at high concentrations
+|-
+| style="text-align:center;"| [[Hydroxylammonium sulfate]]
+| style="text-align:center;"| Dilution followed by addition of ketone or aldehyde then heated to decompose; Reduction with Zn/HCl
+| style="text-align:center;"| Decomposes releasing sulfur and nitrogen oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic for animals at high concentrations
+|-
+| style="text-align:center;"| [[Hypochlorous acid]]
+| style="text-align:center;"| Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate
+| style="text-align:center;"| Decomposes to chlorine, chloric acid, hydrogen chloride
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic and corrosive to organisms, especially aquatic ones
+|-
+| style="text-align:center;"| [[Hypophosphorous acid]]
+| style="text-align:center;"| Diluted cooled hydrogen peroxide solution
+| style="text-align:center;"| Decomposes to phosphoric acid, phosphorous acid, phosphine
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful and corrosive to organisms, especially aquatic ones
+|-
+| style="text-align:center;"| [[Iditol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity
+|-
+| style="text-align:center;"| [[Indigo dye]]
+| style="text-align:center;"| Not required; can be dumped in trash
+| style="text-align:center;"| Yields carbon oxides, water vapors, nitrogen, soot, PAHs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity; occurs naturally
+|-
+| style="text-align:center;"| [[Ink]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| Yields carbon oxides, water vapors, leaves ash behind
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity; silver and copper-based inks may be harmful
+|-
+| style="text-align:center;"| [[Inositol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, occurs naturally in plants
+|-
+| style="text-align:center;"| [[Iodic acid]]
+| style="text-align:center;"| Neutralization with potassium, calcium bases, followed by reduction with a suitable reducing agent to iodide; thiosulfate added to remove any free iodine
+| style="text-align:center;"| Decomposes at high temperatures to iodine pentoxide which further decomposes above 300 °C to iodine and oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, both animals and plants
+|-
+| style="text-align:center;"| [[Iodine pentoxide]]
+| style="text-align:center;"| Neutralization with a solution sodium thiosulfate
+| style="text-align:center;"| Decomposes above melting point, releasing iodine and oxygen above 300 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to wildlife
+|-
+| style="text-align:center;"| [[Iodine trichloride]]
+| style="text-align:center;"| Neutralization with a cooled diluted solution of sodium hydroxide and sodium thiosulfate
+| style="text-align:center;"| Decomposes above melting point, releasing ICl and chlorine
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to wildlife
+|-
+| style="text-align:center;"| [[Iodoacetic acid]]
+| style="text-align:center;"| Neutralization with excess sodium hydroxide to sodium glycolate
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to most wildlife
+|-
+| style="text-align:center;"| [[Iodoform]]
+| style="text-align:center;"| Destruction with aqueous sodium hydroxide
+| style="text-align:center;"| Melts and decomposes near boiling point, releasing iodine, hydrogen iodine fumes
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife, especially if ingested; small animals are harmed easily
+|-
+| style="text-align:center;"| [[Iron(II) chloride]]
+| style="text-align:center;"| Calcium hydroxide (slaked lime)
+| style="text-align:center;"| Gives off hydrogen chloride fumes in air and or moisture
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Iron(II) sulfate]]
+| style="text-align:center;"| Not always required; Ammonium hydroxide, carbonate/bicarbonate
+| style="text-align:center;"| Breaks down to iron(III) oxide and gives off sulfur dioxide and trioxide fumes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, used in agriculture as iron supplement; May cause algal bloom if released in water bodies
+|-
+| style="text-align:center;"| [[Iron(II,III) oxide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Results in iron(III) oxide in the presence of air
+| style="text-align:center;"| Yes, but not advised
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, occurs naturally
+|-
+| style="text-align:center;"| [[Iron(III) chloride]]
+| style="text-align:center;"| Calcium hydroxide (slaked lime)
+| style="text-align:center;"| Gives off hydrogen chloride fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Iron(III) nitrate]]
+| style="text-align:center;"| Calcium hydroxide (slaked lime), followed by dilution
+| style="text-align:center;"| Gives off nitrogen oxide fumes, leaving behind iron(III) oxide
+| style="text-align:center;"| Dilute first!
+| style="text-align:center;"| Dilute first!
+| style="text-align:center;"| Harmful to environment in large and concentrated amounts; Diluted iron nitrate is a good source of iron and nitrogen for plants
+|-
+| style="text-align:center;"| [[Iron(III) oxide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Yes, but not advised
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, sometimes used in agriculture as iron supplement; May cause algal bloom if released in water bodies
+|-
+| style="text-align:center;"| [[Iron(III) sulfate]]
+| style="text-align:center;"| Calcium hydroxide (slaked lime)
+| style="text-align:center;"| Breaks down into iron(III) oxide and gives off sulfur oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive, toxic to aquatic life
+|-
+| style="text-align:center;"| [[Iron pentacarbonyl]]
+| style="text-align:center;"| Incineration; oxidation with peroxide; both done outside
+| style="text-align:center;"| Decomposes, releasing copious amounts of iron oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Carbon monoxide is deadly to organisms
+|-
+| style="text-align:center;"| [[Isatin]]
+| style="text-align:center;"| Not required; can be dumped in trash
+| style="text-align:center;"| Yields carbon oxides, water vapors, nitrogen, soot, PAHs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity; occurs naturally
+|-
+| style="text-align:center;"| [[Isobutanol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic life
+|-
+| style="text-align:center;"| [[Isopropanol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic life
+|-
+| style="text-align:center;"| [[Isopropyl nitrate]]
+| style="text-align:center;"| Photolysis; Hydrolysis with cold sodium hydroxide solution
+| style="text-align:center;"| Ignites and burns, may explode
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms; nitrate source for plants
+|-
+| style="text-align:center;"| [[Isopropyl nitrite]]
+| style="text-align:center;"| Neutralization with sodium hydroxide, followed by incineration
+| style="text-align:center;"| Detonation
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife and aquatic life
+|-
+| style="text-align:center;"| [[Isopropylamine]]
+| style="text-align:center;"| Neutralization with any acid; incineration; oxidation with Fenton's reagent
+| style="text-align:center;"| Flammable, burns to release carbon dioxide, water vapors and nitrogen; nitrogen dioxide may also be released
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife and especially aquatic life
+|-
+| style="text-align:center;"| [[Juglone]]
+| style="text-align:center;"| Controlled oxidation with Fenton's reagent
+| style="text-align:center;"| Decomposes at very high temperatures to yield carbon oxides, water vapor, soot, VOCs, etc.
+| style="text-align:center;"| Yes, but dilute first
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Occurs naturally; toxic to microorganisms and other plants
+|-
+| style="text-align:center;"| [[Kanthal]]
+| style="text-align:center;"| Taken to scrap metal centers<br>Dumped in trash
+| style="text-align:center;"| Melts at 1,500 °C
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic to wildlife due to chromium
+|-
+| style="text-align:center;"| [[Kerosene]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in the presence of air, to give off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic environment
+|-
+| style="text-align:center;"| [[Khusimol]]
+| style="text-align:center;"| Incineration; not required
+| style="text-align:center;"| Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally in various plants
+|-
+| style="text-align:center;"| [[Kojic acid]]
+| style="text-align:center;"| Mixed with a more flammable solvent and followed by incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[KS Fluid]]
+| style="text-align:center;"| Immersion underwater to prevent self-ignition, followed by adding a flocculating or a thickening agent to trap the phosphorus inside; resulting mass should be incinerated in a special incinerator
+| style="text-align:center;"| Pyrophoric, releases toxic sulfur dioxide and phosphorus pentoxide fumes
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Pyrophoric, toxic and corrosive to the environment
+|-
+| style="text-align:center;"| [[Lactic acid]]
+| style="text-align:center;"| Mixed with a more flammable solvent and followed by incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Lead(II) acetate]]
+| style="text-align:center;"| Alkali carbonate or hydroxide; Lead precipitate should be taken to disposal facilities
+| style="text-align:center;"| Results in lead oxides; Yields carbon oxides, water vapors
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Extremely toxic to all life, due to the good solubility of lead acetate
+|-
+| style="text-align:center;"| [[Lead(II) azide]]
+| style="text-align:center;"| Nitrous acid, ammonium acetate, sodium dichromate
+| style="text-align:center;"| Decomposes to lead/lead(II) oxide releasing nitrogen gas and may explode during decomposition
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Lead(II) chloride]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Lead(II) chromate]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Breaks down to its component oxides at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment
+|-
+| style="text-align:center;"| [[Lead(II) iodide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Lead(II) nitrate]]
+| style="text-align:center;"| Precipitation with a sulfide, carbonate or oxalate; wastes are to be taken to hazardous waste disposal centers
+| style="text-align:center;"| Breaks down in to lead oxide and releases nitrogen dioxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife due to its good solubility in water
+|-
+| style="text-align:center;"| [[Lead(II) oxide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Lead(II) sulfide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes around 500-1000 °C in air to yield sulfur and lead oxides and lead metal fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Occurs naturally; Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Lead(II,IV) oxide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not effective
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Lead(IV) acetate]]
+| style="text-align:center;"| Precipitate with an excess of carbonate, oxalate or a sulfide; waste is to be taken to hazardous waste disposal centers
+| style="text-align:center;"| Results in lead oxide and acetic acid, carbon dioxide, water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive and very toxic to all organisms
+|-
+| style="text-align:center;"| [[Lead(IV) oxide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to wildlife
+|-
+| style="text-align:center;"| [[Lead styphnate]]
+| style="text-align:center;"| Careful and controlled destruction using an oxidizing solution; insoluble lead wastes should be taken to hazardous waste disposal centers
+| style="text-align:center;"| Explodes, releasing lead oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to all organisms; lead is a known neurotoxin
+|-
+| style="text-align:center;"| [[Limonene]]
+| style="text-align:center;"| Incineration; oxidation; not always required
+| style="text-align:center;"| Results in carbon dioxide, water vapor, soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Lithium aluminium hydride]]
+| style="text-align:center;"| Neutralization with an alkali or carbonate solution; recycling of lithium ions
+| style="text-align:center;"| Decomposes to release hydrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive to organisms, will increase the aluminium concentration in soil or water
+|-
+| style="text-align:center;"| [[Lithium azide]]
+| style="text-align:center;"| Acidified sodium nitrite, nitrous acid
+| style="text-align:center;"| Detonates and gives off nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Lithium borohydride]]
+| style="text-align:center;"| Neutralization with an alkali or carbonate solution; Slow addition in a large volume of water or alcohol;Recycling of lithium ions
+| style="text-align:center;"| Decomposes to release hydrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive to organisms, will increase the boron concentration in soil or water
+|-
+| style="text-align:center;"| [[Lithium chloride]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Hydrated form will give some oxychloride salt
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Increases the chloride concentration in soil as well as lithium
+|-
+| style="text-align:center;"| [[Lithium hydride]]
+| style="text-align:center;"| Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; best performed in an open area
+| style="text-align:center;"| Decomposes to release hydrogen at very high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive to organisms, toxic to animals
+|-
+| style="text-align:center;"| [[Lithium hydroxide]]
+| style="text-align:center;"| Any acid, carbon dioxide, sulfur dioxide; recycling is a good choice
+| style="text-align:center;"| Breaks down to lithium oxide and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Lithium has little effect to plant life, but will affect the nervous system of animals when ingested in excess
+|-
+| style="text-align:center;"| [[Lithium hypochlorite]]
+| style="text-align:center;"| Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide
+| style="text-align:center;"| Melts and decomposes, releasing chlorine
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Corrosive and harmful to organisms, especially aquatic ones
+|-
+| style="text-align:center;"| [[Lithium nitrate]]
+| style="text-align:center;"| Precipitation; recycling; mixed with a combustible material and ignited
+| style="text-align:center;"| Breaks down to lithium oxide and nitrogen oxides
+| style="text-align:center;"| Yes, dilute first
+| style="text-align:center;"| Yes, dilute first
+| style="text-align:center;"| Nitrate is a source of nitrogen for plants; lithium has little effect to plant life, but will affect the nervous system of animals when ingested in excess
+|-
+| style="text-align:center;"| [[Lithium nitrite]]
+| style="text-align:center;"| Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to lithium carbonate or sulfate
+| style="text-align:center;"| Decomposes to form lithium oxide/hydroxide and releases nitrogen oxides fumes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No
+| style="text-align:center;"| Unlike nitrates, nitrites are poor source of nitrogen for plants; Lithium may be harmful for the central nervous system; Nitrites are toxic for most animals
+|-
+| style="text-align:center;"| [[Litmus]]
+| style="text-align:center;"| Not required; can be poured down the drain
+| style="text-align:center;"| Gives off carbon oxides, water vapor and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, occurs naturally
+|}
+===M-Z===
+{| border="1" cellpadding="1" cellspacing="1" class="article-table sortable" style="width: 100%;"
+|-
+! scope="col"|Substance
+! scope="col"|Neutralization
+! scope="col"|Heat treatment
+! scope="col"|Down the drain
+! scope="col"|Into the soil
+! scope="col"|Environmental considerations
+|-
+| style="text-align:center;"| [[Magnalium]]
+| style="text-align:center;"| Diluted acid; Incineration
+| style="text-align:center;"| Burns releasing aluminium and magnesium oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful for wildlife
+|-
+| style="text-align:center;"| [[Magnesium carbonate]]
+| style="text-align:center;"| Any acid; not always required
+| style="text-align:center;"| Not useful; breaks down into magnesium oxide and carbon dioxide at high temperatures
+| style="text-align:center;"| Yes, as powder
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; occurs naturally
+|-
+| style="text-align:center;"| [[Magnesium chloride]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Hydrated form gives the oxychloride salt
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| May increase the magnesium and chloride content in the soil significantly
+|-
+| style="text-align:center;"| [[Magnesium diboride]]
+| style="text-align:center;"| Careful hydrolysis
+| style="text-align:center;"| Oxidizes at high temperatures in air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Boron compounds are harmful
+|-
+| style="text-align:center;"| [[Magnesium hydroxide]]
+| style="text-align:center;"| Not always required; any acid can be used, though a weak one is more economical
+| style="text-align:center;"| Decomposes at 350 °C to magnesium oxide and releases water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Raises the soil pH; source of magnesium for plants
+|-
+| style="text-align:center;"| [[Magnesium nitrate]]
+| style="text-align:center;"| Not required; an aqueous carbonate solution, like potassium carbonate can be used if necessary
+| style="text-align:center;"| Decomposes above 330 °C to give off oxygen and nitrogen oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Good source of nitrogen and magnesium for plants (fertilizer); May cause algal bloom in water bodies
+|-
+| style="text-align:center;"| [[Magnesium oxide]]
+| style="text-align:center;"| Not always required; any acid can be used, though a weak one is more economical
+| style="text-align:center;"| Not effective
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Raises the soil pH; source of magnesium for plants
+|-
+| style="text-align:center;"| [[Magnesium sulfate]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Will dehydrate when heated; Gives off sulfur oxides at very high temperature
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Source of magnesium for plants
+|-
+| style="text-align:center;"| [[Malonic acid]]
+| style="text-align:center;"| Not always required, can be dumped in trash
+| style="text-align:center;"| Decomposes releasing acrid smoke, carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Maybe be source of food for some organisms
+|-
+| style="text-align:center;"| [[Manganese dioxide]]
+| style="text-align:center;"| Oxalic acid
+| style="text-align:center;"| Converts it into other oxides
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Manganese heptoxide]]
+| style="text-align:center;"| Aqueous solutions or suspensions of base, carbonate, bicarbonate
+| style="text-align:center;"| Breaks down to manganese dioxide and gives off ozone; may explode
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Burns organic material on contact, even wet organic material
+|-
+| style="text-align:center;"| [[Manganese(II) chloride]]
+| style="text-align:center;"| Precipitated to managnese dioxide; Taken to waste disposal facilities; Dumped in trash
+| style="text-align:center;"| Decomposes at high temperatures
+| style="text-align:center;"| Yes, but in small quantities
+| style="text-align:center;"| Yes, but in small quantities
+| style="text-align:center;"| Classified as dangerous to environment
+|-
+| style="text-align:center;"| [[Manganese(II) sulfate]]
+| style="text-align:center;"| Dumped in trash
+| style="text-align:center;"| Decomposes at high temperatures
+| style="text-align:center;"| Yes, but in small quantities
+| style="text-align:center;"| Yes, but in small quantities
+| style="text-align:center;"| Classified as dangerous to environment
+|-
+| style="text-align:center;"| [[Mannitol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Melts; Releases carbon dioxide and water vapor at high temperatures
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Cannot be digested by most organisms, but has no dangerous effects on wildlife
+|-
+| style="text-align:center;"| [[Mannitol hexanitrate]]
+| style="text-align:center;"| Cooled aqueous solution of diluted sodium hydroxide, added in excess
+| style="text-align:center;"| Detonates at temperatures > 120 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| In small amounts
+| style="text-align:center;"| Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
+|-
+| style="text-align:center;"| [[Menthol]]
+| style="text-align:center;"| Incineration; not required
+| style="text-align:center;"| Releases carbon dioxide, monoxide, water vapors and soot; Burns in rich oxygen atmosphere
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, biodegradable; Occurs naturally in various plants, like peppermint
+|-
+| style="text-align:center;"| [[Mercury sulfide]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes over 580 °C to yield sulfur oxides and mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Occurs naturally; Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) chloride]]
+| style="text-align:center;"| Conversion to cinnabar; Taken to hazardous waste disposal centers
+| style="text-align:center;"| Sublimes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) fulminate]]
+| style="text-align:center;"| Conversion to cinnabar; Taken to hazardous waste disposal centers
+| style="text-align:center;"| Explodes, giving off carbon oxides, nitrogen gas and hazardous mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) nitrate]]
+| style="text-align:center;"| Conversion to cinnabar; Taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes, releasing nitrogen dioxide, oxygen, mercury(II) oxide, mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) oxide]]
+| style="text-align:center;"| Conversion to cinnabar; Taken to hazardous waste disposal centers
+| style="text-align:center;"| Decomposes over 500 °C to yield mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) sulfate]]
+| style="text-align:center;"| Taken to hazardous waste disposal centers; Conversion to cinnabar
+| style="text-align:center;"| Decomposes over 450 °C to yield sulfur oxides and mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Mercury(II) thiocyanate]]
+| style="text-align:center;"| Conversion to mercury(II) sulfide; Taken to hazardous waste disposal centers;
+| style="text-align:center;"| Decomposes over 165 °C to yield a residue known as "Pharaoh's snake", as well as sulfur oxides and mercury vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic to the environment and all life
+|-
+| style="text-align:center;"| [[Metformin]]
+| style="text-align:center;"| Strong oxidizing solution, like chromic acid
+| style="text-align:center;"| Decomposes giving off carbon oxides, nitrogen, water, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| High nitrogen content may be suitable for plants; large amounts may be harmful for fauna
+|-
+| style="text-align:center;"| [[Methane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Releases carbon dioxide and water vapors
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Contributes to global warming
+|-
+| style="text-align:center;"| [[Methanol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Will give off carbon dioxide and water vapor, as well as some formaldehyde if not enough oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic to wildlife
+|-
+| style="text-align:center;"| [[Methyl acetate]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Hazardous to environment in large amounts
+|-
+| style="text-align:center;"| [[Methyl blue]]
+| style="text-align:center;"| Poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| May be harmful to microorganisms, fauna and water bodies
+|-
+| style="text-align:center;"| [[Methyl cellosolve]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapors
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Relative safe, harmful in large amounts
+|-
+| style="text-align:center;"| [[Methyl ethyl ketone]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Methyl ethyl ketone peroxide]]
+| style="text-align:center;"| Reduction with a reducing agent, such as sodium sulfite; Test for peroxides after neutralization; If no peroxides present, incineration or other proper disposal method
+| style="text-align:center;"| Decomposes and explodes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Methyl formate]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Hazardous to environment in large amounts
+|-
+| style="text-align:center;"| [[Methyl iodide]]
+| style="text-align:center;"| Alkali solution, followed by sodium thiosulfate to remove any free iodine
+| style="text-align:center;"| Decomposes to release iodine fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife in high concentrations; Occurs naturally in low concentrations
+|-
+| style="text-align:center;"| [[Methyl isobutyl ketone]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to wildlife
+|-
+| style="text-align:center;"| [[Methyl nitrate]]
+| style="text-align:center;"| Diluted alkali solution, recommended to be cooled first to prevent possible explosion
+| style="text-align:center;"| Will lead to explosion
+| style="text-align:center;"| No
+| style="text-align:center;"| No
+| style="text-align:center;"| Dangerous to wildlife
+|-
+| style="text-align:center;"| [[Methyl orange]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| Dangerous to environment, mutagen
+|-
+| style="text-align:center;"| [[Methyl red]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| May be harmful to water bodies
+|-
+| style="text-align:center;"| [[Methyl salicylate]]
+| style="text-align:center;"| Incineration; Not always required
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to environment in small amounts
+|-
+| style="text-align:center;"| [[Methyl tert-butyl ether]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Classified as hazardous to environment and ground water
+|-
+| style="text-align:center;"| [[Methyl yellow]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to environment, mutagen, carcinogen
+|-
+| style="text-align:center;"| [[Methylamine]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in air, giving off carbon dioxide, nitrogen and water vapors
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
+|-
+| style="text-align:center;"| [[Methylene blue]]
+| style="text-align:center;"| Poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, sulfur oxides, nitrogen, water, hydrogen chloride vapors, VOCs, PAHs and other harmful compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| May be harmful to microbial life, fauna and water bodies
+|-
+| style="text-align:center;"| [[Mineral oil]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Will burn at high temperatures, releasing carbon oxides, water vapors and soot
+| style="text-align:center;"| No
+| style="text-align:center;"| No
+| style="text-align:center;"| Oils float on water bodies and inhibit the cellular breathing of many organisms
+|-
+| style="text-align:center;"| [[Mischmetal]]
+| style="text-align:center;"| Recycled<br>Dumped in trash
+| style="text-align:center;"| Melts between 790 – 1010 °C
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Possible, though not recommended
+| style="text-align:center;"| Lanthanides show low toxicity to organisms
+|-
+| style="text-align:center;"| [[Monopotassium phosphate]]
+| style="text-align:center;"| Not required; Excess slaked lime can be used to precipitate calcium phosphate
+| style="text-align:center;"| Decomposes on heating at high temperatures to release water vapors, leaving a residue of potassium and phosphorus oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, good fertilizer (potassium and phosphorus source)
+|-
+| style="text-align:center;"| [[Morpholine]]
+| style="text-align:center;"| Mixed with a flammable solvent and burned
+| style="text-align:center;"| Decomposes, releases combustion gasses, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| May cause death of aqueous organisms
+|-
+| style="text-align:center;"| [[Mu-metal]]
+| style="text-align:center;"| Recycling<br>Taken to scrap metal centers
+| style="text-align:center;"| Melts at around 1454°C
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Dangerous to wildlife due to nickel and chromium content
+|-
+| style="text-align:center;"| [[Murexide]]
+| style="text-align:center;"| Poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon oxides, nitrogen, water, soot, VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Environmental effects are currently unknown
+|-
+| style="text-align:center;"| [[N-(1-Naphthyl)ethylenediamine dihydrochloride]]
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid
+| style="text-align:center;"| Decomposes, releasing carbon oxides, nitrogen oxides, water vapors, PAHs, soot
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Possibly harmful for the environment; little data available on its environmental effects
+|-
+| style="text-align:center;"| [[N-Allylthiourea]]
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid
+| style="text-align:center;"| Generates carbon oxides, water vapor, sulfur oxides, soot and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful to wildlife; Nitrification inhibitor, slows the nitrification of ammonia
+|-
+| style="text-align:center;"| [[N-Methyl-2-pyrrolidone]]
+| style="text-align:center;"| Mixed with a more flammable solvent, followed by incineration outside or in an incinerator; Oxidation with Fenton's reagent under controlled conditions
+| style="text-align:center;"| Gives off toxic fumes or carbon dioxide, nitrogen oxides, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[NaK]]
+| style="text-align:center;"| Long-chained alcohols, diluted with an alkane
+| style="text-align:center;"| Ignites in air
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Pyrophoric, both alloy and reaction products corrosive to wildlife
+|-
+| style="text-align:center;"| [[Naphtha]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burning gives combustion gasses as well as soot, carbon monoxide and various VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife; very dangerous for aquatic life
+|-
+| style="text-align:center;"| [[Naphthalene]]
+| style="text-align:center;"| Incineration, best done in an incinerator with afterburner; Oxidation with Fenton's reagent
+| style="text-align:center;"| Generates carbon dioxide, water vapors, carbon monoxide, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Naphthol Green B]]
+| style="text-align:center;"| Poured down the drain; oxidized with a strong oxidizing solution, neutralized then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon and sulfur oxides, nitrogen, water, soot, VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| May be harmful to microorganisms, fish in water bodies
+|-
+| style="text-align:center;"| [[Neodymium iron boron magnet]]
+| style="text-align:center;"| Recycled<br>Dumped in trash
+| style="text-align:center;"| Loses magnetism when heated and melts at high temperatures
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Possible, though not recommended
+| style="text-align:center;"| Lanthanides show low toxicity to organisms
+|-
+| style="text-align:center;"| [[Neodymium oxalate]]
+| style="text-align:center;"| Pyrolysis, followed by recycling of Nd slag
+| style="text-align:center;"| Gives off carbon oxides, leaving neodymium oxides and hydroxides behind
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Presents toxicity to wildlife due to the oxalate group
+|-
+| style="text-align:center;"| [[Niacin]]
+| style="text-align:center;"| Dumped in trash, poured down the drain
+| style="text-align:center;"| Sublimes and decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, essential nutrient for life
+|-
+| style="text-align:center;"| [[Nichrome]]
+| style="text-align:center;"| Recycled<br>Dumped in trash
+| style="text-align:center;"| Melts at 1400 °C
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Nickel and chromium are harmful for wildlife
+|-
+| style="text-align:center;"| [[Nickel hydrazine nitrate]]
+| style="text-align:center;"| Safe detonation in remote area
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Nickel is very toxic for animals; hydrazine is very toxic to environment
+|-
+| style="text-align:center;"| [[Nickel hydrazine perchlorate]]
+| style="text-align:center;"| Strong dilution in water, followed by CAREFUL addition of a diluted base; precipitation of nickel
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Nickel is harmful for animals; hydrazine is very toxic to environment; perchlorates are toxic for animals and plants
+|-
+| style="text-align:center;"| [[Nickel(II) nitrate]]
+| style="text-align:center;"| Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers
+| style="text-align:center;"| Gives off nitrogen oxide fumes, leaving behind nickel oxide slag
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, allergen
+|-
+| style="text-align:center;"| [[Nickel(II) perchlorate]]
+| style="text-align:center;"| Reduction of perchlorate to chloride; Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers
+| style="text-align:center;"| Gives off chlorine oxide fumes, leaving behind nickel oxide slag; may decompose violently if organic contaminant present
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, allergen
+|-
+| style="text-align:center;"| [[Nickel(II) sulfate]]
+| style="text-align:center;"| Precipitation with a soluble hydroxide; precipitate should be taken to disposal centers
+| style="text-align:center;"| Gives off sulfur oxide fumes, leaving behind nickel oxide slag
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, allergen
+|-
+| style="text-align:center;"| [[Nicotinamide]]
+| style="text-align:center;"| Dumped in trash, poured down the drain
+| style="text-align:center;"| Sublimes and decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, essential nutrient for life
+|-
+| style="text-align:center;"| [[Nicotine]]
+| style="text-align:center;"| Oxidation; Photolysis; Pyrolysis with [[selenium]]
+| style="text-align:center;"| Generates carbon oxides, water vapors, soot, VOCs and toxic nicotine vapors
+| style="text-align:center;"| Acceptable in small quantities
+| style="text-align:center;"| Only as insecticide
+| style="text-align:center;"| Deadly to small animals, toxic and addictive to large organisms; absorbs through skin; biodegradable
+|-
+| style="text-align:center;"| [[Nile red]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Gives off carbon oxides, water vapor and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Limited data on its environmental effects
+|-
+| style="text-align:center;"| [[Nitric acid]]
+| style="text-align:center;"| Any base, hydroxide, carbonate, bicarbonate
+| style="text-align:center;"| Boils off, while also giving off nitrogen dioxide fumes
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Corrosive to organisms and rocks; its salts are excellent nitrogen source for plants
+|-
+| style="text-align:center;"| [[Nitric oxide]]
+| style="text-align:center;"| Sodium percarbonate solution
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Oxidizes to nitrogen dioxide in air, which is highly toxic and corrosive; creates acid rain
+|-
+| style="text-align:center;"| [[Nitrobenzene]]
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to all wildlife
+|-
+| style="text-align:center;"| [[Nitrocellulose]]
+| style="text-align:center;"| Controlled incineration; Hydrolysis with aqueous alkali hydroxide
+| style="text-align:center;"| Breaks down to release combustion gasses and self-ignites at 160 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| No; however it can be converted to fertilizer by adding aqueous ammonia
+| style="text-align:center;"| Breaks down in the presence of water to give nitric acid, which, after neutralization becomes source of nitrogen for plants
+|-
+| style="text-align:center;"| [[Nitroethane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns giving off carbon oxides, water vapors and nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife
+|-
+| style="text-align:center;"| [[Nitrogen dioxide]]
+| style="text-align:center;"| Bubbling through an alkali solution, peroxide solution
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| No
+| style="text-align:center;"| Reacts with air moisture to generate nitric acid and contributes to the acid rain; extremely toxic to animals and plants
+|-
+| style="text-align:center;"| [[Nitrogen trichloride]]
+| style="text-align:center;"| Photolysis; Hydrolysis with hot water; Reduction with sodium thiosulfate
+| style="text-align:center;"| Detonates
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Corrosive and toxic to wildlife
+|-
+| style="text-align:center;"| [[Nitrogen triiodide]]
+| style="text-align:center;"| Sodium thiosulfate solution
+| style="text-align:center;"| Detonation, giving off corrosive iodine vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| The iodine vapors it gives off during decomposition are dangerous to organisms in short term
+|-
+| style="text-align:center;"| [[Nitroglycerin]]
+| style="text-align:center;"| Photolysis; Hydrolysis with cold sodium hydroxide solution
+| style="text-align:center;"| Violent detonation
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms; nitrate source for plants
+|-
+| style="text-align:center;"| [[Nitroguanidine]]
+| style="text-align:center;"| Not required, can be dumped in ground; Careful and controlled pyrolysis
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures
+| style="text-align:center;"| Possibly
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, nitrogen source for plants, used as fertilizer; Guanidine derivates occur in guano
+|-
+| style="text-align:center;"| [[Nitromethane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns giving off carbon oxides, water vapors and nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife
+|-
+| style="text-align:center;"| [[Nitronium perchlorate]]
+| style="text-align:center;"| Slow addition to water, followed by neutralization with dil. NaOH
+| style="text-align:center;"| Decomposes to release nitrogen/chlorine oxides and oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous and very toxic to wildlife
+|-
+| style="text-align:center;"| [[Nitronium tetrafluoroborate]]
+| style="text-align:center;"| Slow addition to water, followed by neutralization with dil. NaOH
+| style="text-align:center;"| Decomposes to release NO<sub>2</sub>F and BF<sub>3</sub>
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous and very toxic to wildlife
+|-
+| style="text-align:center;"| [[Nitrosonium tetrafluoroborate]]
+| style="text-align:center;"| Slow addition to water, followed by neutralization with dil. NaOH
+| style="text-align:center;"| Decomposes to release NOF and BF<sub>3</sub>, in moist air forms acids
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous and very toxic to wildlife
+|-
+| style="text-align:center;"| [[Nitrosyl chloride]]
+| style="text-align:center;"| Aqueous base; percarbonates can also be used to remove nitric oxide; multiple washings may be required
+| style="text-align:center;"| Decomposes, giving off nitrogen oxide and chlorine/HCl fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Highly corrosive and toxic to all organisms and materials
+|-
+| style="text-align:center;"| [[Nitrosylsulfuric acid]]
+| style="text-align:center;"| Careful addition to crushed ice, followed by neutralization with a diluted base
+| style="text-align:center;"| Decomposes releasing toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly and extremely corrosive to all organisms
+|-
+| style="text-align:center;"| [[Nitrourea]]
+| style="text-align:center;"| Diluted and hydrolyzed; Careful and controlled pyrolysis
+| style="text-align:center;"| Pyrolysis gives nitrogen, water and carbon/nitrogen oxides; may explode at high temperatures
+| style="text-align:center;"| Hydrolyze first
+| style="text-align:center;"| Hydrolyze first
+| style="text-align:center;"| May pose toxicity to fauna
+|-
+| style="text-align:center;"| [[Nitrous acid]]
+| style="text-align:center;"| Any base, hydroxide, carbonate, bicarbonate; percarbonates can also be used
+| style="text-align:center;"| Decomposes, giving off nitrogen oxide fumes
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Corrosive to organisms and rocks; salts somewhat toxic to animals
+|-
+| style="text-align:center;"| [[Nitrous oxide]]
+| style="text-align:center;"| Gentle reduction with various reducing agents
+| style="text-align:center;"| Breaks down to nitrogen and oxygen at high temperatures
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Low toxicity to wildlife, may induce light narcotic effects and laughing sensation in some organisms
+|-
+| style="text-align:center;"| [[Nonane]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Ignites in air, gives off carbon dioxide and water vapors, soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life and organisms
+|-
+| style="text-align:center;"| [[Octane]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to aquatic life and organisms
+|-
+| style="text-align:center;"| [[Octyl acetate]]
+| style="text-align:center;"| Mixed with a more flammable solvent, followed by incineration
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, occurs naturally in citrus fruit peels
+|-
+| style="text-align:center;"| [[Onchidal]]
+| style="text-align:center;"| Neutralization with an oxidizing mixture
+| style="text-align:center;"| Gives off carbon oxides, water vapors and soot
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Highly toxic, occurs naturally
+|-
+| style="text-align:center;"| [[Orcein]]
+| style="text-align:center;"| Not required; can be poured down the drain
+| style="text-align:center;"| Gives off carbon oxides, water vapor and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, occurs naturally
+|-
+| style="text-align:center;"| [[Orotic acid]]
+| style="text-align:center;"| Pyrolysis; diluted and poured down the drain
+| style="text-align:center;"| Decomposes on heating to release carbon oxides and various organic compounds
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| Yes, if diluted
+| style="text-align:center;"| May pose a threat to wildlife in large amounts
+|-
+| style="text-align:center;"| [[Osmium tetroxide]]
+| style="text-align:center;"| Reduced with hydrogen or another reducing agent
+| style="text-align:center;"| Sublimes, releasing highly toxic fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic in short term
+|-
+| style="text-align:center;"| [[Oxalic acid]]
+| style="text-align:center;"| Neutralization with any oxide, hydroxide, carbonate, followed by pyrolysis
+| style="text-align:center;"| Releases carbon oxides and water vapor at high temperature
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| No
+| style="text-align:center;"| Toxic to wildlife; Small amounts occur in some plants
+|-
+| style="text-align:center;"| [[Oxalyl chloride]]
+| style="text-align:center;"| Disolving it in large amounts of water, followed by neutralization with any oxide, hydroxide, carbonate
+| style="text-align:center;"| Sublimes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and corrosive to wildlife and environment
+|-
+| style="text-align:center;"| [[Ozone]]
+| style="text-align:center;"| Any compound easily oxidizable that does not ignite, such as carbon monoxide, activated charcoal
+| style="text-align:center;"| Accelerates the decomposition of ozone, but not enough
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| No
+| style="text-align:center;"| Dangerous to wildlife, may oxidize various gaseous compounds, contributing to the acid rain; In the upper atmosphere it acts as UV shield
+|-
+| style="text-align:center;"| [[p-Dimethylaminobenzalrhodanine]]
+| style="text-align:center;"| Oxidized with a strong oxidizing solution, such as chromic acid, Fenton's reagent, piranha solution, followed by neutralization and then poured down the drain
+| style="text-align:center;"| Decomposes giving off carbon dioxide, nitrogen, water vapors, VOCs, PAHs
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| No, neutralize first
+| style="text-align:center;"| May be harmful to water bodies
+|-
+| style="text-align:center;"| [[Paper]]
+| style="text-align:center;"| Incineration; Dumping in trash
+| style="text-align:center;"| Will burn if ignited, releasing carbon oxides, water vapors and soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump uncomposted
+| style="text-align:center;"| Excess paper is harmful for environment, unless composted first
+|-
+| style="text-align:center;"| [[Paraffin wax]]
+| style="text-align:center;"| Incineration; Dumping in trash
+| style="text-align:center;"| Will burn at high temperatures, releasing carbon oxides, water vapors and soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Wax, both solid and molten, floats on water bodies and may inhibit the cellular breathing of many organisms
+|-
+| style="text-align:center;"| [[Pentaerythritol]]
+| style="text-align:center;"| Mixed with a flammable solvent and incinerated
+| style="text-align:center;"| Gives off carbon oxides, water vapors, aldehydes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to aquatic life; Classified as biodegradable<ref>http://www.inchem.org/documents/sids/sids/115775.pdf</ref>
+|-
+| style="text-align:center;"| [[Pentaerythritol tetranitrate]]
+| style="text-align:center;"| Oxidation with Fenton's reagent; Mixed with a flammable solvent and incinerated; Reduction with powdered iron<ref>http://pubs.acs.org/doi/abs/10.1021/es7029703?journalCode=esthag</ref>
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Displays relative low toxicity to aquatic life; PETN undergoes safe biodegradation
+|-
+| style="text-align:center;"| [[Pentane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, releases carbon oxides, water vapor when burned in air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to wildlife
+|-
+| style="text-align:center;"| [[Pentanoic acid]]
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain; valeric salts can also be pyrolyzed in a kiln
+| style="text-align:center;"| Flammable (high concentrations, >86 °C), no dangerous combustion products, though the smoke will have a rancid smell
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Safe, biodegradable; avoid dumping large amounts, dangerous to microfauna and water bodies
+|-
+| style="text-align:center;"| [[Pentanol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic life in large concentrations
+|-
+| style="text-align:center;"| [[Peracetic acid]]
+| style="text-align:center;"| Dilution in water, followed by neutralization with a base; iron oxide can be added to decompose hydrogen peroxide; can be poured down the drain afterwards
+| style="text-align:center;"| May explode at high temperatures, at high concentrations
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Toxic and corrosive to wildlife, both animals and plants
+|-
+| style="text-align:center;"| [[Perchloric acid]]
+| style="text-align:center;"| Neutralization with potassium, calcium bases, followed by reduction with metallic iron under UV light in the absence of air
+| style="text-align:center;"| May explode at high temperatures, at high concentrations
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, both animals and plants
+|-
+| style="text-align:center;"| [[Periodic acid]]
+| style="text-align:center;"| Neutralization with potassium, calcium bases, followed by reduction with a suitable reducing agent to iodide; thiosulfate added to remove any free iodine
+| style="text-align:center;"| Decomposes at high temperatures to iodine pentoxide which further decomposes above 300 °C to iodine and oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife, both animals and plants
+|-
+| style="text-align:center;"| [[Permanganic acid]]
+| style="text-align:center;"| Hydrogen peroxide; Caro's acid
+| style="text-align:center;"| Leads to decomposition, resulting in manganese dioxide slag
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
+|-
+| style="text-align:center;"| [[Peroxydisulfuric acid]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate
+| style="text-align:center;"| May explode if concentrated
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Strong oxidizer, it is dangerous and toxic to small organisms
+|-
+| style="text-align:center;"| [[Peroxymonosulfuric acid]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate
+| style="text-align:center;"| May explode if concentrated
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Strong oxidizer, it is dangerous and toxic to small organisms
+|-
+| style="text-align:center;"| [[Petroleum]]
+| style="text-align:center;"| Controlled incineration
+| style="text-align:center;"| Burns in the presence of air, to give off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic environment
+|-
+| style="text-align:center;"| [[Petroleum ether]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in the presence of air, to give off carbon dioxide and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic environment
+|-
+| style="text-align:center;"| [[Phenanthroline]]
+| style="text-align:center;"| Oxidation with Fenton's reagent or piranha solution, followed by neutralization and poured down the drain
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot, VOCs, PAHs, nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to environment, very toxic to aquatic life
+|-
+| style="text-align:center;"| [[Phenethyl alcohol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Flammable if preheated, gives off carbon dioxide, soot and water vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful for wildlife and aquatic life in large concentrations
+|-
+| style="text-align:center;"| [[Phenol]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous to environment
+|-
+| style="text-align:center;"| [[Phenolphthalein]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| Dilute it with plenty of water before release
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dangerous to environment in large amounts
+|-
+| style="text-align:center;"| [[Phenylacetaldehyde]]
+| style="text-align:center;"| Not always required, may be strongly diluted and poured down the drain
+| style="text-align:center;"| Breaks down to carbon oxides, water vapors, soot; may give off aromatic vapors
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Low toxicity, occurs naturally in plants
+|-
+| style="text-align:center;"| [[Phenylacetic acid]]
+| style="text-align:center;"| Not always required, may be strongly diluted and poured down the drain
+| style="text-align:center;"| Breaks down to carbon oxides, water vapors, soot; may give off aromatic vapors
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Low toxicity, may occur naturally in small amounts
+|-
+| style="text-align:center;"| [[Phenylacetone]]
+| style="text-align:center;"| Excess bleach, excess NaOH
+| style="text-align:center;"| Breaks down releasing carbon dioxide, water vapors, soot, PAHs
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Relative safe, poses low toxicity
+|-
+| style="text-align:center;"| [[Phenylacetylene]]
+| style="text-align:center;"| Oxidation with Fenton's reagent; Incineration, best done with an afterburner
+| style="text-align:center;"| Flammable, burns in air to release carbon oxides, water vapors, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife and very dangerous to aquatic life, as well as soil
+|-
+| style="text-align:center;"| [[Phloroglucinol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapors
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Relative safe, biodegradable; Occurs naturally in small amounts
+|-
+| style="text-align:center;"| [[Phosgene]]
+| style="text-align:center;"| Alkaline metal hydroxide, ammonia
+| style="text-align:center;"| NO
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic for all organisms
+|-
+| style="text-align:center;"| [[Phosphine]]
+| style="text-align:center;"| Bleach (best bet); hydrogen peroxide; oxygen; ozone;
+| style="text-align:center;"| May ignite in the presence of air
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Extremely toxic for all organisms, used to kill pests
+|-
+| style="text-align:center;"| [[Phosphoric acid]]
+| style="text-align:center;"| Any metal oxide, hydroxide, carbonate
+| style="text-align:center;"| Not very useful
+| style="text-align:center;"| Yes, if it's diluted
+| style="text-align:center;"| Neutralize it first, good source of phosphorus, unless contaminated
+| style="text-align:center;"| Deadly to small animals; excess in water bodies may cause algal bloom
+|-
+| style="text-align:center;"| [[Phosphorus pentabromide]]
+| style="text-align:center;"| Suspension of calcium hydroxide, sodium thiosulfate, cooled; PBr<sub>5</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Breaks down to bromine, hydrogen bromide, phosphorus tribromide and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phosphorus pentachloride]]
+| style="text-align:center;"| Suspension of calcium hydroxide, cooled; PCl<sub>5</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phosphorus pentoxide‎‎]]
+| style="text-align:center;"| Alkaline solution, lots of water
+| style="text-align:center;"| Will volatilize at very high temperatures
+| style="text-align:center;"| No, reaction with water is highly exothermic and may generate acidic steam
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Corrosive and dangerous on direct contact with wildlife; Reaction with water will lead to phosphoric acid, highly corrosive and dangerous.
+|-
+| style="text-align:center;"| [[Phosphorus tribromide]]
+| style="text-align:center;"| Suspension of calcium hydroxide, sodium thiosulfate, cooled; PBr<sub>3</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Boils and breaks down to bromine, hydrogen bromide and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phosphorus trichloride]]
+| style="text-align:center;"| Suspension of calcium hydroxide, sodium thiosulfate, cooled; PCl<sub>3</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phosphorus triiodide]]
+| style="text-align:center;"| Sodium thiosulfate solution/suspension; PI<sub>3</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Decomposes, releasing corrosive fumes
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| DO NOT DUMP!
+| style="text-align:center;"| Very toxic and corrosive to organisms and rocks
+|-
+| style="text-align:center;"| [[Phosphoryl bromide]]
+| style="text-align:center;"| Suspension of calcium hydroxide, sodium thiosulfate, cooled; POBr<sub>3</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Boils and breaks down to bromine, hydrogen bromide and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phosphoryl chloride]]
+| style="text-align:center;"| Suspension of calcium hydroxide, sodium thiosulfate, cooled; POCl<sub>3</sub> is added slowly to prevent splashing; Neutralization area must be well ventilated
+| style="text-align:center;"| Boils and breaks down to chlorine, hydrogen chloride and phosphorous acids in the presence of air/moisture
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| DO NOT DUMP! Neutralize it first
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
+|-
+| style="text-align:center;"| [[Phthalic anhydride]]
+| style="text-align:center;"| Oxidation with oxidizing solutions, such as chromic acid, Fenton's reagent, piranha solution
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| Dilute it with plenty of water before release
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dangerous to environment in large amounts
+|-
+| style="text-align:center;"| [[Picramic acid]]
+| style="text-align:center;"| Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon dioxide, water vapors, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic to environment
+|-
+| style="text-align:center;"| [[Picric acid]]
+| style="text-align:center;"| Hydrolysis with aqueous sodium hydroxide; oxidation with Fenton's reagent; Containers with dry picric acid should be taken by professionals and safely detonated in a remote location
+| style="text-align:center;"| Gives off carbon dioxide, water vapors, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic to environment
+|-
+| style="text-align:center;"| [[PLX]]
+| style="text-align:center;"| Strongly diluted with a flammable solvent and safely incinerated
+| style="text-align:center;"| Gives off carbon dioxide, water vapors, may explode if impurities present
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very harmful to environment
+|-
+| style="text-align:center;"| [[Polystyrene]]
+| style="text-align:center;"| Incineration; Dumping in trash
+| style="text-align:center;"| Will burn at high temperatures, releasing carbon oxides, water vapors and soot
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Harmful for the environment
+|-
+| style="text-align:center;"| [[Polytetrafluoroethylene]]
+| style="text-align:center;"| Not required; Can simply be dumped in trash
+| style="text-align:center;"| Generates toxic fluorine, hydrogen fluoride, fluorocarbons and carbon oxide vapors
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Resistant to most corrosive chemicals, cannot be digested by wildlife
+|-
+| style="text-align:center;"| [[Portland cement]]
+| style="text-align:center;"| Hydration, followed by recycling, dumping in trash, ground, etc.
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Non-hydrated cement is hazardous to environment, animals and plants; hydrated solid is generally non-toxic; Production of cement is extremely harmful to environment
+|-
+| style="text-align:center;"| [[Potassium antimony tartrate]]
+| style="text-align:center;"| Pyrolysis, followed by taking the resulting slag to disposal facilities
+| style="text-align:center;"| Gives off carbon oxides and water vapors, leaving potassium antimony oxide slag behind
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Hazardous to wildlife
+|-
+| style="text-align:center;"| [[Potassium azide]]
+| style="text-align:center;"| Acidified sodium nitrite, nitrous acid
+| style="text-align:center;"| Detonates and gives off nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Potassium bicarbonate]]
+| style="text-align:center;"| Any acid will do
+| style="text-align:center;"| Above 292 °C decomposes to potassium carbonate and above 891 °C will yield potassium oxide and carbon dioxide, which is quickly reabsorbed as it cools
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Excess may increase the concentration of potassium in the dumping area
+|-
+| style="text-align:center;"| [[Potassium bismuthate]]
+| style="text-align:center;"| Hydrolysis; neutralization with hydrogen peroxide
+| style="text-align:center;"| Breaks down to its constituent oxides, both dry and as solution
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Dangerous to organisms due to its strong oxidizing properties; high amounts of bismuth are toxic
+|-
+| style="text-align:center;"| [[Potassium bisulfate]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate
+| style="text-align:center;"| Decomposes to high temperatures releasing water vapors and sulfur trioxide
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Decreases the soil pH, high levels of sodium are toxic for plants
+|-
+| style="text-align:center;"| [[Potassium bisulfite]]
+| style="text-align:center;"| Bleach or hydrogen peroxide can be used if desired
+| style="text-align:center;"| Decomposes to release sulfur dioxide and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| High levels of sulfur dioxide are toxic for organisms
+|-
+| style="text-align:center;"| [[Potassium bitartrate]]
+| style="text-align:center;"| Not required; can be disposed in anyway
+| style="text-align:center;"| Decomposes, releasing combustion gasses, carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, low toxicity; occurs during wine fermentation
+|-
+| style="text-align:center;"| [[Potassium bromate]]
+| style="text-align:center;"| Reduction with thiosulfate
+| style="text-align:center;"| Decomposes to potassium bromide and oxygen
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| No
+| style="text-align:center;"| Toxic to plants, suspected carcinogen
+|-
+| style="text-align:center;"| [[Potassium bromide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| May give off bromine vapors in the presence of water at high temperatures
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Bromide ions pose little toxicity to wildlife in small amounts
+|-
+| style="text-align:center;"| [[Potassium carbonate]]
+| style="text-align:center;"| Any acid will do
+| style="text-align:center;"| No, very high temperatures decompose it to potassium oxide and carbon dioxide, which is quickly reabsorbed as it cools
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Excess may increase the soil level of potassium in the dumping area
+|-
+| style="text-align:center;"| [[Potassium chlorate]]
+| style="text-align:center;"| Reduction with metabisulfite, sulfite or bisulfite; a mixture of sulfuric acid and ferric ammonium sulfate can also be used
+| style="text-align:center;"| Melts and disproportionates to potassium perchlorate and potassium chloride
+| style="text-align:center;"| Small amounts can be dumped, as household bleach already contains a small percentage of chlorates, especially if it's old; Do not dump large quantities
+| style="text-align:center;"| No
+| style="text-align:center;"| Toxic to plants, was used as a weedkiller in the past
+|-
+| style="text-align:center;"| [[Potassium chloride]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Melts, not useful
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, unless the soil is chloride sensitive
+| style="text-align:center;"| Presence of chlorides may have a harmful effect to some plants
+|-
+| style="text-align:center;"| [[Potassium chlorochromate]]
+| style="text-align:center;"| Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH
+| style="text-align:center;"| Decomposes above 290 °C, releasing oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) is a potent carcinogen and very toxic to organisms
+|-
+| style="text-align:center;"| [[Potassium chromate]]
+| style="text-align:center;"| Neutralization with a reducing agent, such as ascorbic acid sodium metabisulfite, sulfite, bisulfite at acidic pH
+| style="text-align:center;"| Decomposes above 1000 °C, releasing oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are powerful carcinogens and very toxic to organisms
+|-
+| style="text-align:center;"| [[Potassium cyanide]]
+| style="text-align:center;"| Oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas
+| style="text-align:center;"| Melts and may oxidize in oxygen-rich atmosphere
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Highly toxic for all wildlife
+|-
+| style="text-align:center;"| [[Potassium dichromate]]
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH
+| style="text-align:center;"| Breaks down, releasing oxygen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
+|-
+| style="text-align:center;"| [[Potassium ferrate]]
+| style="text-align:center;"| Any acid, hot water
+| style="text-align:center;"| Breaks down to iron(III) oxide and potassium hydroxide, best in the presence of moisture
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| Dangerous to wildlife in short term
+|-
+| style="text-align:center;"| [[Potassium ferricyanide]]
+| style="text-align:center;"| Not required for small amounts, dumped in trash
+| style="text-align:center;"| Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide
+| style="text-align:center;"| Yes, but small amounts
+| style="text-align:center;"| Yes, but small amounts
+| style="text-align:center;"| Low toxicity to organisms, though tends to break down under UV light
+|-
+| style="text-align:center;"| [[Potassium ferrocyanide]]
+| style="text-align:center;"| Not required for small amounts, dumped in trash
+| style="text-align:center;"| Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide
+| style="text-align:center;"| Yes, but small amounts
+| style="text-align:center;"| Yes, but small amounts
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Potassium hexachlorostannate]]
+| style="text-align:center;"| Precipitate to SnO<sub>2</sub>
+| style="text-align:center;"| Melts
+| style="text-align:center;"| Dilute it first
+| style="text-align:center;"| Dilute it first
+| style="text-align:center;"| Unknown environmental effects
+|-
+| style="text-align:center;"| [[Potassium hydrogen phthalate]]
+| style="text-align:center;"| Oxidation with oxidizing solutions, such as chromic acid, Fenton's reagent, piranha solution
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| Dilute it with plenty of water before release
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Dangerous to environment in large amounts
+|-
+| style="text-align:center;"| [[Potassium hydroxide]]
+| style="text-align:center;"| Any acid, carbon dioxide
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Neutralize first; neutralized is a good source of potassium for plants
+| style="text-align:center;"| Dangerous to wildlife in short term
+|-
+| style="text-align:center;"| [[Potassium hypochlorite]]
+| style="text-align:center;"| Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide
+| style="text-align:center;"| Disproportionates to potassium chlorate and potassium chloride, giving off chlorine
+| style="text-align:center;"| Yes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic to organisms, especially aquatic ones
+|-
+| style="text-align:center;"| [[Potassium iodate]]
+| style="text-align:center;"| Reduction to potassium iodide; recycling
+| style="text-align:center;"| Decomposes, releasing oxygen, and iodine at high enough temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potassium iodate may be harmful to organisms
+|-
+| style="text-align:center;"| [[Potassium iodide]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| May release iodine vapors in the presence of water
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to wildlife
+|-
+| style="text-align:center;"| [[Potassium manganate]]
+| style="text-align:center;"| Any reducing agents, such as oxalic acid, hydrogen peroxide
+| style="text-align:center;"| Breaks down to manganese oxide and alkali
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Deadly to small organisms, dangerous to organisms in short term
+|-
+| style="text-align:center;"| [[Potassium metabisulfite]]
+| style="text-align:center;"| Bleach
+| style="text-align:center;"| Breaks down to release sulfur oxides
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Dangerous to small organisms
+|-
+| style="text-align:center;"| [[Potassium nitrate]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Gives off nitrogen oxides at very high temperatures; burns in presence of organic compounds, releasing carbon oxides, nitrogen and leaving behind alkaline slag
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Excellent fertilizer, though may lead to uncontrolled algae growth if dumped in water bodies
+|-
+| style="text-align:center;"| [[Potassium nitrite]]
+| style="text-align:center;"| Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to potassium carbonate or sulfate
+| style="text-align:center;"| Decomposes to form potassium oxide/hydroxide and releases nitrogen oxides fumes
+| style="text-align:center;"| Yes, but not recommended unless diluted
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Unlike nitrates, nitrites are poor source of nitrogen for plants; Nitrites are toxic for most animals due to the formation of nitrosamines
+|-
+| style="text-align:center;"| [[Potassium perchlorate]]
+| style="text-align:center;"| Reduction with metallic iron under UV light in the absence of air
+| style="text-align:center;"| Oxidizes flammable materials, burning them
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Hazardous to aquatic life
+|-
+| style="text-align:center;"| [[Potassium periodate]]
+| style="text-align:center;"| Reduction to potassium iodide; recycling
+| style="text-align:center;"| Decomposes, releasing oxygen, and iodine at high enough temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Potassium periodate may be harmful to organisms
+|-
+| style="text-align:center;"| [[Potassium permanganate]]
+| style="text-align:center;"| Hydrogen peroxide
+| style="text-align:center;"| Decomposes to manganese dioxide at high temperatures
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
+|-
+| style="text-align:center;"| [[Potassium peroxochromate]]
+| style="text-align:center;"| Potassium/sodium sulfite/metabisulfite/thiosulfate, ascorbic acid at acidic pH
+| style="text-align:center;"| Detonates, releasing potassium chromate, chromium(III) oxide fumes
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Cr(VI) is harmful for the environment
+|-
+| style="text-align:center;"| [[Potassium peroxymonosulfate]]
+| style="text-align:center;"| Alkaline solution, sodium carbonate in water
+| style="text-align:center;"| Decomposes, releasing oxygen
+| style="text-align:center;"| Recommended be neutralized first
+| style="text-align:center;"| Must be neutralized first
+| style="text-align:center;"| Dangerous to the environment in short term
+|-
+| style="text-align:center;"| [[Potassium persulfate]]
+| style="text-align:center;"| Pyrolysis, various reducing agents
+| style="text-align:center;"| Decomposes
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Strong oxidizer, toxic for wildlife
+|-
+| style="text-align:center;"| [[Potassium rhodizonate]]
+| style="text-align:center;"| Not always required; can be dumped in trash or poured down the drain
+| style="text-align:center;"| Releases carbon oxides, soot and leaves behind potassium carbonate
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, low toxicity
+|-
+| style="text-align:center;"| [[Potassium sodium tartrate]]
+| style="text-align:center;"| Not always required; can be disposed in anyway
+| style="text-align:center;"| Releases combustion gasses and leaves behind sodium and potassium carbonate
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, low toxicity
+|-
+| style="text-align:center;"| [[Potassium sorbate]]
+| style="text-align:center;"| Not required; can be poured down the drain or dumped in trash
+| style="text-align:center;"| Will decompose at high temperatures to release various hydrocarbons, carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Large quantities may be harmful to water bodies and small animals
+|-
+| style="text-align:center;"| [[Potassium sulfate]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Releases sulfur oxides at very high temperatures
+| style="text-align:center;"| Yes
+| style="text-align:center;"| OH YES
+| style="text-align:center;"| Safe, good potassium source for plants
+|-
+| style="text-align:center;"| [[Potassium sulfite]]
+| style="text-align:center;"| Not required, simply pour down the drain; Bleach or hydrogen peroxide can be used if desired
+| style="text-align:center;"| Decomposes to release sulfur dioxide
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes, but not recommended
+| style="text-align:center;"| Oxidation of aqueous potassium sulfite to sulfate reduces the amount of dissolved oxygen from water bodies
+|-
+| style="text-align:center;"| [[Potassium tert-butoxide]]
+| style="text-align:center;"| Dissolution in large amounts of water; poured down the drain
+| style="text-align:center;"| Decomposes to release carbon oxides, leaving behind basic potash
+| style="text-align:center;"| Strongly dilute it first
+| style="text-align:center;"| Strongly dilute it first
+| style="text-align:center;"| ''tert''-Butanol has low environmental impact
+|-
+| style="text-align:center;"| [[Propane]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Burns in the presence of oxygen
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Not possible
+| style="text-align:center;"| Contributes to the greenhouse effect
+|-
+| style="text-align:center;"| [[Propanol]]
+| style="text-align:center;"| Incineration
+| style="text-align:center;"| Flammable, gives off carbon dioxide and water vapor
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Dangerous for wildlife and aquatic life
+|-
+| style="text-align:center;"| [[Propionaldehyde]]
+| style="text-align:center;"| Incineration; Sodium hydroxide
+| style="text-align:center;"| Generates carbon oxides and water vapors; some will evaporate when heated
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and harmful to the wildlife
+|-
+| style="text-align:center;"| [[Propionic acid]]
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides; neutralized solution can be safely poured down the drain
+| style="text-align:center;"| Flammable (high concentrations), no dangerous combustion products, though the smoke will have a rancid smell
+| style="text-align:center;"| Yes, but recommended to neutralize first
+| style="text-align:center;"| Neutralize first
+| style="text-align:center;"| Safe, biodegradable; avoid dumping large amounts, kills microbial lifeform
+|-
+| style="text-align:center;"| [[Propionic anhydride]]
+| style="text-align:center;"| Diluted solution of NaOH or KOH
+| style="text-align:center;"| Flammable, no dangerous combustion products
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Biodegradable; avoid dumping large amounts, acidifies soil
+|-
+| style="text-align:center;"| [[Propylene carbonate]]
+| style="text-align:center;"| Incineration, first mix it with a more flammable solvent
+| style="text-align:center;"| Burns in the presence of oxygen
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Propylene glycol]]
+| style="text-align:center;"| Not required, though it can be mixed with a flammable solvent and burned
+| style="text-align:center;"| Generates carbon oxides and water vapor, as well as other toxic pyrolysis compounds
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Little toxic effect on aquatic wildlife
+|-
+| style="text-align:center;"| [[Propylene glycol dinitrate]]
+| style="text-align:center;"| Photolysis; Hydrolysis with cold sodium hydroxide solution
+| style="text-align:center;"| Violent detonation
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to organisms; nitrate source for plants
+|-
+| style="text-align:center;"| [[Propylene oxide]]
+| style="text-align:center;"| Incineration; Hydrolysis
+| style="text-align:center;"| Burns, giving off combustion gases
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic and dangerous for all wildlife
+|-
+| style="text-align:center;"| [[Prussian blue]]
+| style="text-align:center;"| Hydrogen peroxide, bleach
+| style="text-align:center;"| May give off carbon oxides and nitrogen gasses at high temperatures, as well as cyanide
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Contact with strong acids may release hydrogen cyanide
+|-
+| style="text-align:center;"| [[Pumice]]
+| style="text-align:center;"| Not required; dump it in trash; mix it with concrete
+| style="text-align:center;"| Not useful
+| style="text-align:center;"| Yes (powder or fine grains only, with plenty of water)
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Purple acid]]
+| style="text-align:center;"| Dilution in water followed by addition of NaOH solution
+| style="text-align:center;"| Decomposes to sulfuric acid, NOx
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Corrosive and toxic
+|-
+| style="text-align:center;"| [[Pyranine]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| Breaks down to combustion gasses and soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Pyridine]]
+| style="text-align:center;"| Incineration in a special incinerator; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot, amines and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Pyruvic acid]]
+| style="text-align:center;"| Any base, carbonate, bicarbonate, alkaline-earth oxide
+| style="text-align:center;"| Gives off carbon dioxide, water vapors and other side products
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Safe, can be used as nourishment by organisms; Important role in Krebs cycle
+|-
+| style="text-align:center;"| [[Quinine]]
+| style="text-align:center;"| Dumped in trash, poured down the drain
+| style="text-align:center;"| Decomposes, releasing carbon oxides, water vapors, soot, pyridine derivatives
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity, though harmful for microorganisms
+|-
+| style="text-align:center;"| [[Quinoline]]
+| style="text-align:center;"| Incineration; Oxidation with Fenton's reagent
+| style="text-align:center;"| Gives off carbon oxides, water vapors, soot, amines and nitrogen
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[Raney nickel]]
+| style="text-align:center;"| Dissolved in acid, followed by recovery of nickel and aluminium<br>Taken to hazardous waste disposal centers
+| style="text-align:center;"| Melts at 1455 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Toxic to wildlife
+|-
+| style="text-align:center;"| [[RDX]]
+| style="text-align:center;"| Incineration, done outside; Oxidation with Fenton's reagent; Hot aqueous solution containing sodium hydroxide and sodium tetraborate
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Displays moderate toxicity to aquatic life; RDX can be degraded by the fungus Phanaerocheate chrysosporium
+|-
+| style="text-align:center;"| [[Resiniferatoxin]]
+| style="text-align:center;"| Not required at low concentrations; high concentrations may require an oxidizer, like bleach
+| style="text-align:center;"| Generates irritant smoke, carbon dioxide, soot and water vapor
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Harmful for mammals at high concentrations, otherwise relative safe, biodegradable; Occurs naturally
+|-
+| style="text-align:center;"| [[Resorcinol]]
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
+| style="text-align:center;"| Generates smoke, carbon dioxide and water vapors
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Yes, but dilute it first
+| style="text-align:center;"| Relative safe, biodegradable; Occurs naturally in small amounts
+|-
+| style="text-align:center;"| [[Rhodamine B]]
+| style="text-align:center;"| Not always required, any method will do
+| style="text-align:center;"| Decomposes, releases combustion gasses, POCs and VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Unknown effects, doesn't appear to be harmful
+|-
+| style="text-align:center;"| [[Ribitol]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Yields carbon oxides, water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity
+|-
+| style="text-align:center;"| [[Ricinoleic acid]]
+| style="text-align:center;"| Incineration; Not always required
+| style="text-align:center;"| Gives off carbon dioxide and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to environment in small amounts
+|-
+| style="text-align:center;"| [[Rose's metal]]
+| style="text-align:center;"| Recycling; Wastes should be taken to hazardous metal disposal centers
+| style="text-align:center;"| Melts at 95 °C
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| While bismuth and tin don't present great hazard to environment, lead does
+|-
+| style="text-align:center;"| [[Rosocyanine]]
+| style="text-align:center;"| Not required
+| style="text-align:center;"| Breaks down to carbon oxides and water vapors
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to organisms
+|-
+| style="text-align:center;"| [[Rubber]]
+| style="text-align:center;"| Recycling; Taken to waste disposal centers; Dumped in trash
+| style="text-align:center;"| Decomposes and ignites, releasing large amounts of black smoke, soot, VOCs
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Natural rubber has low toxicity and is biodegradable; Synthetic and vulcanized rubber do not easily break down in the environment and are harmful for nature
+|-
+| style="text-align:center;"| [[Rubidium azide]]
+| style="text-align:center;"| Acidified sodium nitrite, nitrous acid; recycling of rubidium
+| style="text-align:center;"| Detonates and gives off nitrogen gas
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Very toxic for wildlife
+|-
+| style="text-align:center;"| [[Rubidium chloride]]
+| style="text-align:center;"| Recycling; Taken to waste disposal centers
+| style="text-align:center;"| Not useful in any way
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Rubidium hydroxide]]
+| style="text-align:center;"| Neutralization with any acid, carbon dioxide; recycling;
+| style="text-align:center;"| Not useful; highly corrosive when hot to glass, most common metals
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Dangerous to wildlife in short term (highly corrosive); Rubidium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Rubidium nitrate]]
+| style="text-align:center;"| Recycling; Taken to waste disposal centers
+| style="text-align:center;"| Decomposes to rubidium nitrite above ~300 °C
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Rubidium nitrite]]
+| style="text-align:center;"| Recycling; Taken to waste disposal centers
+| style="text-align:center;"| Decomposes above 450 °C
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Yes, though best to recycle it
+| style="text-align:center;"| Dangerous to organisms in very high concentrations; Rubidium ions have similar toxicity to those of sodium and potassium
+|-
+| style="text-align:center;"| [[Safrole]]
+| style="text-align:center;"| Incineration; Not always required
+| style="text-align:center;"| Breaks down to combustion gasses, soot
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to wildlife, occurs naturally
+|-
+| style="text-align:center;"| [[Salicylic acid]]
+| style="text-align:center;"| Not always required
+| style="text-align:center;"| Breaks down to phenol; at higher temperatures gives off carbon oxides, water vapors, soot and VOCs
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Yes
+| style="text-align:center;"| Low toxicity to environment, occurs naturally
+|-
+| style="text-align:center;"| [[Schweizer's reagent]]
+| style="text-align:center;"| Any acid
+| style="text-align:center;"| Breaks down to copper(I) oxide, gives off water vapors and ammonia
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
+| style="text-align:center;"| Copper ions and ammonia are toxic to most animals, especially small ones; ammonia can be a source of nitrogen for plants
+|-
+| style="text-align:center;"| [[Scopolamine]]
+| style="text-align:center;"| Hydrolyzed and diluted; Can be destroyed using a strong oxidizing mixture for complete neutralization
+| style="text-align:center;"| At very high temperatures decomposes to release carbon dioxide, water vapors, nitrogen, soot
+| style="text-align:center;"| Not recommended
+| style="text-align:center;"| Dilute first
+| style="text-align:center;"| Harmful and toxic to animals; occurs naturally
+|-
+| style="text-align:center;"| [[sec-Butanol|''sec''-Butanol]]
+| style="text-align:center;"| Incineration, if no peroxides present; If peroxides are present, neutralize them with a reducing agent such as ferrous sulfate, sodium bisulfite or metabisulfite in excess, then incinerate; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Do not dump
+| style="text-align:center;"| Poses toxicity to wildlife, water bodies
 |-
-| [[1,4-Dioxane]]
+| style="text-align:center;"| [[Silicon carbide]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Surface oxidation at high temperatures in oxygen; decomposes at its melting point
-|
+| style="text-align:center;"| Not recommended, may clog the plumbing
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Inert, safe for the environment
 |-
-| [[2,2,4-Trimethylpentane]]
+| style="text-align:center;"| [[Silicon dioxide]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| At high temperatures results in melting; Can be used to indurate crystalline silica
-|
+| style="text-align:center;"| Not recommended, may clog the plumbing
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Finely divided silica is dangerous for fauna
 |-
-| [[]]
+| style="text-align:center;"| [[Silver acetate]]
-|
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|
+| style="text-align:center;"| Breaks down to metallic silver, water and carbon dioxide at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[]]
+| style="text-align:center;"| [[Silver acetylide]]
-|
+| style="text-align:center;"| Addition of water, followed by careful addition of acid
-|
+| style="text-align:center;"| Detonates
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| Silver particles may be harmful for wildlife
 |-
-| [[Acetic acid]]
+| style="text-align:center;"| [[Silver azide]]
-| Bicarbonates, carbonates, bases, oxides
+| style="text-align:center;"| Nitrous acid, ammonium acetate, sodium dichromate
-| Flammable (high concentrations), no dangerous combustion products
+| style="text-align:center;"| Detonates, releasing silver particles and nitrogen gas
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Safe, biodegradable; avoid dumping large amounts, acidifies soil
+| style="text-align:center;"| Very toxic for wildlife
 |-
-| [[Acetic anhydride]]
+| style="text-align:center;"| [[Silver bromide]]
-| Bicarbonates, carbonates, bases, oxides
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-| Flammable, no dangerous combustion products
+| style="text-align:center;"| Breaks down to metallic silver and bromine at high temperatures
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Biodegradable; avoid dumping large amounts, acidifies soil
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Acetone]]
+| style="text-align:center;"| [[Silver carbonate]]
-| Oxidation, reducing, photolysis
+| style="text-align:center;"| Photolysis; Reduction with a reducing agent like ascorbic acid or formaldehyde; Recycling of silver
-| Flammable, no dangerous combustion products
+| style="text-align:center;"| Breaks down to metallic silver, oxygen and carbon dioxide above 120 °C
-| Not advised
+| style="text-align:center;"| DO NOT DUMP
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Biodegradable; not advised
+| style="text-align:center;"| Toxic to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[Acetone peroxide]]
+| style="text-align:center;"| [[Silver chlorate]]
-| Photolysis, detonation in safe area
+| style="text-align:center;"| Treatment with aq. NaOH to yield silver oxide, which is recycled; chlorate reduced to chloride with a reducing agent
-| Explosive, not recommended
+| style="text-align:center;"| Decomposes if heated gently, detonates otherwise
-| Not advised
+| style="text-align:center;"| DO NOT DUMP
-| Not advised
+| style="text-align:center;"| DO NOT DUMP
-| Biodegradable; not advised
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested; chlorates are harmful for organisms
 |-
-| [[]]
+| style="text-align:center;"| [[Silver chloride]]
-|
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|
+| style="text-align:center;"| Breaks down to metallic silver and chlorine at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Acetylene]]
+| style="text-align:center;"| [[Silver(I) fluoride]]
-| Oxidation, photolysis
+| style="text-align:center;"| Reduction with a reducing agent like ascorbic acid or formaldehyde; Recycling of silver
-| Dangerously flammable
+| style="text-align:center;"| Melts above 435 °C
-| Not possible
+| style="text-align:center;"| DO NOT DUMP
-| Not possible
+| style="text-align:center;"| DO NOT DUMP
-| Biodegradable
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Acetylsalicylic acid]]
+| style="text-align:center;"| [[Silver formate]]
-|Any base
+| style="text-align:center;"| Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible
-|Not particularly helpful
+| style="text-align:center;"| Explodes, releasing carbon dioxide and silver powder
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|Biodegradable
+| style="text-align:center;"| Potentially harmful to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[]]
+| style="text-align:center;"| [[Silver fulminate]]
-|
+| style="text-align:center;"| Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible
-|
+| style="text-align:center;"| Explodes, releasing oxygen, nitrogen, carbon oxides and silver powder
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[Aluminium chloride]]
+| style="text-align:center;"| [[Silver iodide]]
-|Treatment with water, precipitation with a base
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|No effect; Water solutions however will give off hydrogen chloride vapors
+| style="text-align:center;"| Melts and breaks down to metallic silver and iodine at high temperatures
-|Not advised
+| style="text-align:center;"| DO NOT DUMP
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Aluminium nitrate]]
+| style="text-align:center;"| [[Silver nitrate]]
-|
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|
+| style="text-align:center;"| Breaks down to metallic silver, oxygen and nitrogen dioxide at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[Ammonia]]
+| style="text-align:center;"| [[Silver nitrite]]
-|Oxidation, neutralization with acids
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|At high concentrations
+| style="text-align:center;"| Breaks down to metallic silver, oxygen and nitrogen oxides at high temperatures
-|Not possible (gaseous), safe to pour (as solution)
+| style="text-align:center;"| DO NOT DUMP
-|Not possible (gaseous), safe to pour (as solution)
+| style="text-align:center;"| DO NOT DUMP
-|Biodegradable
+| style="text-align:center;"| Toxic to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[Ammonium acetate]]
+| style="text-align:center;"| [[Silver oxalate]]
-|Unnecessary
+| style="text-align:center;"| Photolysis; Reduction with potassium thiocyanate or hydrochloric acid; Recycling of silver if possible
-|<nowiki>--</nowiki>
+| style="text-align:center;"| Explodes, releasing carbon dioxide and silver powder
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-| Safe, biodegradable
+| style="text-align:center;"| Potentially harmful to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[Ammonium bicarbonate]]
+| style="text-align:center;"| [[Silver oxide]]
-|Pyrolysis, hydroxides, acids
+| style="text-align:center;"| Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-| Decomposes on heating
+| style="text-align:center;"| Breaks down to metallic silver and oxygen at high temperatures
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|Oh yes!
+| style="text-align:center;"| DO NOT DUMP
-| Safe, good fertilizer (nitrogen source)
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Ammonium nitrate]]
+| style="text-align:center;"| [[Silver perchlorate]]
-|Pyrolysis, Hydroxides, carbonates
+| style="text-align:center;"| Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-| Emits [[nitrous oxide]], may explode if the temperature is too high
+| style="text-align:center;"| Breaks down to metallic silver, silver chloride, oxygen, chlorine at high temperatures
-|Yes
+| style="text-align:center;"| DO NOT DUMP
-|Oh yes!
+| style="text-align:center;"| DO NOT DUMP
-| Safe, good fertilizer (nitrogen source)
+| style="text-align:center;"| Toxic to wildlife in short term; silver microparticles are harmful if ingested
 |-
-| [[]]
+| style="text-align:center;"| [[Silver permanganate]]
-|
+| style="text-align:center;"| Reduction in aq. solution to silver metal and manganese oxide using a reducing agent, like ascorbic acid
-|
+| style="text-align:center;"| Decomposes to silver and manganese dioxide, may explode at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Manganese dioxide is toxic if ingested; silver particles may cause argyria
 |-
-| [[Asbestos]]
+| style="text-align:center;"| [[Silver sulfate]]
-|
+| style="text-align:center;"| Photolysis; Reduction with a more reactive metal or a reducing agent like ascorbic acid; Recycling of silver
-|
+| style="text-align:center;"| Breaks down to metallic silver, oxygen and/or sulfur dioxide/trioxide at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife; silver microparticles are harmful if ingested
 |-
-| [[Ascorbic acid]]
+| style="text-align:center;"| [[Slag]]
-| Unnecessary
+| style="text-align:center;"| Unnecessary
-|
+| style="text-align:center;"| Not useful, already byproduct of high-temperature reactions
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Yes
+| style="text-align:center;"| DO NOT DUMP
-| Safe, biodegradable
+| style="text-align:center;"| Slag is harmful for environment, especially if heavy metals are present
 |-
-| [[Barium ferrate]]
+| style="text-align:center;"| [[Smokeless powder]]
-|
+| style="text-align:center;"| Controlled incineration; dumping in soil
-|
+| style="text-align:center;"| Ignites
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Yes, but in low amounts
-|
+| style="text-align:center;"| Somewhat good as a fertilizer, though expensive; Acts as a slow-release nitrogen source for plants
 |-
-| [[Barium manganate]]
+| style="text-align:center;"| [[Soap]]
-| Sulfuric acid
+| style="text-align:center;"| Poured down the drain
-|
+| style="text-align:center;"| Decomposes and burns at high temperatures, releasing lots of soot, carbon dioxide and water vapors
-|Not advised
+| style="text-align:center;"| Yes
-|Yes
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants; anionic surfactants are harmful for environment
 |-
-| [[Basic lead chromate]]
+| style="text-align:center;"| [[Sodium acetate]]
-|
+| style="text-align:center;"| Not always required
-|
+| style="text-align:center;"| Results in sodium carbonate and acetone at high temperatures, then carbon dioxide and water vapors
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Benzene]]
+| style="text-align:center;"| [[Sodium acetylsalicylate]]
-| Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Pyrolysis; Not always required
-| Generates dangerous combustion products
+| style="text-align:center;"| Gives off carbon dioxide, water vapors and soot
-| DO NOT DUMP
+| style="text-align:center;"| Yes
-| No
+| style="text-align:center;"| Not recommended
-| Avoid releasing in environment
+| style="text-align:center;"| Sodium is toxic for plants
 |-
-| [[Bis(ethylenediamine)copper(II) perchlorate]]
+| style="text-align:center;"| [[Sodium aluminium hydride]]
-| Crystallize and ignite safely
+| style="text-align:center;"| Neutralization with an alkali or carbonate solution; adding the compound in small bits in large volumes of water and alcohol
-| Detonates
+| style="text-align:center;"| Decomposes to release hydrogen
-| DO NOT DUMP
+| style="text-align:center;"| DO NOT DUMP
-| No
+| style="text-align:center;"| DO NOT DUMP
-| Copper kills aquatic life and plant roots
+| style="text-align:center;"| Corrosive to organisms, will increase the aluminium concentration in soil or water
 |-
-| [[Bismuth trioxide]]
+| style="text-align:center;"| [[Sodium amide]]
-| Reduced to bismuth metal
+| style="text-align:center;"| Cooled alcoholic solution with small amounts of a weak acid; addition of amide in small amounts
-| Will oxidize anything (yes, platinum too) when molten
+| style="text-align:center;"| Ignites in air
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely harmful to environment in short term
 |-
-| [[Boric acid]]
+| style="text-align:center;"| [[Sodium azide]]
-|
+| style="text-align:center;"| Sodium nitrite, nitrous acid
-|
+| style="text-align:center;"| Breaks down to sodium metal and gives off nitrogen gas
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Very toxic for wildlife
 |-
-| [[Boron trioxide]]
+| style="text-align:center;"| [[Sodium benzoate]]
-|
+| style="text-align:center;"| Not always required
-|
+| style="text-align:center;"| May give off benzene vapors
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes, but not in large quantities
-|
+| style="text-align:center;"| Too much sodium is harmful to plants; Reaction with certain compounds may release traces of benzene; otherwise safe, occurs naturally
 |-
-| [[Butanol]]
+| style="text-align:center;"| [[Sodium bicarbonate]]
-|
+| style="text-align:center;"| Any acid or base; not generally required
-|
+| style="text-align:center;"| Converts to sodium carbonate
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Butyl acetate]]
+| style="text-align:center;"| [[Sodium bismuthate]]
-|
+| style="text-align:center;"| Hydrolysis; neutralization with hydrogen peroxide
-|
+| style="text-align:center;"| Breaks down to its constituent oxides, both dry and as solution
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Dangerous to organisms due to its strong oxidizing properties; high amounts of bismuth are toxic
 |-
-| [[Caesium hydroxide]]
+| style="text-align:center;"| [[Sodium bisulfate]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Decreases the soil pH, high levels of sodium are toxic for plants
 |-
-| [[Calcium acetate]]
+| style="text-align:center;"| [[Sodium bisulfite]]
-|Pyrolysis
+| style="text-align:center;"| Not required; Bleach or hydrogen peroxide can be used if desired
-|Decomposes to calcium carbonate and acetone at high temperature
+| style="text-align:center;"| Decomposes to release sulfur dioxide
-|Yes
+| style="text-align:center;"| Yes
-|Yes
+| style="text-align:center;"| Yes, but not recommended
-|Biodegradable
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Calcium carbide]]
+| style="text-align:center;"| [[Sodium borohydride]]
-|
+| style="text-align:center;"| Neutralization with an alkali or carbonate solution; Slow addition in a large volume of water or alcohol
-|
+| style="text-align:center;"| Decomposes to release hydrogen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive to organisms, will increase the boron concentration in soil or water
 |-
-| [[Calcium carbonate]]
+| style="text-align:center;"| [[Sodium bromate]]
-|
+| style="text-align:center;"| Reduction with thiosulfate
-|
+| style="text-align:center;"| Decomposes to sodium bromide and oxygen
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Toxic to plants, suspected carcinogen
 |-
-| [[Calcium fluoride]]
+| style="text-align:center;"| [[Sodium bromide]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| May give off bromine vapors in the presence of water at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Bromide ions pose little toxicity to wildlife in small amounts
 |-
-| [[Calcium hydroxide]]
+| style="text-align:center;"| [[Sodium carbonate]]
-|
+| style="text-align:center;"| Any acid; Not generally required
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Calcium nitrate]]
+| style="text-align:center;"| [[Sodium chlorate]]
-|
+| style="text-align:center;"| Reduction with metabisulfite, sulfite or bisulfite; a mixture of sulfuric acid and ferric ammonium sulfate can also be used
-|
+| style="text-align:center;"| Melts and disproportionates to sodium perchlorate and sodium chloride
-|
+| style="text-align:center;"| Small amounts can be dumped, as household bleach already contains a small percentage of chlorates, especially if it's old; Do not dump large quantities though
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Toxic to plants, was used as a weedkiller in the past
 |-
-| [[Calcium sulfate]]
+| style="text-align:center;"| [[Sodium chloride]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Carbon dioxide]]
+| style="text-align:center;"| [[Sodium chlorite]]
-|
+| style="text-align:center;"| Reduction with metabisulfite, sulfite or bisulfite
-|
+| style="text-align:center;"| Melts and decomposes
-|
+| style="text-align:center;"| Small amounts can be dumped; Do not dump large quantities though
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Toxic to plants, animals, biocide
 |-
-| [[Carbon disulfide]]
+| style="text-align:center;"| [[Sodium chlorosulfonate]]
-|
+| style="text-align:center;"| Slow and careful addition to crushed ice; addition of a base to neutralize the acid
-|
+| style="text-align:center;"| Decomposes releasing sulfur trioxide and chlorine
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Highly corrosive, toxic; excess sodium harmful for plants
 |-
-| [[Carbon monoxide]]
+| style="text-align:center;"| [[Sodium chromate]]
-|
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH
-|
+| style="text-align:center;"| Breaks down, releasing oxygen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
 |-
-| [[Carbon monoxide]]
+| style="text-align:center;"| [[Sodium cyanide]]
-|
+| style="text-align:center;"| Oxidation with hydrogen peroxide, bleach, sodium thiosulfate to less harmful compounds, continued by oxidation to carbon dioxide and nitrogen gas
-|
+| style="text-align:center;"| Melts and may oxidize in oxygen-rich atmosphere
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Highly toxic for all wildlife
 |-
-| [[Carbon tetrachloride]]
+| style="text-align:center;"| [[Sodium cyanoborohydride]]
-|
+| style="text-align:center;"| Neutralization of cyanide; Slow decomposition in a large volume of water or alcohol
-|
+| style="text-align:center;"| Decomposes to release HCN, hydrogen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Cyanide is toxic to organisms, will increase the boron concentration in soil or water
 |-
-| [[Carbonic acid]]
+| style="text-align:center;"| [[Sodium dichromate]]
-|
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid at acidic pH
-|
+| style="text-align:center;"| Breaks down, releasing oxygen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Cr(VI) ions are carcinogenic and very toxic to organisms
 |-
-| [[Charcoal]]
+| style="text-align:center;"| [[Sodium dithionite]]
-|
+| style="text-align:center;"| Dilution in water, followed by bleach or hydrogen peroxide
-|
+| style="text-align:center;"| Breaks down to sodium sulfate, sodium sulfite, sodium thiosulfate, sulfur dioxide
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Oxidation may ignite flammable materials
 |-
-| [[Chevreul's salt]]
+| style="text-align:center;"| [[Sodium dodecyl sulfate]]
-|
+| style="text-align:center;"| Mixed with a flammable solvent and incinerated; Poured down the drain
-|
+| style="text-align:center;"| Gives off carbon oxides, water vapors, sulfur oxides
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Low environmental impact
 |-
-| [[Chloric acid]]
+| style="text-align:center;"| [[Sodium ethoxide]]
-|
+| style="text-align:center;"| Slow addition to a large volume of water, best with small amounts of a carboxylic acid, such as acetic or citric acid
-|
+| style="text-align:center;"| Breaks down to release flammable gasses
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic and very corrosive to most organisms; Raises pH in water bodies<br>High levels of sodium are toxic for plants
 |-
-| [[Chloroauric acid]]
+| style="text-align:center;"| [[Sodium ferrate]]
-|
+| style="text-align:center;"| Diluted organic solutions will reduce it to its constituent oxides
-|
+| style="text-align:center;"| Breaks down to its constituent oxides, both dry and as solution
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Not recommended due to its sodium content
-|
+| style="text-align:center;"| Dangerous to organisms due to its strong oxidizing properties
 |-
-| [[Chlorobutanol]]
+| style="text-align:center;"| [[Sodium fluoride]]
-|
+| style="text-align:center;"| Precipitate to calcium fluoride
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Dangerous to organisms, poisonous
 |-
-| [[Chloroform]]
+| style="text-align:center;"| [[Sodium formate]]
-| Destruction with aqueous sodium hydroxide, which can be aided by methanol or acetone; Oxidation with [[Fenton's reagent]]
+| style="text-align:center;"| Pyrolysis, best done in a kiln
-| Boils to form vapor, should not be attempted indoors
+| style="text-align:center;"| Decomposes to sodium oxalate, then carbonate, releasing carbon monoxide and water vapors
-| DO NOT DUMP
+| style="text-align:center;"| Yes
-| No
+| style="text-align:center;"| Not recommended due to its sodium content
-| May cause ozone depletion, dangerous to aquatic life
+| style="text-align:center;"| High levels of sodium are toxic to plants
 |-
-| [[Chromium(III) oxide]]
+| style="text-align:center;"| [[Sodium hexafluoroaluminate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Breaks down at high temperatures releasing aluminium fluoride, HF fumes
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Relative safe to environment, harmful for insects and small animals; occurs naturally
 |-
-| [[Chromium(III) sulfate]]
+| style="text-align:center;"| [[Sodium hexametaphosphate]]
-|
+| style="text-align:center;"| Not required; can be dumped in trash
-|
+| style="text-align:center;"| Breaks down to sodium polyphosphates and sodium oxide, giving off phosphorus oxide fumes at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Citric acid]]
+| style="text-align:center;"| [[Sodium hydrazide]]
-|
+| style="text-align:center;"| Slow addition of ice cold alcohol, the compound must be kept under chilled ether
-|
+| style="text-align:center;"| Detonates in contact with air
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| Explosive, flammable, hydrazide is extremely hazardous for the environment
 |-
-| [[Cobalt(II) chloride]]
+| style="text-align:center;"| [[Sodium hydride]]
-|
+| style="text-align:center;"| Neutralization with a concentrated alkali or carbonate solution, alcohols, long chain alcohols are preferred; best performed in an open area
-|
+| style="text-align:center;"| Decomposes to release hydrogen at very high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive to organisms, harmful to wildlife
 |-
-| [[Copper(I) chloride]]
+| style="text-align:center;"| [[Sodium hydroxide]]
-|
+| style="text-align:center;"| Any acid, carbon dioxide
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Dangerous to wildlife in short term; toxic to plants due to sodium ions
 |-
-| [[Copper(II) acetylsalicylate]]
+| style="text-align:center;"| [[Sodium hypochlorite]]
-|
+| style="text-align:center;"| Any reducing agent, such as sodium metabisulfite, bisulfite, sulfite, thiosulfate; Hydrogen peroxide
-|
+| style="text-align:center;"| Disproportionates to sodium chlorate and sodium chloride, giving off chlorine
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Very toxic to organisms, especially aquatic ones; High levels of sodium are toxic for plants
 |-
-| [[Copper(II carbonate)]]
+| style="text-align:center;"| [[Sodium hypophosphite]]
-|
+| style="text-align:center;"| Diluted cooled hydrogen peroxide solution
-|
+| style="text-align:center;"| Decomposes to disodium phosphate and phosphine
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful to organisms, especially aquatic ones
 |-
-| [[Copper(II) chloride]]
+| style="text-align:center;"| [[Sodium iodide]]
-| Precipitate as carbonate or reduce to copper metal using aluminum
+| style="text-align:center;"| Not required
-| Loses water, turns brown
+| style="text-align:center;"| May release iodine vapors in the presence of water
-| DO NOT DUMP
+| style="text-align:center;"| Yes
-| Yes but far from any agricultural plants
+| style="text-align:center;"| Yes
-| Kills aquatic life and plant roots
+| style="text-align:center;"| Low toxicity to wildlife
 |-
-| [[Copper(II) hydroxide]]
+| style="text-align:center;"| [[Sodium metabisulfite]]
-|
+| style="text-align:center;"| Bleach
-|
+| style="text-align:center;"| Breaks down to release sulfur oxides
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Toxic to most fauna; High levels of sodium are toxic for plants
 |-
-| [[Copper(II) nitrate]]
+| style="text-align:center;"| [[Sodium methoxide]]
-|
+| style="text-align:center;"| Dissolution in a large volume of water slowly, best with small amounts of a carboxylic acid, such as acetic acid
-|
+| style="text-align:center;"| Breaks down to release flammable gasses
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic and very corrosive to most organisms; Raises pH in water bodies<br>High levels of sodium are toxic for plants
 |-
-| [[Copper(II) oxide]]
+| style="text-align:center;"| [[Sodium methyl sulfate]]
-|
+| style="text-align:center;"| Addition in large amounts of water, followed by addition of aq. alkali
-|
+| style="text-align:center;"| Decomposes to dimethyl sulfate, DO NOT
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic
 |-
-| [[Copper(II) chromite]]
+| style="text-align:center;"| [[Sodium molybdate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Decomposes to molybdenum oxides and sodium hydroxide/oxide
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Used as fertilizer
 |-
-| [[Copper oxychloride]]
+| style="text-align:center;"| [[Sodium nitrate]]
-|
+| style="text-align:center;"| Not always required; Ammonium sulfate
-|
+| style="text-align:center;"| Not useful; may convert to sodium nitrite
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| While it is a good source of nitrogen for plants, high levels of sodium are generally undesired in soils
 |-
-| [[Copper(II) phosphate]]
+| style="text-align:center;"| [[Sodium nitrite]]
-|
+| style="text-align:center;"| Oxidation with sodium percarbonate, oxygen, ozone to nitrate; Thermal decomposition followed by conversion to sodium carbonate or sulfate
-|
+| style="text-align:center;"| Decomposes to form sodium oxide/hydroxide and releases nitrogen oxides fumes
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Unlike nitrates, nitrites are poor source of nitrogen for plants; High levels of sodium are generally undesired in soils; Nitrites are toxic for most animals
 |-
-| [[Copper(II) sulfate]]
+| style="text-align:center;"| [[Sodium nitroprusside]]
-|
+| style="text-align:center;"| Not required for small amounts, dumped in trash. Bleach can be used to neutralize the compound
-|
+| style="text-align:center;"| Breaks down to iron and potassium nitrides/oxides, releasing cyanide, carbon monoxide
-|
+| style="text-align:center;"| Yes, but small amounts
-|
+| style="text-align:center;"| Yes, but small amounts
-|
+| style="text-align:center;"| Low toxicity to organisms
 |-
-| [[Curcumin]]
+| style="text-align:center;"| [[Sodium orotate]]
-|
+| style="text-align:center;"| Pyrolysis; diluted and poured down the drain
-|
+| style="text-align:center;"| Decomposes on heating to release carbon oxides and various organic compounds
-|
+| style="text-align:center;"| Yes, if diluted
-|
+| style="text-align:center;"| Yes, if diluted
-|
+| style="text-align:center;"| May pose a threat to wildlife in large amounts due to its sodium content
 |-
-| [[Cyclohexane]]
+| style="text-align:center;"| [[Sodium oxalate]]
-|
+| style="text-align:center;"| Pyrolysis; poured down the drain
-|
+| style="text-align:center;"| Decomposes on heating to release carbon monoxide
-|
+| style="text-align:center;"| Yes, if diluted
-|
+| style="text-align:center;"| Yes, if diluted
-|
+| style="text-align:center;"| May pose a threat to wildlife in large amounts since it's a sodium salt; Occurs naturally as mineral
 |-
-| [[Dichloromethane]]
+| style="text-align:center;"| [[Sodium oxide]]
-|
+| style="text-align:center;"| Slow addition to diluted solution of phosphoric acid
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic for wildlife
 |-
-| [[Diethyl ether]]
+| style="text-align:center;"| [[Sodium perborate]]
-|
+| style="text-align:center;"| A reducing agent like sodium thiosulfate or sulfite; Generally not required though
-|
+| style="text-align:center;"| Decomposes to release water vapors and oxygen, leaving behind sodium borate
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Hydrogen peroxide in harmful for organisms; High levels of sodium and boron are toxic for plants
 |-
-| [[Diisopropyl ether]]
+| style="text-align:center;"| [[Sodium percarbonate]]
-|
+| style="text-align:center;"| Any acid; Iron(III) oxide or manganese dioxide can also be added for complete neutralization; Generally not required though
-|
+| style="text-align:center;"| Decomposes to release water vapors and oxygen, leaving behind sodium carbonate
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Hydrogen peroxide in harmful for organisms; High levels of sodium are toxic for plants
 |-
-| [[Dimethyl sulfoxide]]
+| style="text-align:center;"| [[Sodium perchlorate]]
-|
+| style="text-align:center;"| Reduction with metallic iron under UV light in the absence of air
-|
+| style="text-align:center;"| Burns in a mixture with flammable materials
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
 |-
-| [[Dimethylformamide]]
+| style="text-align:center;"| [[Sodium permanganate]]
-|
+| style="text-align:center;"| Hydrogen peroxide
-|
+| style="text-align:center;"| Decomposes to manganese dioxide and sodium oxide/hydroxide at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| The resulting manganese dioxide from the decomposition can be toxic if ingested by animals
 |-
-| [[Dipicolinic acid]]
+| style="text-align:center;"| [[Sodium peroxide]]
-|
+| style="text-align:center;"| Any acid and manganese dioxide
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic for wildlife
 |-
-| [[Disulfur dichloride]]
+| style="text-align:center;"| [[Sodium persulfate]]
-|
+| style="text-align:center;"| Pyrolysis, various reducing agents
-|
+| style="text-align:center;"| Decomposes
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Strong oxidizer, harmful for wildlife
 |-
-| [[Ethane]]
+| style="text-align:center;"| [[Sodium pyrosulfate]]
-|
+| style="text-align:center;"| Hydrolyzes in water to sulfuric acid; addition of a base to neutralize the acid
-|
+| style="text-align:center;"| Decomposes releasing sulfur trioxide
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Oxidizer, harmful; excess sodium harmful for plants
 |-
-| [[Ethanol]]
+| style="text-align:center;"| [[Sodium silicate]]
-|
+| style="text-align:center;"| Any acid
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Only in places without plant or animal life (construction sites, quarries, etc.)
-|
+| style="text-align:center;"| Sodium ions are toxic to plant roots
 |-
-| [[Ethyl acetate]]
+| style="text-align:center;"| [[Sodium sulfate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Ethylene glycol]]
+| style="text-align:center;"| [[Sodium sulfide]]
-|
+| style="text-align:center;"| Hydrogen peroxide, bleach
-|
+| style="text-align:center;"| May give off hydrogen sulfide in the presence of water at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
 |-
-| [[Ethylene glycol dinitrate]]
+| style="text-align:center;"| [[Sodium sulfite]]
-|
+| style="text-align:center;"| Not required; Bleach can be used if desired
-|
+| style="text-align:center;"| Decomposes to release sulfur dioxide
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| High levels of sodium are toxic for plants
 |-
-| [[Ethylenediamine]]
+| style="text-align:center;"| [[Sodium thiosulfate]]
-|
+| style="text-align:center;"| Bleach
-|
+| style="text-align:center;"| Gives off sulfur oxide gasses
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes, but not in large quantities
-|
+| style="text-align:center;"| Breaks down rapidly in the environment due to air and microorganisms, yielding sulfides and sulfates.
 |-
-| [[Formic acid]]
+| style="text-align:center;"| [[Sodium triacetoxyborohydride]]
-|
+| style="text-align:center;"| Slow decomposition in a large volume of water or alcohol
-|
+| style="text-align:center;"| Decomposes to release acetic acid, hydrogen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful, will increase the boron concentration in soil or water
 |-
-| [[Glycerol]]
+| style="text-align:center;"| [[Solochrome cyanine R]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Decomposes
-|
+| style="text-align:center;"| Dilute it first
-|
+| style="text-align:center;"| Dilute it first
-|
+| style="text-align:center;"| Unknown effects on the environemnt
 |-
-| [[Heptane]]
+| style="text-align:center;"| [[Sorbic acid]]
-|
+| style="text-align:center;"| Not needed
-|
+| style="text-align:center;"| Melts; Decomposes releasing carbon dioxide and water vapor at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Safe, nourishment for organisms, though harmful for bacteria
 |-
-| [[Hexane]]
+| style="text-align:center;"| [[Sorbitol]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Melts; Releases carbon dioxide and water vapor at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Cannot be digested by most organisms, but has no dangerous effects on wildlife
 |-
-| [[Hydrazoic acid]]
+| style="text-align:center;"| [[Stainless steel]]
-|
+| style="text-align:center;"| Recycling; Traces of stainless steel waste don't require chemical neutralization as SS is sufficiently inert that it can't do any significant damage to the environment. If magnetic, a magnet can be used to scoop all the pieces
-|
+| style="text-align:center;"| Not useful; melts above 1500 °C
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Stainless steel alloys contain chromium which will slowly leak in the environment and may increase the level of chromium in the environment; Some SS alloys may have nickel which is harmful to the environment
 |-
-| [[Hydrobromic acid]]
+| style="text-align:center;"| [[Starch]]
-|
+| style="text-align:center;"| Any disposal method
-|
+| style="text-align:center;"| Decomposes to release carbon oxides, water vapors
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Safe, biodegradable; Nourishment for almost all organisms
 |-
-| [[Hydrochloric acid]]
+| style="text-align:center;"| [[Steel]]
-|
+| style="text-align:center;"| Recycling; Steel waste don't require chemical neutralization as it's mostly iron which has low environmental impact. Since it's magnetic, a magnet can be used to scoop all steel leftovers
-|
+| style="text-align:center;"| Not useful; melts above 1300 °C
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Some steel alloys contain nickel which will leak in the environment which is harmful to the environment
 |-
-| [[Hydrofluoric acid]]
+| style="text-align:center;"| [[Strontium carbonate]]
-|
+| style="text-align:center;"| Any acid; Not required; Can be safely dumped in trash
-|
+| style="text-align:center;"| Breaks down to strontium oxide and carbon dioxide at high temperatures; reverts as it cools
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Strontium has little effect on environment
 |-
-| [[Hydrogen chloride]]
+| style="text-align:center;"| [[Strontium chloride]]
-|
+| style="text-align:center;"| Not required; Any soluble carbonate or sulfate
-|
+| style="text-align:center;"| Not useful; May release some HCl fumes if wet
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Chloride ions may be harmful to plants
 |-
-| [[Hydrogen peroxide]]
+| style="text-align:center;"| [[Strontium nitrate]]
-|
+| style="text-align:center;"| Not required; May be converted to strontium sulfate or just dumped in soil
-|
+| style="text-align:center;"| Breaks down to strontium oxide, oxygen and nitrogen dioxide at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Strontium has little effect on environment
 |-
-| [[Hydrogen sulfide]]
+| style="text-align:center;"| [[Strontium oxide]]
-|
+| style="text-align:center;"| Lots of water; any diluted acid
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Will burn grass on contact; strontium has little effect on environment
 |-
-| [[Hydroiodic acid]]
+| style="text-align:center;"| [[Strontium sulfate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Decomposes to strontium oxide at very high temperatures
-|
+| style="text-align:center;"| Yes, with lots and lots of water
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Low environmental impact, occurs naturally
 |-
-| [[Iron(II) sulfate]]
+| style="text-align:center;"| [[Strychnine]]
-|
+| style="text-align:center;"| Destruction with a strong oxidizer, like conc. bleach; May not be required for small amounts
-|
+| style="text-align:center;"| Decomposes releasing carbon oxides, nitrogen gas, water vapors and soot
-|
+| style="text-align:center;"| Yes, small amounts, strongly diluted
-|
+| style="text-align:center;"| Yes, small amounts, strongly diluted
-|
+| style="text-align:center;"| Extremely toxic to small animals; occurs naturally
 |-
-| [[Iron(II,III) oxide]]
+| style="text-align:center;"| [[Styphnic acid]]
-|
+| style="text-align:center;"| Careful and controlled destruction using an oxidizing solution; bubbling chlorine in a dil. acidified solution
-|
+| style="text-align:center;"| May explode
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely toxic to all organisms; metal salts are sensitive explosives
 |-
-| [[Iron(III) chloride]]
+| style="text-align:center;"| [[Styrene]]
-|
+| style="text-align:center;"| Oxidation with [[Fenton's reagent]]; Incineration with afterburner incinerators
-|
+| style="text-align:center;"| Generates dangerous combustion products
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Avoid releasing in environment, toxic, carcinogen
 |-
-| [[Iron(III) sulfate]]
+| style="text-align:center;"| [[Succinic acid]]
-|
+| style="text-align:center;"| Not always required, can be dumped in trash
-|
+| style="text-align:center;"| Decomposes releasing acrid smoke, carbon oxides, water vapors and soot
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Source of food for some organisms
 |-
-| [[Isobutanol]]
+| style="text-align:center;"| [[Succinonitrile]]
-|
+| style="text-align:center;"| Careful addition to bleach; Dissolved in a flammable solvent and incinerated
-|
+| style="text-align:center;"| Decomposes releasing cyanide
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Degradation releases free cyanide, which is extremely toxic to organisms
 |-
-| [[Isopropanol]]
+| style="text-align:center;"| [[Sucrose]]
-|
+| style="text-align:center;"| Not always required
-|
+| style="text-align:center;"| Turns into caramel if gently heated and soot at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Source of food for many small animals
 |-
-| [[Isopropyl nitrite]]
+| style="text-align:center;"| [[Sulfamic acid]]
-|
+| style="text-align:center;"| Aqueous solution of NaOH, slow addition; poured down the drain after neutralization
-|
+| style="text-align:center;"| Above 205 °C decomposes to water, sulfur trioxide, sulfur dioxide and nitrogen
-|
+| style="text-align:center;"| Yes, though preferably neutralized first
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful and corrosive for environment
 |-
-| [[Lead(II) acetate]]
+| style="text-align:center;"| [[Sulfanilamide]]
-|
+| style="text-align:center;"| Not required, small amounts can be poured down the drain or trash
-|
+| style="text-align:center;"| Decomposes releasing carbon and sulfur oxides, nitrogen gas and soot
-|
+| style="text-align:center;"| Yes, small amounts
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Toxic to microbial life and harmful to aquatic bodies
 |-
-| [[Lead(II) chromate]]
+| style="text-align:center;"| [[Sulfanilic acid]]
-|
+| style="text-align:center;"| Neutralization with a base; Destruction with an oxidizing agent, may not be required for small amounts
-|
+| style="text-align:center;"| Decomposes releasing carbon and sulfur oxides, nitrogen gas and soot
-|
+| style="text-align:center;"| Yes, small amounts
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Harmful to organisms and aquatic bodies
 |-
-| [[Lead(II) nitrate]]
+| style="text-align:center;"| [[Sulfolane]]
-|
+| style="text-align:center;"| Mixed with a more flammable solvent, followed by incineration; Oxidation with Fenton's reagent if it has too much water
-|
+| style="text-align:center;"| Results in carbon oxides, water vapors and sulfur dioxide
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Environmental effects unclear
 |-
-| [[Lead(II) oxide]]
+| style="text-align:center;"| [[Sulfur dichloride]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate, best as aqueous solution/suspension
-|
+| style="text-align:center;"| Boils off
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely corrosive and toxic to all organisms
 |-
-| [[Lead(II,IV) oxide]]
+| style="text-align:center;"| [[Sulfur dioxide]]
-|
+| style="text-align:center;"| Any base, bleach (solution); hydrogen sulfide, ammonia (gaseous)
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Not possible (gas)
-|
+| style="text-align:center;"| Not possible (gas)
-|
+| style="text-align:center;"| Contributes to acid rain
 |-
-| [[Lead(IV) acetate]]
+| style="text-align:center;"| [[Sulfur trioxide]]
-|
+| style="text-align:center;"| Dry calcium carbonate; ammonia
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Deadly and extremely corrosive to all life; contact with moist air produces sulfuric acid mist; contributes to acid rain
 |-
-| [[Limonene]]
+| style="text-align:center;"| [[Sulfur hexafluoride]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| May lead to sulfur dioxides and fluorine at very high temperatures
-|
+| style="text-align:center;"| Not possible
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Strong greenhouse effect
 |-
-| [[Lithium aluminium hydride]]
+| style="text-align:center;"| [[Sulfuric acid]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate;
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Only if it's followed by large amounts of water; Though best to neutralize it first
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and deadly to wildlife; Lowers soil pH; Corrosive to rocks
 |-
-| [[Lithium chloride]]
+| style="text-align:center;"| [[Sulfuryl chloride]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate;
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Neutralize it first
-|
+| style="text-align:center;"| Neutralize it first
-|
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
 |-
-| [[Lithium hydroxide]]
+| style="text-align:center;"| [[Tagatose]]
-|
+| style="text-align:center;"| Not required; can be disposed in any way
-|
+| style="text-align:center;"| Will decompose to caramel and carbon if heated too long
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Non-toxic to environment, nourishment for many organisms
 |-
-| [[Magnesium sulfate]]
+| style="text-align:center;"| [[Tannerite]]
-|
+| style="text-align:center;"| '''VERY controlled''' incineration
-|
+| style="text-align:center;"| Burns, almost never detonates
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| While ammonium nitrate is a good nitrogen source for plants, the aluminium and other impurities present are generally harmful for wildlife
 |-
-| [[Manganese dioxide]]
+| style="text-align:center;"| [[Tartaric acid]]
-|
+| style="text-align:center;"| Not required; can be disposed in anyway
-|
+| style="text-align:center;"| Decomposes, releasing combustion gasses, carbon oxides, water vapors
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Safe, low toxicity; occurs naturally in fruits in large concentrations
 |-
-| [[Manganese heptoxide]]
+| style="text-align:center;"| [[Tartrazine]]
-|
+| style="text-align:center;"| Strong dilution in lots of water an poured down the drain; Oxidation with Fenton's reagent, chromic acid
-|
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
-|
+| style="text-align:center;"| Strong dilution
-|
+| style="text-align:center;"| Strong dilution
-|
+| style="text-align:center;"| Not suspected to be bioaccumulative
 |-
-| [[Methane]]
+| style="text-align:center;"| [[TATB]]
-|
+| style="text-align:center;"| Incineration in a kiln; Oxidation with Fenton's reagent
-|
+| style="text-align:center;"| Burns and decomposes to release combustion gases and soot
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to the environment, though limited data is available
 |-
-| [[Methanol]]
+| style="text-align:center;"| [[Terbium(III) oxide]]
-|
+| style="text-align:center;"| Unnecessary, simply dump in trash
-|
+| style="text-align:center;"| Releases absorbed water or carbon dioxide
-|
+| style="text-align:center;"| Unnecessary
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Effects unknown, may stimulate plant growth
 |-
-| [[Methyl ethyl ketone]]
+| style="text-align:center;"| [[Terbium acetate]]
-|
+| style="text-align:center;"| No required, simply dump in trash or recycle
-|
+| style="text-align:center;"| Breaks down at high temperatures to release carbon oxides
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Effects unknown
 |-
-| [[Methyl formate]]
+| style="text-align:center;"| [[Terbium sulfate]]
-|
+| style="text-align:center;"| No required, simply dump in trash
-|
+| style="text-align:center;"| Breaks down at high temperatures to release sulfur oxides
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Effects unknown
 |-
-| [[Methyl salicylate]]
+| style="text-align:center;"| [[tert-Amyl alcohol|''tert''-Amyl alcohol]]
-|
+| style="text-align:center;"| Incineration, oxidation with Fenton's reagent, strongly diluted and poured down the drain
-|
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Poses moderate toxicity to wildlife, water bodies
 |-
-| [[Methyl tert-butyl ether]]
+| style="text-align:center;"| [[tert-Butanol|''tert''-Butanol]]
-|
+| style="text-align:center;"| Incineration, oxidation with Fenton's reagent, strongly diluted and poured down the drain
-|
+| style="text-align:center;"| Will burn to release carbon dioxide and water vapors
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Poses moderate toxicity to wildlife, water bodies
 |-
-| [[Naphthalene]]
+| style="text-align:center;"| [[tert-Butyl chloride|''tert''-Butyl chloride]]
-|
+| style="text-align:center;"| Incineration, oxidation with Fenton's reagent; hydrolysis, followed by dilution, then poured down the drain
-|
+| style="text-align:center;"| Will burn to release carbon dioxide, water vapors and HCl fumes
-|
+| style="text-align:center;"| Dilute to hydrolyze first
-|
+| style="text-align:center;"| Dilute to hydrolyze first
-|
+| style="text-align:center;"| Poses moderate toxicity to wildlife, water bodies
 |-
-| [[Neodymium oxalate]]
+| style="text-align:center;"| [[Tetraamine copper(II) complex]]
-|
+| style="text-align:center;"| Pyrolysis; any acid
-|
+| style="text-align:center;"| Gives off water vapors and ammonia, leaving copper oxide behind
-|
+| style="text-align:center;"| Yes, unless there's copper or brass plumbing
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Copper ions pose toxicity to most organisms
 |-
-| [[Nicotine]]
+| style="text-align:center;"| [[Tetraaminecopper(II) persulphate]]
-|
+| style="text-align:center;"| Controlled detonation; Any acid
-|
+| style="text-align:center;"| Detonation, releasing ammonia, sulfur dioxide copper oxide
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Copper ions are toxic to small animals
 |-
-| [[Nitric acid]]
+| style="text-align:center;"| [[Tetrabutyltin]]
-|
+| style="text-align:center;"| Addition of diluted mineral acid; Addition of aq. NaOH to hydrolyze butyl derivates to butanol; Separation of compounds, incineration of butanol; Tin waste can be dumped in trash or taken to disposal centers
-|
+| style="text-align:center;"| Decomposes above 265 °C, may ignite in open air above 107 °C in the presence of a flame
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Tin compounds are known to be harmful
 |-
-| [[Nitrogen dioxide]]
+| style="text-align:center;"| [[Tetrachlorocupric acid]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate
-|
+| style="text-align:center;"| Gives off hydrochloric acid fumes, leaving copper oxide behind
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic for wildlife
 |-
-| [[Nitrogen trichloride]]
+| style="text-align:center;"| [[Tetrahydrofuran]]
-|
+| style="text-align:center;"| Incineration (no peroxides); Adding excess ferrous sulfate, sodium bisulfite or metabisulfite to neutralize the peroxides, followed by incineration; If the bottle has peroxides on the cap, do not open it, instead safely detonate it in a remote or special area
-|
+| style="text-align:center;"| Burns, giving off combustion gasses
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic and dangerous for wildlife
 |-
-| [[Nitrogen triiodide]]
+| style="text-align:center;"| [[Tetralin]]
-|
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
-|
+| style="text-align:center;"| Ignites at high temperatures and generates carbon oxides, water vapors, carbon monoxide, soot, VOCs
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful to wildlife and water bodies
 |-
-| [[Nitroglycerin]]
+| style="text-align:center;"| [[Tetranitroglycoluril]]
-|
+| style="text-align:center;"| Incineration, done outside
-|
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Little information about its environmental impact
 |-
-| [[Nitromethane]]
+| style="text-align:center;"| [[Tetryl]]
-|
+| style="text-align:center;"| Incineration, done outside; Controlled oxidation with Fenton's reagent
-|
+| style="text-align:center;"| Ignites, gives off carbon oxides, nitrogen oxides, water vapors, soot
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Displays moderate toxicity to aquatic life
 |-
-| [[Nitrous oxide]]
+| style="text-align:center;"| [[Thioglycolic acid]]
-|
+| style="text-align:center;"| Hydrogen peroxide, bleach; poured down the drain
-|
+| style="text-align:center;"| Decomposes to release sulfur dioxide and carbon dioxide
-|
+| style="text-align:center;"| Neutralize it with bleach or hydrogen peroxide first
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Harmful to organisms due to its ability to weaken S-S bonds in various tissues
 |-
-| [[Octyl acetate]]
+| style="text-align:center;"| [[Thionyl chloride]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate;
-|
+| style="text-align:center;"| Not useful; Decomposes to release sulfur dioxide and chlorine
-|
+| style="text-align:center;"| NO! Neutralize it first!
-|
+| style="text-align:center;"| NO! Neutralize it first!
-|
+| style="text-align:center;"| Corrosive and deadly to all wildlife; Lowers soil pH; Corrosive to rocks, soil
 |-
-| [[Oxalic acid]]
+| style="text-align:center;"| [[Thiophene]]
-|
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid
-|
+| style="text-align:center;"| Generates carbon oxides, water vapor, sulfur oxides, soot, sulfur
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful to wildlife
 |-
-| [[Ozone]]
+| style="text-align:center;"| [[Thiourea]]
-|
+| style="text-align:center;"| Oxidation with an oxidizing solution, such as Fenton's reagent, piranha solution or chromic acid
-|
+| style="text-align:center;"| Generates carbon oxides, water vapor, sulfur oxides, soot and nitrogen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful to wildlife
 |-
-| [[Perchloric acid]]
+| style="text-align:center;"| [[Thiourea dioxide]]
-|
+| style="text-align:center;"| Pyrolysis, preferably in an oxidizing atmosphere; strong dilution and poured down the drain
-|
+| style="text-align:center;"| Generates carbon oxides, sulfur oxides, water vapors and nitrogen
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Harmful to wildlife
 |-
-| [[Permanganic acid]]
+| style="text-align:center;"| [[Threitol]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Yields carbon oxides, water vapors
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Low toxicity to environment
 |-
-| [[Peroxymonosulfuric acid]]
+| style="text-align:center;"| [[Thymol blue]]
-|
+| style="text-align:center;"| Destroyed with an oxidizing mixture; Diluted and poured down the drain
-|
+| style="text-align:center;"| Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| May be harmful to microorganisms, fauna and water bodies
 |-
-| [[Petroleum ether]]
+| style="text-align:center;"| [[Tin(II) chloride]]
-|
+| style="text-align:center;"| Excess base, carbonate, bicarbonate; Should be taken to waste disposal centers
-|
+| style="text-align:center;"| Gives off hydrochloric acid fumes in the presence of moisture
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic to wildlife
 |-
-| [[Phenol]]
+| style="text-align:center;"| [[Tin(IV) chloride]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate; Should be taken to waste disposal centers
-|
+| style="text-align:center;"| Gives off hydrochloric acid fumes in moist air
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and toxic to wildlife
 |-
-| [[Phosphoric acid]]
+| style="text-align:center;"| [[Titan yellow]]
-|
+| style="text-align:center;"| Destroyed with an oxidizing mixture; Diluted and poured down the drain
-|
+| style="text-align:center;"| Decomposes giving off carbon oxides, sulfur oxides, nitrogen, water, soot, VOCs
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| May be harmful to microorganisms, fauna and water bodies
 |-
-| [[Potassium bromide]]
+| style="text-align:center;"| [[Titanium dioxide]]
-|
+| style="text-align:center;"| Not required; Can be dumped in trash
-|
+| style="text-align:center;"| Not useful; Fuses in the presence of alkaline and alkaline-earth oxides and hydroxides to titanates
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| May lead to staining water bodies and soil in a white color
 |-
-| [[Potassium carbonate]]
+| style="text-align:center;"| [[Titanium nitrate]]
-|
+| style="text-align:center;"| Dissolving it in water, followed by precipitation of titanium dioxide by adding an alkali
-|
+| style="text-align:center;"| Decomposes releasing nitrogen dioxide
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Potentially harmful; Nitrates may serve as nourishment for plants; Titanium compounds show moderate toxicity
 |-
-| [[Potassium chlorate]]
+| style="text-align:center;"| [[Titanium nitride]]
-|
+| style="text-align:center;"| Not required; Can be dumped in trash
-|
+| style="text-align:center;"| Not useful; May react with alkaline and alkaline-earth oxides and hydroxides to titanates
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| May lead to staining, irritant, abrasive
 |-
-| [[Potassium chloride]]
+| style="text-align:center;"| [[Titanium(IV) chloride]]
-|
+| style="text-align:center;"| CAREFUL addition to a diluted aqueous alkaline solution
-|
+| style="text-align:center;"| Not useful; boils and hydrolyzes
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and harmful to all organisms
 |-
-| [[Potassium ferrate]]
+| style="text-align:center;"| [[Toluene]]
-|
+| style="text-align:center;"| Oxidation with Fenton's reagent; Incineration, best done with an afterburner
-|
+| style="text-align:center;"| Flammable, burns in air to release carbon oxides, water vapors, soot, VOCs
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife and very dangerous to aquatic life, as well as soil
 |-
-| [[Potassium hydroxide]]
+| style="text-align:center;"| [[Triaminoguanidine]]
-|
+| style="text-align:center;"| Oxidation with Fenton's reagent or piranha solution
-|
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Considered to be harmful, but little is known about its toxicity
 |-
-| [[Potassium iodide]]
+| style="text-align:center;"| [[Trichloroacetic acid]]
-|
+| style="text-align:center;"| Neutralization and dehalogenation with excess sodium hydroxide; Reduction with metallic powders to acetic acid
-|
+| style="text-align:center;"| Evaporates and burns at high temperatures, releasing toxic fumes
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic and corrosive to most wildlife
 |-
-| [[Potassium manganate]]
+| style="text-align:center;"| [[Trichloroethylene]]
-|
+| style="text-align:center;"| Sodium hydroxide; Oxidation with Fenton's reagent
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
 |-
-| [[Potassium metabisulfite]]
+| style="text-align:center;"| [[Trichloroisocyanuric acid]]
-|
+| style="text-align:center;"| Sodium thiosulfate, sulfite, bisulfite, metabisulfite
-|
+| style="text-align:center;"| Breaks down to release chlorine
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
 |-
-| [[Potassium nitrate]]
+| style="text-align:center;"| [[Triethanolamine]]
-|
+| style="text-align:center;"| Mixed with a more flammable solvent and incinerated
-|
+| style="text-align:center;"| Yields carbon oxides, water vapor at high temperatures
-|
+| style="text-align:center;"| Strongly diluted
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Toxic to organisms, dangerous to aquatic and soil life
 |-
-| [[Potassium permanganate]]
+| style="text-align:center;"| [[Triethyl borate]]
-|
+| style="text-align:center;"| Incineration; Hydrolysis with water
-|
+| style="text-align:center;"| Burns in air
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Effects unknown to environment
 |-
-| [[Propane]]
+| style="text-align:center;"| [[Triethyl citrate]]
-|
+| style="text-align:center;"| Diluted with another solvent, followed by incineration
-|
+| style="text-align:center;"| Burns in air, releasing carbon dioxide, water vapors, soot and acrid fumes
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Low toxicity to organisms, may harm water bodies
 |-
-| [[Propylene glycol]]
+| style="text-align:center;"| [[Triethylamine]]
-|
+| style="text-align:center;"| Diluted with another solvent, followed by incineration; Neutralization with an acid and destroyed via oxidation
-|
+| style="text-align:center;"| Burns in air
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to most lifeforms, dangerous to water bodies
 |-
-| [[Prussian blue]]
+| style="text-align:center;"| [[Trifluoroacetic acid]]
-|
+| style="text-align:center;"| Bicarbonates, carbonates, bases, oxides
-|
+| style="text-align:center;"| Boils off
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Corrosive and poisonous to organisms; does not readily degrade in environment, but does not bioaccumulate
 |-
-| [[Pyranine]]
+| style="text-align:center;"| [[Trimethyl borate]]
-|
+| style="text-align:center;"| Incineration; Hydrolysis with water
-|
+| style="text-align:center;"| Burns in air
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Effects unknown to environment
 |-
-| [[Pyridine]]
+| style="text-align:center;"| [[Trimethyl phosphate]]
-|
+| style="text-align:center;"| Hydrolysis with sodium hydroxide
-|
+| style="text-align:center;"| Decomposes and may ignite at high temperatures, releasing carbon and phopshorus oxides
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Effects unknown to environment
 |-
-| [[Rosocyanine]]
+| style="text-align:center;"| [[Trimethylamine]]
-|
+| style="text-align:center;"| Incineration
-|
+| style="text-align:center;"| Burns in air, giving off carbon dioxide, nitrogen and water vapors
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Amines can be source of nitrogen for plants, but may be harmful to fauna and water bodies
 |-
-| [[Schweizer's reagent]]
+| style="text-align:center;"| [[Trimethylphosphine]]
-|
+| style="text-align:center;"| Incineration
-|
+| style="text-align:center;"| Burns in air releasing carbon and phosphorus oxides
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Extremely toxic to organisms; Other environmental effects unknown
 |-
-| [[Silicon dioxide]]
+| style="text-align:center;"| [[Trinitroaniline]]
-|
+| style="text-align:center;"| Strong dilution, followed by addition of dil. NaOH; Oxidation with Fenton's reagent
-|
+| style="text-align:center;"| Burns and decomposes to release combustion gasses and soot, may explode
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely toxic to the environment, especially for animals
 |-
-| [[Silver nitrate]]
+| style="text-align:center;"| [[Trinitrophloroglucinol]]
-|
+| style="text-align:center;"| Careful and controlled destruction using an oxidizing solution
-|
+| style="text-align:center;"| May explode
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely toxic to all organisms
 |-
-| [[Sodium benzoate]]
+| style="text-align:center;"| [[Trinitrotoluene]]
-|
+| style="text-align:center;"| Oxidation with Fenton's reagent
-|
+| style="text-align:center;"| Burns and decomposes to release combustion gasses and soot
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Extremely toxic to the environment, especially for animals
 |-
-| [[Sodium bicarbonate]]
+| style="text-align:center;"| [[Triphenylmethanol]]
-|
+| style="text-align:center;"| Dissolved in a more flammable solvent and incinerated
-|
+| style="text-align:center;"| Flammable, gives off carbon dioxide, PAHs, soot and water vapors
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Potentially harmful for wildlife and aquatic life in large concentrations
 |-
-| [[Sodium bisulfate]]
+| style="text-align:center;"| [[Triphenylphosphine]]
-|
+| style="text-align:center;"| Incineration
-|
+| style="text-align:center;"| Burns in air releasing carbon and phosphorus oxides
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Effects unknown to environment
 |-
-| [[Sodium carbonate]]
+| style="text-align:center;"| [[Tris(ethylenediamine)nickel perchlorate]]
-|
+| style="text-align:center;"| Safe detonation; Residual perchlorates can be destroyed by adding metallic iron under UV light, in the absence of air.
-|
+| style="text-align:center;"| Detonates
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Nickel and perchlorates are toxic to environment
 |-
-| [[Sodium chloride]]
+| style="text-align:center;"| [[Tungsten carbide]]
-|
+| style="text-align:center;"| Not required; can be dumped in trash or taken to waste disposal centers
-|
+| style="text-align:center;"| Not useful (refractory)
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Yes (if pure); No (if it contains cobalt)
-|
+| style="text-align:center;"| Toxic to the environment if it contains cobalt
 |-
-| [[Sodium hydroxide]]
+| style="text-align:center;"| [[Urea]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Generates carbon oxides, nitrogen fumes; May corrode metal container, if done in one
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| OH YES
-|
+| style="text-align:center;"| May cause uncontrolled algae growth in water bodies
 |-
-| [[Sodium hypochlorite]]
+| style="text-align:center;"| [[Urea nitrate]]
-|
+| style="text-align:center;"| Cooled basic solution (NaOH, KOH, Ca(OH)<sub>2</sub>)
-|
+| style="text-align:center;"| Decomposes when burned; May explode if heated at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| OH YES!
-|
+| style="text-align:center;"| Safe, good fertilizer; May cause uncontrolled algae growth in water bodies
 |-
-| [[Sodium metabisulfite]]
+| style="text-align:center;"| [[Urea peroxide]]
-|
+| style="text-align:center;"| Water, iron(III) oxide, manganese dioxide
-|
+| style="text-align:center;"| Decomposes when heated to high temperatures, releasing water vapor
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes, though not recommended in large quantities
-|
+| style="text-align:center;"| Irritant and corrosive to large organisms, kills small organisms
 |-
-| [[Sodium nitrate]]
+| style="text-align:center;"| [[Vanadium pentoxide]]
-|
+| style="text-align:center;"| Not required; should be taken to disposal facilities
-|
+| style="text-align:center;"| Not useful; Turns into oxides of lower states at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Vanadium ions pose toxicity for wildlife
 |-
-| [[Sodium perchlorate]]
+| style="text-align:center;"| [[Violuric acid]]
-|
+| style="text-align:center;"| Not required; and oxidizing mixture may be used to oxidize it completely if desired
-|
+| style="text-align:center;"| Decomposes above 250 °C to release carbon dioxide, water vapors and soot
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| Dilute first
-|
+| style="text-align:center;"| There is little data available for its environmental effects, doesn't appear to be toxic
 |-
-| [[Sodium silicate]]
+| style="text-align:center;"| [[Warfarin]]
-|
+| style="text-align:center;"| Strong dilution in lots of water an poured down the drain; Oxidation with Fenton's reagent, chromic acid
-|
+| style="text-align:center;"| Generates carbon oxides, water vapor, soot and nitrogen vapors
-|
+| style="text-align:center;"| Strong dilution
-|
+| style="text-align:center;"| Strong dilution
-|
+| style="text-align:center;"| Lethal to small animals and toxic to larger ones in small amounts; Not suspected to be bioaccumulative
 |-
-| [[Sodium sulfate]]
+| style="text-align:center;"| [[Water]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Leads to steam
-|
+| style="text-align:center;"| YES
-|
+| style="text-align:center;"| YES
-|
+| style="text-align:center;"| It's...water
 |-
-| [[Strontium carbonate]]
+| style="text-align:center;"| [[Whistle mix]]
-|
+| style="text-align:center;"| Dissolution in water; Reduction with sodium thiosulfate, sulfite, metabisulfite
-|
+| style="text-align:center;"| Detonates
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Potassium chlorate is a potent herbicide
 |-
-| [[Strontium oxide]]
+| style="text-align:center;"| [[Wood]]
-|
+| style="text-align:center;"| Incineration; Dumping in trash
-|
+| style="text-align:center;"| Will burn if ignited, releasing carbon oxides, water vapors and soot
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump uncomposted
-|
+| style="text-align:center;"| Uncomposted wood is harmful for environment, especially sawdust
 |-
-| [[Sucrose]]
+| style="text-align:center;"| [[Wood's metal]]
-|
+| style="text-align:center;"| Recycling; Wastes should be taken to hazardous metal disposal centers
-|
+| style="text-align:center;"| Melts at 70 °C and gives off harmful cadmium fumes at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| While bismuth and tin don't present great hazard to environment, lead and cadmium do
 |-
-| [[Sulfur dichloride]]
+| style="text-align:center;"| [[Xanthan gum]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Pyrolysis gives foul smelling compounds
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Safe, biodegradable; nourishment for many organisms
 |-
-| [[Sulfur hexafluoride]]
+| style="text-align:center;"| [[Xanthatin]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Burns at high temperatures, releasing carbon dioxide, water and soot
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Safe, biodegradable
 |-
-| [[Sulfuric acid]]
+| style="text-align:center;"| [[Xylene]]
-|
+| style="text-align:center;"| Oxidation with Fenton's reagent; Incineration, best with an afterburner
-|
+| style="text-align:center;"| Burns in air, to release combustion gasses, soot and VOCs
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife and hazardous to water bodies
 |-
-| [[Terbium(III) oxide]]
+| style="text-align:center;"| [[Xylitol]]
-| Unnecessary, simply dump in trash
+| style="text-align:center;"| Not required
-| Releases absorbed water or carbon dioxide
+| style="text-align:center;"| Melts when heated; not useful
-| Unnecessary
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-| Effects unknown, may stimulate plant growth
+| style="text-align:center;"| Cannot be digested by most lifeforms, otherwise little to no toxicity to most organisms; It is however known to be fatal to dogs and some birds
 |-
-| [[Tetraamine copper(II) complex]]
+| style="text-align:center;"| [[Xylitol pentanitrate]]
-|
+| style="text-align:center;"| Cooled aqueous solution of excess sodium hydroxide
-|
+| style="text-align:center;"| Detonates at temperatures > 160 °C
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| In small amounts
-|
+| style="text-align:center;"| Dangerous to animals due to its vasodilator effects; harmless to plants, nitrogen source for plant life
 |-
-| [[Tetraaminecopper(II) persulphate]]
+| style="text-align:center;"| [[Ytterbium(III) oxide]]
-|
+| style="text-align:center;"| Unnecessary, simply dump in trash; recycle
-|
+| style="text-align:center;"| Releases absorbed water or carbon dioxide
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Effects unknown, may be toxic
 |-
-| [[Tetrachlorocupric acid]]
+| style="text-align:center;"| [[Yttrium(III) oxide]]
-|
+| style="text-align:center;"| Unnecessary, simply dump in trash; recycle
-|
+| style="text-align:center;"| Releases absorbed water or carbon dioxide
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Effects unknown, may be toxic
 |-
-| [[Tetrahydrofuran]]
+| style="text-align:center;"| [[Zamak]]
-|
+| style="text-align:center;"| Recycling; Traces of zamak waste can be dissolved with nitric acid, followed by neutralization of leftover acid, recovering copper and zinc via electrowinning
-|
+| style="text-align:center;"| Not useful; melts above 380 °C and may fume
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Low quality zamak may contain lead or cadmium which are harmful to the environment
 |-
-| [[Tin(IV) chloride]]
+| style="text-align:center;"| [[Zeolite]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Calcinates at high temperatures
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Unless contaminated with hazardous compounds, it poses little danger to environment
 |-
-| [[Toluene]]
+| style="text-align:center;"| [[Zinc acetate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Breaks down to zinc oxide, carbon oxides, water, acetone, acetic anhydride (?) at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Unless contaminated, good source of zinc for plants, though a bit too acidic; may lower soil pH
 |-
-| [[Trimethyl borate]]
+| style="text-align:center;"| [[Zinc carbonate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Breaks down to zinc oxide and carbon oxide at high temperatures
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Unless contaminated, good source of zinc for plants, though a bit too alkaline
 |-
-| [[Tris(ethylenediamine)nickel perchlorate]]
+| style="text-align:center;"| [[Zinc chloride]]
-|
+| style="text-align:center;"| Any base, carbonate, bicarbonate
-|
+| style="text-align:center;"| Gives off hydrochloric acid fumes if moist
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Neutralize first
-|
+| style="text-align:center;"| Chlorides are dangerous for chloride-sensitive plants in large quantities
 |-
-| [[Urea]]
+| style="text-align:center;"| [[Zinc chromate]]
-|
+| style="text-align:center;"| Reducing with a reducing agent, such as sodium metabisulfite, sulfite, bisulfite, ascorbic acid
-|
+| style="text-align:center;"| Not very useful
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Cr(VI) is toxic for wildlife
 |-
-| [[Vanadium pentoxide]]
+| style="text-align:center;"| [[Zinc nitrate]]
-|
+| style="text-align:center;"| Sodium, potassium or ammonium carbonate/bicarbonate to precipitate zinc carbonate which is inert; recovery of alkali nitrates, dilution of zinc carbonate and poured down the drain
-|
+| style="text-align:center;"| Decomposes to zinc oxide, releasing nitrogen dioxide and oxigen
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| Dilute it strongly
-|
+| style="text-align:center;"| May pose a threat to aquatic life in large quantities; may cause unwanted algal bloom; source of zinc and nitrogen to plants
 |-
-| [[Water]]
+| style="text-align:center;"| [[Zinc oxide]]
-|
+| style="text-align:center;"| Not required; Weak acids can be used to dissolve zinc oxide stains to soluble zinc compounds
-|
+| style="text-align:center;"| Turns the oxide yellow at high temperatures; process is reversible
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Yes, but not recommended
-|
+| style="text-align:center;"| May pose a threat to aquatic life in large quantities
 |-
-| [[Xylene]]
+| style="text-align:center;"| [[Zinc perchlorate]]
-|
+| style="text-align:center;"| Precipitation with a soluble hydroxide; Reduction of perchlorate to chloride
-|
+| style="text-align:center;"| Gives off chlorine oxide fumes, leaving behind zinc oxide slag; may decompose violently if organic contaminant present
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| DO NOT DUMP!
-|
+| style="text-align:center;"| Perchlorates are toxic to wildlife
 |-
-| [[Xylitol]]
+| style="text-align:center;"| [[Zinc peroxide]]
-|
+| style="text-align:center;"| Hydrolysis with water; Any acid
-|
+| style="text-align:center;"| May explode at over 212 °C
-|
+| style="text-align:center;"| Best to neutralize it first
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Peroxides are deadly to small animals
 |-
-| [[Zinc carbonate]]
+| style="text-align:center;"| [[Zinc phosphate]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| No
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Source of zinc and phosphorus for wildlife
 |-
-| [[Zinc chromate]]
+| style="text-align:center;"| [[Zinc sulfate]]
-|
+| style="text-align:center;"| Not always required; Zinc metal can be recovered through electrowinning and the diluted sulfuric acid neutralized with a base
-|
+| style="text-align:center;"| Not useful
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Yes
-|
+| style="text-align:center;"| Unless contaminated, is a good source of zinc for plants
 |-
-| [[Zinc oxide]]
+| style="text-align:center;"| [[Zinc sulfide]]
-|
+| style="text-align:center;"| Hydrogen peroxide
-|
+| style="text-align:center;"| May give off hydrogen sulfide in the presence of water at high temperatures
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| DO NOT DUMP
-|
+| style="text-align:center;"| Toxic to wildlife
 |-
-| [[Zinc peroxide]]
+| style="text-align:center;"| [[Zingiberene]]
-|
+| style="text-align:center;"| Not required
-|
+| style="text-align:center;"| Burns at high temperatures, releasing carbon dioxide, water and soot
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Yes, but dilute first
-|
+| style="text-align:center;"| Safe, biodegradable
 |-
-| [[Zinc sulfate]]
+| style="text-align:center;"| [[Zirconium nitrate]]
-|
+| style="text-align:center;"| Dissolving it in water, followed by precipitation of zirconium dioxide by adding an alkali
-|
+| style="text-align:center;"| Decomposes releasing nitrogen dioxide
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Not recommended
-|
+| style="text-align:center;"| Potentially harmful; Nitrates may serve as nourishment for plants; Zirconium displays moderate toxicity
 |-
-| [[Zinc sulfide]]
+| style="text-align:center;"| [[Zirconyl chloride]]
-|
+| style="text-align:center;"| Precipitate to zirconium oxide; recycle
-|
+| style="text-align:center;"| Decomposes releasing HCl and water vapors
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Do not dump
-|
+| style="text-align:center;"| Unknown effects
 |}
@@ Line 1,461: / Line 6,029: @@
 *[http://www.sciencemadness.org/talk/viewthread.php?tid=22411 Safe disposal/handling of lead in a domestic setting]
-[[Category: Practices]]
+[[Category:Lab safety]]
+[[Category:How-to]]
+[[Category:Practices]]
+[[Category:Data tables]]