chief
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sodium-dichlor-iso-cyan-urate | What uses ?
Recently I picked up, from the pool-supply-shelf, some chlorine-disinfectant ... ; the label states:
==> 1000 mg/g (which should mean 99.99 %, right ?)
==> warnings not to mix it with any other stuff ...
Especially it would not to be mixed with any hypochlorite, since it then is said to give NCl3 ... 
==> As well with moisture it is said that it can slowly give NCl3 ...
==> Also there is a warning not to mix it with ammonia-compounds ... (same reason ?)
==> ... not to mix it with bases or acids ...
==> ... not to mix it with any other oxidizers ... (chlorine-oxides ? Or what ??)
=================
So this stuff seems to be quite reactive ... ... ; I got it for disinfection ... ...
What can it be good for ? How does one perform reactions with it ? What to avoid ?
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Formatik
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SDCl incompatibles
Well, yes, don't mix it, especially in a concentrated state with the hypochlorites, since that forms NCl3. There was a thread on just that: http://www.sciencemadness.org/talk/viewthread.php?tid=11139
I would store hypochlorites away from TCCA and sodium dichloroisocyanurate (SDCl). Don't mix SDCl with ammonia salts for the same reason
(chloramines). Urea, and some other nitrogenous compounds react similar. Wiley's Incompatibilities claims azidotetrazole forms from NH4NO3 and SDCl,
but I've mixed these in solution and found them to decompose just forming chloramines.
With some water, some Cl2 is said to be released, and with even less water some NCl3. This is gradual. In that case, acidic water solution can favor
NCl3 formation. Acids are known to liberate Cl2. Not sure how you could get chlorine oxides out of it. It is said to decompose in alkaline conditions
releasing CO2, N2, and chloramines.
Combustibles like alcohols, polyols, ketones, ethers, sulfoxides, etc. could react with it. DMSO ignites on contact releasing some nasty gases (see in
the hypergolics thread).
Heating it probably forms some NCl3, Cl2, etc. like when trichloroisocyanuric acid is heated.
For the rest, like toxicity see the MSDS.
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mr.crow
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Congrats chief, you made the 20000th post in this sub forum
Double, double toil and trouble; Fire burn, and caldron bubble
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The WiZard is In
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Quote: Originally posted by chief  | Recently I picked up, from the pool-supply-shelf, some chlorine-disinfectant ... ; the label states:
==> 1000 mg/g (which should mean 99.99 %, right ?)
==> warnings not to mix it with any other stuff ... |
You could blow up your/a warehouse....
Negligence' led to Grande Paroisse blast.
Chemical Week June 19, 2002
Young, Ian
The fatal explosion at the Toulouse, France site of Grande Paroisse
last September was caused by negligence, say the initial findings
of a report that forms part of a judicial inquiry into the accident.
The blast most likely resulted from a reaction between
ammonium nitrate (AN) and sodium dichloroisocyanurate
(DCCNa) that were being stored in the same warehouse, creating
nitrogen trichloride, which spontaneously combusted in the humid
conditions inside the warehouse, the report says. Three of the
experts preparing the report, and two of the judges heading the
inquiry, presented the report's "initial interim conclusions" to
community representatives at a hearing on June 6. … [Remainder
Pay Per View.]
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The WiZard is In
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| Quote: Originally posted by chief | Recently I picked up, from the pool-supply-shelf, some chlorine-disinfectant ... ;
What can it be good for ? How does one perform reactions with it ? What to avoid ? |
If you people knew how to use Google I wouldn't have
anything to do!
GROUPE SNPE : Lecture Made at the Federation of European Explosives Manufacturers' (F.E.E.M.) 28th Annual General Meeting; Copenhagen, 21ST April,
2004
PARIS, April 21 /PRNewswire/ --
- Ammonium Nitrate detonation induced by contact with Sodium Dichloroisocyanurate
The following is a synopsis of the Lecture made at the F.E.E.M.s' 28th annual general meeting in Copenhagen, today , 21ST April 2004, by GROUPE SNPE:
The explosion at the Toulouse AZF (Total Group) Plant on September 21st, 2001, was caused by the partial or total detonation of 300 tons of Ammonium
Nitrate. This detonation had been initiated by an as yet unidentified cause. It may have been provoked by a chemical reaction between Ammonium Nitrate
and Sodium Dichloroisocyanurate. This is one of the hypothesis of the judicial inquiry. Furthermore, some incidents about unexpected reactions between
Ammonium Nitrate and chlorinated components are reported in literature. For plant safety assessment, it has been decided to conduct a study to
determine the conditions that could lead to Ammonium Nitrate detonation, according to such a chemical reaction process.
The first aim of this study was to prove the formation of Nitrogen Trichloride following solid-solid reaction between Ammonium Nitrate and Sodium
Dichloroisocyanurate particles. Using pure and dry materials, this has been demonstrated by UV/VIS spectrometry. Nitrogen trichloride is an unstable
and dangerous substance; its most frequent decomposition mode is detonation; it is a yellow liquid at room temperature. Its thermodynamical properties
have been determined using chemical equilibrium computer codes. It was then possible for us to assess Ammonium Nitrate detonation ability through
shock-to-detonation transition (SDT) and deflagration-to-detonation transition (DDT) initiated by Nitrogen Trichloride detonation.
For the second part of the study, fifty-six experimental tests have been performed at a scale up to thirty kilograms. Through contact with Sodium
Dichloroisocyanurate, full detonations of Ammonium Nitrate have been obtained without any other stimuli. These detonations have been proved by blast
overpressure measurements and mechanical damages in surroundings. Favorable conditions are moderate humidity of Ammonium Nitrate (about 1.5%),
sufficient contact surface between particles, retaining of decomposition gases, and lack of light. Thus, it is important to consider that chlorinated
components can cause detonation of Ammonium Nitrate stockpile. It is a relevant scenario for serious accidents.
Distributed by PR Newswire on behalf of SNPE SA
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The WiZard is In
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| Quote: Originally posted by chief | Recently I picked up, from the pool-supply-shelf, some chlorine-disinfectant ...
What can it be good for ? How does one perform reactions with it
? What to avoid ? |
---------------
Materials for explosives in the mix
By Dan Crowley
Created 03/11/2008 - 09:34
SOUTH HADLEY - Among the chemicals seized from a South
Hadley home last month were dangerous substances that could be
used as raw materials for explosives. That may explain why
federal agents raided the Dartmouth Street home of 17-year-old
Jack Robison and turned a residential neighborhood upside down
for three days.
Other toxic and industrial-grade chemicals, from solvents and
herbicides to compounds containing lead and mercury, were also
covered in the teenager's basement laboratory by emergency
responders who tested the materials at the scene, according to a
field sample log obtained by the Gazette.
State officials, including the Northwestern district attorney's office,
have declined to discuss the incident in detail, or release a list of
the types and amounts of chemicals authorities removed from 23
Dartmouth St. on the weekend of Feb. 16-17. The chemicals were
transported in nearly a dozen trips to a nearby landfill and
destroyed in a series of explosions that shook the homes of
residents in the area.
"That list is part of an ongoing criminal investigation, and we're
not prepared to release it," said Jennifer Mieth, spokeswoman for
the state Fire Marshal's Office.
Mary Robison, Jack Robison's mother, said in an interview
following the incident at her home that she had been instructed by
federal authorities not to talk about the experiments her amateur
chemist son was working on, or what types of chemicals he was
using. Officials last month said Robison would not be charged by
local police with any criminal offenses.
Other local officials, including South Hadley District 1 Fire Chief Bill
Judd, said this week his team provided only a supporting role
during the seizure, which involved the Massachusetts Fire and
Explosion Investigation Unit, the U.S. Bureau of Alcohol, Tobacco
and Firearms and a state hazardous materials response team.
As of this week, Judd said he was not aware of the many
chemicals confiscated from 23 Dartmouth St., though it was his
impression they were dangerous.
"He was experimenting, no doubt about it," Judd said.
Judd also said he, among others, had viewed video clips on the
Internet site YouTube that showed Robison detonating minor
explosions near high-tension wires in Amherst, which may have
been another cause for alarm by federal authorities.
The field sample log reviewed by the Gazette details an array of
chemicals that experts say could have a broad range of
applications, including agriculture, pottery, explosives and
pyrotechnics. The field sample log is a working document and is
not considered a final report on the nature of the materials seized.
Some of the compounds listed are as innocuous as car or floor
wax, according to chemicals noted in the field test log. However
most, like Gallium III Nitrate and Lanthanum III nitrate
hexahydrate, are not commonly found in a home, according to
several area chemists interviewed.
"Usually they are found in laboratories and industrial settings,"
said Prof. Dula Amarasiriwardena, a chemist at Hampshire
College.
A student at Holyoke Community College, Robison purchased
chemicals on the Internet, according to federal authorities, who
later told the South Hadley Police and Fire Departments that they
would be investigating suspicious Web purchases at the boy's
home.
Among the names of substances listed that caught at least one
chemist's attention is PETN, which is an acronym for
pentaerythrite tetranitrate, one of the most powerful high
explosives.
Prof. David Bickar, a chemist at Smith College, said PETN is a
compound used in some types of smokeless gunpowder and in
"Primacord," an explosive fuse used in blasting.
"That seems to be a likely item to raise an alarm," said Bickar,
who has a background in pyrotechnics. "PETN is a powerful
explosive; it requires a hard shock to set off, striking it with a
carpenter's hammer, for example, but given that, it will explode.
Given enough PETN, one could make a big explosion."
Ammonium nitrate, often associated with agricultural uses, is also
a potential explosive, and is listed more than once on the field log.
Among other substances that caught chemists' attention was
Ketamine Hydrochloride, which is a drug sold as a veterinary
sedative or hospital grade anaesthesia. The substance also is used
as a recreational drug that acts as a hallucinogen and has a street
name "Special K."
"It's a strange quasi-hallucinogen," said Bickar. "It doesn't have a
broad range of recreational users. I can't think of any other
possible application than as a drug."
The Ketamine Hydrochloride is listed in a sample that also includes
Sodium Dichloroisocyanurate, a disinfectant used in
drinking-water, and Bromacil, which is classified by the U.S.
Environmental Protection Agency as a general use herbicide, along
with a collection of carbon-based solvents.
Authorities said many of the chemicals taken from Robison's home
were mixed, and few samples listed on the field log state "no
match."
Several experts who reviewed the list said it was difficult to
speculate about what experiments Robison may have been
working on in his basement laboratory, given the wide assortment
and combination of chemicals.
"I have no idea what they would be doing with this," said Prof.
Craig T. Martin, a biochemist at the University of Massachusetts in
Amherst.
Martin did note that some of the materials, particularly those
containing lead and mercury, are not substances one would want
hanging around the house.
Chemists interviewed said some of the items listed, such as
benzene and ethanol, are flammable; others are toxic if ingested.
Some of the substances are dangerous in other ways, they noted.
Concentrated, or fuming nitric acid, for example, could cause acid
burns if handled improperly.
In an interview after the seizure, which triggered the evacuation
of homes in the neighborhood, John Elder Robison, Jack Robison's
father, said federal ATF agents had told him his son's lab was
impeccable and followed proper storage procedures.
Those familiar with the chemicals say not everything on the list
rises to the level of a home seizure. The beeswax identified can
make a great lip balm. Aspirin, which also appears on the
emergency responders' log, has well-documented medical benefits.
Although several chemists say they wouldn't feel comfortable
having many of the hazardous materials in their homes, they said
most of the chemicals, while potentially dangerous, are not
unreasonable for a young man who wants to practice chemistry to
obtain. "There are some things I think he shouldn't have," said
Bickar, before adding, "I sort of sympathize with a kid who is
interested in chemistry and collecting a chemistry set - which is
entirely possible."
Daily Hampshire Gazette
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chief
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I searched the forum here; not too many useful preparations are discussed with the stuff;
==> gives some chemiluminescence with H2O2
==> and seem's to really give NCl3 when mixed with Ca-hypochloride ...
==> ... also someone uses it for making chlorine, by reacting it with HCl ...
I guess it's too unpredictable for me, so I now keep throwing it into the mud I wanted to sterilize ...,
but: It's not well discussed here ... !
That's why I just migh repeat the question: What good uses may it have ? What other standard-chemicals might be easily acquired with it and some other
things from the hardware-store ?
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azo
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Hi everyone the question about SDCI uses , i have a chemical manufacturing business and i use it in my industrial
chlorinated laundry powder as well as in my dishwash machine powder .it gets used a lot in formulation chemistry.
?Mabee they could make section on this site for it seen as though it is a very large field and some members are saying there is not mutch worthy
content these days
just a thought regards azo
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woelen
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SDCI (also called Na-DCCA) is very similar to the better known TCCA (one chlorine replaced by sodium). It is an oxidizer of similar strength, but its
water-solubility is much better than TCCA's solubility. So, with hypochlorites, ammonia and ammonium salts and with acids its reactions are
comparable.
I once mixed Na-DCCA with Ca(OCl)2 and added a few drops of water to this mix. Well, I can tell you, that this is scary! The mix first turns yellow
and then it suddenly pops. If large quantities are used, then the mix can explode very violently, or so much heat is produced that the material chars.
The same is true for mixing TCCA and Ca(OCl)2.
Just for fun (this is not dangerous): Take a petri dish and pour some 5% household ammonia in this. To this, add a piece of TCCA or Na-DCCA of the
size of a pea. A violent and bubbling reaction occurs and quite some white smoke is produced (this is mainly NH4Cl). There also is a nasty smell,
which is mainly NH2Cl (poisonous!).
If you do the same with 25% ammonia, then the reaction becomes really scary. A loud crackling noise is produced and in many cases all of the solid
material and some ammonia is ejected from the petri dish with great violence.
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densest
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In acid solution both Na-DCCA and TCCA will oxidize Au -> Au+++ (along with many other metals). I don't know if it will affect Pt. It probably
would eat Pd. Ag tends to turn into AgCl sludge depending on pH and dilution.
I've tried conc. HCl & (separately) HNO3. Both work for Au.
It doesn't take very much! I added 30g or so to a 2l flask & etched every piece of metal within 2m of my setup despite an exhaust hood. Stainless
steel gets badly pitted.
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Formatik
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Though it has been used in some syntheses in reaction with several organic nitrogenous compounds without incident. Examples:
4-amino-1,2,4-triazole with SDCI yields a tetrazene, or trichlorinated compound depending on molar ratio (more SDCI gave the chlorinated compound).
2,2',5,5'-tetrachloro-1,1'-azo-1,3,4-triazole has also been made from action of the same with SDCI in water lighlty acidic with AcOH.
Oxidizing the amino of aminotriazolylfurazans with SDCI (also in aq. AcOH) has also formed substituted compounds.
Some quinolinones and SDCI in aq. methanolic NaOH to get benzisoxazoles.
The industrial disaster involving SDCI (or more commonly, SDIC) and AN in Toulouse has drawn some parallels to other accidents, like the Oppau
fertilizer storage facility disaster, which killed 561 and injured over 2000. The difference here is less casualties, and nitrogen trichloride instead
of exploding sticks of dynamite as the trigger.
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azo
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it might be interesting to no that when NDCI is reacted with a number of incompatable compounds nitrogen trichloride is formed
only for the ones that would like to blow .up
azo
[Edited on 2-6-2010 by azo]
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