Difference between revisions of "Methyl ethyl ketone peroxide"
| Line 50: | Line 50: | ||
| Appearance = Colorless liquid | | Appearance = Colorless liquid | ||
| BoilingPt = | | BoilingPt = | ||
| − | | BoilingPtC = | + | | BoilingPtC = 70 |
| BoilingPt_ref = | | BoilingPt_ref = | ||
| − | | BoilingPt_notes = | + | | BoilingPt_notes = (decomposes above 80 °C) |
| Density = 1.170 g/cm<sup>3</sup> (at 20 °C) | | Density = 1.170 g/cm<sup>3</sup> (at 20 °C) | ||
| Formula = C<sub>8</sub>H<sub>18</sub>O<sub>6</sub> | | Formula = C<sub>8</sub>H<sub>18</sub>O<sub>6</sub> | ||
| Line 59: | Line 59: | ||
| MolarMass = 210.23 g/mol | | MolarMass = 210.23 g/mol | ||
| MeltingPt = | | MeltingPt = | ||
| − | | MeltingPtC = | + | | MeltingPtC = -30 |
| MeltingPt_ref = | | MeltingPt_ref = | ||
| − | | MeltingPt_notes = | + | | MeltingPt_notes = <ref>http://cameo.mfa.org/wiki/Methyl_ethyl_ketone_peroxide</ref> |
| Odor = Acetone-like<ref>Gerhartz, W. (exec ed.). Ullmann's Encyclopedia of Industrial Chemistry. 5th ed.Vol A1: Deerfield Beach, FL: VCH Publishers, 1985 to Present., p. VA4 (85) 476</ref>, mint-like<ref>layton, G.D., F.E. Clayton (eds.) Patty's Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D, 2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons Inc., 1993-1994., p. 562</ref> | | Odor = Acetone-like<ref>Gerhartz, W. (exec ed.). Ullmann's Encyclopedia of Industrial Chemistry. 5th ed.Vol A1: Deerfield Beach, FL: VCH Publishers, 1985 to Present., p. VA4 (85) 476</ref>, mint-like<ref>layton, G.D., F.E. Clayton (eds.) Patty's Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D, 2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons Inc., 1993-1994., p. 562</ref> | ||
| pKa = | | pKa = | ||
| Line 91: | Line 91: | ||
| AutoignitionPt = | | AutoignitionPt = | ||
| ExploLimits = | | ExploLimits = | ||
| − | | ExternalMSDS = | + | | ExternalMSDS = [https://www.docdroid.net/lkHFYzX/methyl-ethyl-ketone-peroxide-50-sa.pdf.html Sigma-Aldrich] (≤ 50%) |
| − | | FlashPt = 75 °C | + | | FlashPt = 75 °C (167 °F; 348 K) |
| LD50 = | | LD50 = | ||
| LC50 = | | LC50 = | ||
Revision as of 11:07, 28 June 2017
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This article is a stub. Please help Sciencemadness Wiki by expanding it, adding pictures, and improving existing text.
|
| Names | |
|---|---|
| Preferred IUPAC name
2-Hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane | |
| Systematic IUPAC name
2-[(2-Hydroperoxybutan-2-yl)peroxy]butane-2-peroxol | |
| Other names
2-Butanone peroxide
Ketonox Mepox Thermacure | |
| Identifiers | |
| Jmol-3D images | Image |
| |
| Properties | |
| C8H18O6 | |
| Molar mass | 210.23 g/mol |
| Appearance | Colorless liquid |
| Odor | Acetone-like[1], mint-like[2] |
| Density | 1.170 g/cm3 (at 20 °C) |
| Melting point | −30 °C (−22 °F; 243 K) [3] |
| Boiling point | 70 °C (158 °F; 343 K) (decomposes above 80 °C) |
| Slightly soluble | |
| Solubility | Miscible with acetone, ethanol |
| Vapor pressure | <0.01 mm Hg at 20 °C |
| Hazards | |
| Safety data sheet | Sigma-Aldrich (≤ 50%) |
| Flash point | 75 °C (167 °F; 348 K) |
| Related compounds | |
| Related compounds
|
Acetone peroxide Hexamethylene triperoxide diamine |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Methyl ethyl ketone peroxide or MEKP is colorless liquid chemical compound, used mainly as a catalyst in various plastic materials. However, it is also an explosive material, and due to its use in terrorist bombing, it has gained a bad reputation, mainly because it's easy to manufacture from OTC products and somewhat difficult to properly detect.
Contents
Properties
Chemical
MEKP can be used as a catalyst in various polyester resins.
Physical
MEKP is an oily colorless liquid, with a faint acetone-like smell (some sources say mint), slightly soluble in water, but miscible with various organic solvents.
Explosive
Methyl ethyl ketone peroxide is a primary explosive, sensitive to shock and friction, though less so than TATP, with a detonation velocity of 5200 m/s.
Availability
MEKP is only available commercially in solution as polymer catalyst. Most solutions consist of 55-60% dimethyl phtalate, 30-35 methyl ethyl ketone peroxide and <5% hydrogen peroxide.[4] However, extracting it from the commercial solution may not worth the effort.
Preparation
Methyl ethyl ketone peroxide can be made by reacting methyl ethyl ketone with hydrogen peroxide under controlled conditions.
Projects
- Crosslink polymer catalyst
Handling
Safety
MEKP is a strong irritant and harmful if ingested.
It is also a sensitive explosive.
Storage
Diluted solutions should be stored in closed bottles, away from light.
While more stable than other organic peroxides, concentrated MEKP should not be stored for long periods of time.
Disposal
MEKP can be neutralized with a reducing agent, such as sodium sulfite. If no more peroxides are present in the neutralization product, it can be safely burned or disposed properly.
References
- ↑ Gerhartz, W. (exec ed.). Ullmann's Encyclopedia of Industrial Chemistry. 5th ed.Vol A1: Deerfield Beach, FL: VCH Publishers, 1985 to Present., p. VA4 (85) 476
- ↑ layton, G.D., F.E. Clayton (eds.) Patty's Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D, 2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons Inc., 1993-1994., p. 562
- ↑ http://cameo.mfa.org/wiki/Methyl_ethyl_ketone_peroxide
- ↑ http://www.anachemia.com/msds/english/5983.pdf
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