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CAS No.594-42-3
Chemical Name:Perchloromethylmercaptan
Synonyms:PCM;PMM;Clairsit;perchloromethyl;rcrawastenumberp118;PERCHLOROMETHANETHIOL;TRICHLOROMETHANETHIOL;carbonsulfoperchloride;Rcra waste number P118;Perchlormethylmerkaptan
Molecular Formula:CCl4S
Formula Weight:185.89
MOL File:594-42-3.mol
Perchloromethylmercaptan Property
bp : 146-148 °C(lit.)
density : 1.7 g/mL at 25 °C(lit.)
vapor density : 6.41 (vs air)
vapor pressure : 2.02 psi ( 20 °C)
refractive index : n20/D 1.537(lit.)
CAS DataBase Reference: 594-42-3(CAS DataBase Reference)
NIST Chemistry Reference: Methanesulfenyl chloride, trichloro-(594-42-3)
EPA Substance Registry System: Methanesulfenyl chloride, trichloro-(594-42-3)
Hazard Codes : T,T+,N
Risk Statements : 23/24/25-34-26-25-21-52/53
Safety Statements : 26-36/37/39-45-7/9-28A-25-61
RIDADR : UN 1670 6.1/PG 1
WGK Germany : 3
RTECS : PB0370000
F : 13-21
HazardClass : 6.1(a)
PackingGroup : I
Hazardous Substances Data: 594-42-3(Hazardous Substances Data)

Perchloromethylmercaptan Chemical Properties,Usage,Production

Chemical Properties
General Description
A yellow oily liquid with an offensive odor. Insoluble in water. Density 1.72 g / cm3. Hence sinks in water. Nonflammable but supports combustion. Very toxic by inhalation or skin absorption.
Air & Water Reactions
Insoluble in water. Slowly decomposed by moisture in the air. Reacts with hot water to give carbon dioxide, hydrochloric acid and sulfur.
Reactivity Profile
Perchloromethylmercaptan is incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Reacts readily with oxidizing agents.
Health Hazard
May cause death or permanent injury after short exposure to small quantities, strong irritant to eyes and skin. Inhalation may cause severe irritation of the upper respiratory tract. It also is a strong irritant to the eyes and skin. Brief exposure to lower concentrations may produce central nervous system depression and lung, liver, and heart congestion. Severe exposures may be fatal. Exposure of eyes may lead to severe conjunctivitis or corneal damage. The liquid is irritating to the skin, and may be absorbed through the skin in quantities sufficient to cause general toxic effects. Ingestion may cause damage to mucous membranes and result in pain and burning of the mouth and throat, nausea, vomiting, cramps, and diarrhea. In severe cases, tissue ulceration and CNS depression may occur.
Fire Hazard
Very irritating vapors formed from hot material; may form phosgene gas, hydrogen chloride, and sulfur dioxide. At high temperatures Perchloromethylmercaptan will decompose to carbon tetrachloride, sulfur chloride, heavy oil polymers, phosgene gas, hydrogen chloride, and sulfur dioxide. Reacts with iron or steel, evolving carbon tetrachloride. Corrosive to most metals. Reacts with water only when hot to give carbon dioxide, hydrochloric acid, and sulfur. Hazardous polymerization may not occur.
Perchloromethylmercaptan Preparation Products And Raw materials
Raw materials
Chlorine Carbon disulphide
Preparation Products
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