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Chemical Name:
PCM;PMM;Clairsit;perchloromethyl;rcrawastenumberp118;PERCHLOROMETHANETHIOL;TRICHLOROMETHANETHIOL;carbonsulfoperchloride;Rcra waste number P118;Perchlormethylmerkaptan
Molecular Formula:
Formula Weight:
MOL File:

Perchloromethylmercaptan Properties

Boiling point:
146-148 °C(lit.)
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.)
Clear yellow
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)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
HazardClass  6.1(a)
PackingGroup  I
Hazardous Substances Data 594-42-3(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Perchloromethylmercaptan price More Price(1)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 332895 Trichloromethanesulfenyl chloride 99% 594-42-3 25g $93.6 2017-11-08 Buy

Perchloromethylmercaptan Chemical Properties,Uses,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

Preparation Products

Perchloromethylmercaptan Suppliers

Global( 53)Suppliers
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