Perchloromethyl mercaptan

Agent Name
Perchloromethyl mercaptan
CAS Number
594-42-3
Formula
C-Cl4-S
Major Category
Toxic Gases & Vapors
Perchloromethyl mercaptan formula graphical representation
Synonyms
(Trichloromethane)sulfenyl chloride; Clairsit; Mercaptan methylique perchlore [French]; Methanesulfenic acid, trichloro-, chloride; Methanesulfenyl chloride, trichloro-; Methanethiol, trichloro-; PCM; PMM; Perchlorinemethylmercaptan; Perchlormethylmerkaptan [Czech]; Perchloro-methyl-mercaptan (DOT); Perchloromethanethiol; Perchloromethyl mercaptan; Perchloromethylmercaptan; Thiocarbonyl tetrachloride; Trichlormethyl sulfur chloride; Trichlorofluoromethane; Trichloromethane sulfenyl chloride; Trichloromethanesulphenyl chloride; Trichloromethanethiol; Trichloromethyl sulfochloride; Trichloromethylsulfenyl chloride; Trichloromethylsulphenyl chloride; [ChemIDplus] UN1670
Category
Other Toxic Gases & Vapors
Description
Pale-yellow, oily liquid with an unbearable, acrid odor; [NIOSH]
Sources/Uses
Used in the production of dyes and fungicides; [ACGIH]
Comments
Exposure to high concentrations may cause pulmonary edema and death. [ACGIH] A severe skin, eye, and respiratory tract irritant; Inhalation of high concentrations can cause pulmonary edema; [ICSC] "Perchloromethyl mercaptan is a lachrymator and has tear gas properties." [CHEMINFO] Liquid may cause severe corneal burns if not rinsed out promptly; [CHRIS]
Biomedical References

Exposure Assessment

Skin Designation (ACGIH)
Insufficient data
TIH
Yes
TLV (ACGIH)
0.1 ppm
PEL (OSHA)
0.1 ppm
IDLH (NIOSH)
10 ppm
Excerpts from Documentation for IDLHs
Other human data: It has been stated that perchloromethyl mercaptan is about one­sixth as toxic as phosgene [Prentiss 1937].
Vapor Pressure
3 mm Hg
Odor Threshold Low
0.001 ppm
Lethal Concentration
LC50 (rat) = 11 ppm/1H
Explanatory Notes
Odor threshold from CHEMINFO; VP from HSDB;

Adverse Effects

Lachrymator
Yes
Toxic Pneumonitis
Yes
Dermatotoxin
Skin burns

Diseases, Processes, and Activities Linked to This Agent

Diseases

Occupational diseases associated with exposure to this agent: