Label abbreviations descriptions

PERCHLOROMETHYL MERCAPTAN†

Chemical Identification
CAS # 594-42-3
Formula

CCl₄S
Synonyms

PCM; PMM; trichloromethane sulfenyl chloride; trichloromethyl sulfur chloride

Physical Properties
Physical description Pale-yellow, oily liquid with an unbearable, acrid odor.
Boiling point 297°F Molecular weight 185.87
Freezing point/melting point Vapor pressure 3 mmHg
Flash point Vapor density 6.414
Specific gravity 1.69 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device Infrared spectrophotometer
Model/Type Miran 1A & 1B
Sampling information
(see manufacturer instructions) 		0.3 ppm@13.2 µm

Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

0.1 ppm (0.8 mg/m³)

 REL-TWA

0.1 ppm (0.8 mg/m³)

 TLV-TWA
 

0.1 ppm [1988]

 PEL-TWA
 

0.1 ppm (0.8 mg/m³)
PEL-STEL REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation

N

 Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N
Notes:

See 29 CFR 1910.1000 Table Z-1.

 Notes:
 

 

 Notes:
 

 

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
 

10 ppm
Carcinogenic classifications: Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 01/28/2021