PERCHLOROMETHYL MERCAPTAN†

Chemical Identification
Chemical Identification
CAS # 594-42-3
Formula

CCl₄S

Synonyms

PCM; PMM; trichloromethane sulfenyl chloride; trichloromethyl sulfur chloride

Physical Properties
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
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.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
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
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
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Perchloromethyl mercaptan

NIOSH: Pocket Guide to Chemical Hazards - Perchloromethyl mercaptan

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Perchloromethyl mercaptan. See annual publication for most recent information.

Last Updated Date : 01/28/2021