PHENYL MERCAPTAN

Chemical Identification
Chemical Identification
CAS # 108-98-5
Formula

C₆H₆S

Synonyms

mercaptobenzene; phenyl mercaptan; thiophenol; benzenethiol

Physical Properties
Physical Properties
Physical description Clear liquid with a repulsive odor.
Boiling point 336°F Molecular weight 110.17
Freezing point/melting point 5.4°F Vapor pressure 1 mmHg at 65.48°F
Flash point 132°F Vapor density
Specific gravity 1.073 Ionization potential 8.33 eV
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.) P105
Sampling group
Sampler/Sampling media GFF (37 mm Gelman Type A) coated with mercuric acetate [SKC 225-9007]
Sampling time*
Sampling volume (TWA)*

20 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA PV2075 (partially validated)
Notes

Protect samples from light until analysis.

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
Model/Type
Sampling information
(see manufacturer instructions)
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
 

 

REL-TWA
 

 

TLV-TWA
 

0.1 ppm [2001]

PEL-TWA
 

0.5 ppm (2 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

0.1 ppm (0.5 mg/m³) [15 minutes]

TLV-C
 

 

PEL-C
 

 

Skin notation
 

NA

Skin notation
 

N

Skin notation
 

Y

Skin notation
 

N

Notes:
 

Not established

Notes:
 

 

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
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 - Phenyl mercaptan

NIOSH: Pocket Guide to Chemical Hazards - Benzenethiol

Literature References

 

Last Updated Date : 01/08/2021