Benzenethiol — workplace exposure limit
What is the niosh rel (ppm) for Benzenethiol — workplace exposure limit?
For Benzenethiol, niosh rel (ppm) is C 0.1; niosh rel (mg/m³) is 0.5; cas no. is 108-98-5, verified against its source on 2026-09-08.
NIOSH REL C 0.1 ppm (0.5 mg/m3) [15-minute]
— cdc.gov, retrieved 2026-09-08
- Substance
- Benzenethiol verified
- CAS No.
- 108-98-5 verified
- NIOSH REL (ppm)
- C 0.1 verified
- NIOSH REL (mg/m³)
- 0.5 verified
- PEL (ppm)
- 0.5 per dir.ca.gov
- PEL (mg/m³)
- 2 per dir.ca.gov
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Benzenethiol
CAS No.
CAS No. 108-98-5
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
108985 | | Phenyl mercaptan | 0.5 | 2
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0050.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html