Diphenylamine — workplace exposure limit
What is the niosh rel (mg/m³) for Diphenylamine — workplace exposure limit?
For Diphenylamine, niosh rel (mg/m³) is TWA 10; cas no. is 122-39-4, verified against its source on 2026-09-08.
NIOSH REL TWA 10 mg/m3
— cdc.gov, retrieved 2026-09-08
- Substance
- Diphenylamine verified
- CAS No.
- 122-39-4 verified
- NIOSH REL (mg/m³)
- TWA 10 verified
- PEL (mg/m³)
- 10 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 - Diphenylamine
CAS No.
CAS No. 122-39-4
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
122394 | | Diphenylamine; N-phenylaniline | -- | 10
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0240.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html