Phenothiazine — workplace exposure limit
What is the niosh rel (mg/m³) for Phenothiazine — workplace exposure limit?
For Phenothiazine, niosh rel (mg/m³) is TWA 5; cas no. is 92-84-2, verified against its source on 2026-09-08.
NIOSH REL TWA 5 mg/m3 [skin]
— cdc.gov, retrieved 2026-09-08
- Substance
- Phenothiazine verified
- CAS No.
- 92-84-2 verified
- NIOSH REL (mg/m³)
- TWA 5 verified
- PEL (mg/m³)
- 5 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 - Phenothiazine
CAS No.
CAS No. 92-84-2
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
92842 | S | Phenothiazine; dibenzothiazine | -- | 5
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0494.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html