Potassium hydroxide — workplace exposure limit
What is the niosh rel (mg/m³) for Potassium hydroxide — workplace exposure limit?
For Potassium hydroxide, niosh rel (mg/m³) is C 2; cas no. is 1310-58-3, verified against its source on 2026-09-08.
NIOSH REL C 2 mg/m3
— cdc.gov, retrieved 2026-09-08
- Substance
- Potassium hydroxide verified
- CAS No.
- 1310-58-3 verified
- NIOSH REL (mg/m³)
- C 2 verified
- PEL (mg/m³)
- 2 per dir.ca.gov
- Ceiling
- C 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 - Potassium hydroxide
CAS No.
CAS No. 1310-58-3
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
1310583 | | Potassium hydroxide; caustic potash | -- | 2 | C
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0523.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html