Hafnium — workplace exposure limit
What is the pel (mg/m³) for Hafnium — workplace exposure limit?
For Hafnium, pel (mg/m³) is 0.5; cas no. is 7440-58-6, verified against its source on 2026-08-05.
Hafnium | 7440-58-6 | - | 0.5 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Hafnium verified
- CAS No.
- 7440-58-6 verified
- PEL (mg/m³)
- 0.5 verified
- NIOSH REL (mg/m³)
- TWA 0.5 per cdc.gov
What dir.ca.gov says
7440586 | | Hafnium | -- | 0.5
— dir.ca.gov, retrieved 2026-08-05
What cdc.gov says
NIOSH REL TWA 0.5 mg/m3
— cdc.gov, retrieved 2026-09-08
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0309.html