Copper — workplace exposure limit
What is the cas no. for Copper — workplace exposure limit?
For Copper, cas no. is 7440-50-8, verified against its source on 2026-08-05.
Copper | 7440-50-8 | - | - | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Copper verified
- CAS No.
- 7440-50-8 verified
- NIOSH REL (mg/m³)
- TWA 1 per cdc.gov
- PEL (mg/m³)
- 0.1 per dir.ca.gov
What cdc.gov says
NIOSH REL TWA 1 mg/m3
— cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
7440508 | | Copper metal fume, as Cu | -- | 0.1
— dir.ca.gov, retrieved 2026-08-05
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0150.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html