Zirconium compounds (as Zr) — CAS 7440-67-7 — workplace exposure limit
What is the pel (mg/m³) for Zirconium compounds (as Zr) — CAS 7440-67-7 — workplace exposure limit?
For Zirconium compounds (as Zr), pel (mg/m³) is 5; cas no. is 7440-67-7, verified against its source on 2026-08-05.
Zirconium compounds (as Zr) | 7440-67-7 | - | 5 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Zirconium compounds (as Zr) verified
- CAS No.
- 7440-67-7 verified
- PEL (mg/m³)
- 5 verified
- NIOSH REL (mg/m³)
- TWA 5 per cdc.gov
- STEL (mg/m³)
- 10 per dir.ca.gov
What cdc.gov says
NIOSH REL TWA 5 mg/m3 ST 10 mg/m3
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Zirconium compounds (as Zr)
CAS No.
CAS No. 7440-67-7 (Metal)
What dir.ca.gov says
Zirconium compounds, as Zr | -- | 5 | | -- | 10
— dir.ca.gov, retrieved 2026-09-25
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0677.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html