Selenium hexafluoride — workplace exposure limit
What is the pel (ppm) for Selenium hexafluoride — workplace exposure limit?
For Selenium hexafluoride, pel (ppm) is 0.05; pel (mg/m³) is 0.4; cas no. is 7783791, verified against its source on 2026-08-05.
7783791 | | Selenium hexafluoride | 0.05 | 0.4
— dir.ca.gov, retrieved 2026-08-05
0.05
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
- Substance
- Selenium hexafluoride verified
- CAS No.
- 7783791 verified
- PEL (ppm)
- 0.05 verified
- PEL (mg/m³)
- 0.4 verified
- NIOSH REL (ppm)
- TWA 0.05 per cdc.gov
What cdc.gov says
NIOSH REL TWA 0.05 ppm
— cdc.gov, retrieved 2026-09-08
What osha.gov says
Selenium hexafluoride (as Se) | 7783-79-1 | 0.05 | 0.4 | - |
— osha.gov, retrieved 2026-08-05
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0551.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1