Phenylphosphine — workplace exposure limit
What is the pel (ppm) for Phenylphosphine — workplace exposure limit?
For Phenylphosphine, pel (ppm) is 0.05; pel (mg/m³) is 0.25; ceiling is C; cas no. is 638211, verified against its source on 2026-08-05.
638211 | | Phenylphosphine | 0.05 | 0.25 | C
— 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
- Phenylphosphine verified
- CAS No.
- 638211 verified
- PEL (ppm)
- 0.05 verified
- PEL (mg/m³)
- 0.25 verified
- Ceiling
- C verified
- NIOSH REL (ppm)
- C 0.05 per cdc.gov
- NIOSH REL (mg/m³)
- 0.25 per cdc.gov
What cdc.gov says
NIOSH REL C 0.05 ppm (0.25 mg/m3)
— cdc.gov, retrieved 2026-09-08
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0501.html