Dichlorodifluoromethane — workplace exposure limit
What is the pel (ppm) for Dichlorodifluoromethane — workplace exposure limit?
For Dichlorodifluoromethane, pel (ppm) is 1000; pel (mg/m³) is 4950; cas no. is 75-71-8, verified against its source on 2026-08-05.
Dichlorodifluoromethane | 75-71-8 | 1000 | 4950 | - |
— osha.gov, retrieved 2026-08-05
1000
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
- Dichlorodifluoromethane verified
- CAS No.
- 75-71-8 verified
- PEL (ppm)
- 1000 verified
- PEL (mg/m³)
- 4950 verified
- Ceiling
- 6200 ppm per dir.ca.gov
- NIOSH REL (ppm)
- TWA 1000 per cdc.gov
- NIOSH REL (mg/m³)
- 4950 per cdc.gov
What dir.ca.gov says
75718 | | Dichlorodifluoromethane | 1000 | 4950 | 6200 ppm
— dir.ca.gov, retrieved 2026-08-05
What cdc.gov says
NIOSH REL TWA 1000 ppm (4950 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/npgd0192.html