Sulfur hexafluoride — CAS 2551-62-4 — workplace exposure limit
What is the pel (ppm) for Sulfur hexafluoride — CAS 2551-62-4 — workplace exposure limit?
For Sulfur hexafluoride, pel (ppm) is 1000; pel (mg/m³) is 6000; cas no. is 2551-62-4, verified against its source on 2026-08-05.
Sulfur hexafluoride | 2551-62-4 | 1000 | 6000 | - |
— 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
- Sulfur hexafluoride verified
- CAS No.
- 2551-62-4 verified
- PEL (ppm)
- 1000 verified
- PEL (mg/m³)
- 6000 verified
- NIOSH REL (ppm)
- TWA 1000 per cdc.gov
- NIOSH REL (mg/m³)
- 6000 per cdc.gov
What dir.ca.gov says
2551624 | | Sulfur hexafluoride | 1,000 | 6,000
— dir.ca.gov, retrieved 2026-08-05
What cdc.gov says
NIOSH REL TWA 1000 ppm (6000 mg/m3)
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Sulfur hexafluoride
CAS No.
CAS No. 2551-62-4
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/npgd0576.html