Sodium azide — workplace exposure limit
What is the pel (ppm) for Sodium azide — workplace exposure limit?
For Sodium azide, pel (ppm) is 0.1; pel (mg/m³) is 0.3; ceiling is C; cas no. is 26628228, verified against its source on 2026-08-05.
26628228 | S | Sodium azide | 0.1 | 0.3 | C
— dir.ca.gov, retrieved 2026-08-05
0.1
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
- Sodium azide verified
- CAS No.
- 26628228 verified
- PEL (ppm)
- 0.1 verified
- PEL (mg/m³)
- 0.3 verified
- Ceiling
- C verified
- NIOSH REL, as stated
- C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin] per cdc.gov
What cdc.gov says
NIOSH REL C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin]
— cdc.gov, retrieved 2026-09-08
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0560.html