Hydrogen peroxide — workplace exposure limit
What is the pel (ppm) for Hydrogen peroxide — workplace exposure limit?
For Hydrogen peroxide, pel (ppm) is 1; pel (mg/m³) is 1.4; cas no. is 7722-84-1, verified against its source on 2026-08-05.
Hydrogen peroxide | 7722-84-1 | 1 | 1.4 | - |
— osha.gov, retrieved 2026-08-05
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
- Hydrogen peroxide verified
- CAS No.
- 7722-84-1 verified
- PEL (ppm)
- 1 verified
- PEL (mg/m³)
- 1.4 verified
- NIOSH REL (ppm)
- TWA 1 per cdc.gov
- NIOSH REL (mg/m³)
- 1.4 per cdc.gov
What cdc.gov says
NIOSH REL TWA 1 ppm (1.4 mg/m3)
— cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
7722841 | | Hydrogen peroxide, as H$2O$2 | 1 | 1.4
— dir.ca.gov, retrieved 2026-08-05
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0335.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html