Sulfuric acid — workplace exposure limit
What is the pel (mg/m³) for Sulfuric acid — workplace exposure limit?
For Sulfuric acid, pel (mg/m³) is 1; cas no. is 7664-93-9, verified against its source on 2026-08-05.
Sulfuric acid | 7664-93-9 | - | 1 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Sulfuric acid verified
- CAS No.
- 7664-93-9 verified
- PEL (mg/m³)
- 1 verified
- STEL (mg/m³)
- 3 per dir.ca.gov
- NIOSH REL (mg/m³)
- TWA 1 per cdc.gov
What cdc.gov says
NIOSH REL TWA 1 mg/m3
— cdc.gov, retrieved 2026-09-08
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
PEL (mg/m³)
osha.gov says pel (mg/m³) is 1, as of 2026-08-05.
Sulfuric acid | 7664-93-9 | - | 1 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 0.1, as of 2026-08-05.
7664939 | | Sulfuric acid | -- | 0.1 | | -- | 3
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/npgd0577.html