Asphalt fumes — workplace exposure limit
What is the niosh rel (mg/m³) for Asphalt fumes — workplace exposure limit?
For Asphalt fumes, niosh rel (mg/m³) is C 5; cas no. is 8052-42-4, verified against its source on 2026-09-08.
NIOSH REL Ca C 5 mg/m3 [15-minute]
— cdc.gov, retrieved 2026-09-08
- Substance
- Asphalt fumes verified
- CAS No.
- 8052-42-4 verified
- NIOSH REL (mg/m³)
- C 5 verified
- PEL (mg/m³)
- 5 per dir.ca.gov
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Asphalt fumes
CAS No.
CAS No. 8052-42-4
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
8052424 | | Asphalt (petroleum) fumes | -- | 5
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0042.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html