2,4-D — workplace exposure limit
What is the niosh rel (mg/m³) for 2,4-D — workplace exposure limit?
For 2,4-D, niosh rel (mg/m³) is TWA 10; cas no. is 94-75-7, verified against its source on 2026-09-08.
NIOSH REL TWA 10 mg/m3
— cdc.gov, retrieved 2026-09-08
- Substance
- 2,4-D verified
- CAS No.
- 94-75-7 verified
- NIOSH REL (mg/m³)
- TWA 10 verified
- PEL (mg/m³)
- 10 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 - 2,4-D
CAS No.
CAS No. 94-75-7
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
94757 | | 2,4-D;2,4-dichlorophenoxyacetic acid | -- | 10
— dir.ca.gov, retrieved 2026-08-05
What osha.gov says
2,4-D (Dichlorophenoxyacetic acid) | 94-75-7 | - | 10 | - |
— osha.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0173.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1