1,3-Dichloropropene — workplace exposure limit
What is the niosh rel (ppm) for 1,3-Dichloropropene — workplace exposure limit?
For 1,3-Dichloropropene, niosh rel (ppm) is TWA 1; niosh rel (mg/m³) is 5; cas no. is 542-75-6, verified against its source on 2026-09-08.
NIOSH REL Ca TWA 1 ppm (5 mg/m3) [skin]
— cdc.gov, retrieved 2026-09-08
- Substance
- 1,3-Dichloropropene verified
- CAS No.
- 542-75-6 verified
- NIOSH REL (ppm)
- TWA 1 verified
- NIOSH REL (mg/m³)
- 5 verified
- PEL (ppm)
- 1 per dir.ca.gov
- 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 - 1,3-Dichloropropene
CAS No.
CAS No. 542-75-6
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
542756 | S | Dichloropropene | 1 | 5
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0199.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html