1,3-Butadiene — workplace exposure limit
What is the niosh rel, as stated for 1,3-Butadiene — workplace exposure limit?
For 1,3-Butadiene, niosh rel, as stated is Ca See Appendix A; cas no. is 106-99-0, verified against its source on 2026-09-08.
NIOSH REL Ca See Appendix A
— cdc.gov, retrieved 2026-09-08
- Substance
- 1,3-Butadiene verified
- CAS No.
- 106-99-0 verified
- NIOSH REL, as stated
- Ca See Appendix A verified
- PEL (ppm)
- 1 per dir.ca.gov
- PEL (mg/m³)
- 2.2 per dir.ca.gov
- STEL (ppm)
- 5 per dir.ca.gov
- STEL (mg/m³)
- 11 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-Butadiene
CAS No.
CAS No. 106-99-0
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
106990 | | 1,3-Butadiene (see also section 5201) | 1 | 2.2 | | 5 | 11
— dir.ca.gov, retrieved 2026-08-05
What osha.gov says
Butadiene (1,3-Butadiene); See 29 CFR 1910.1051; 29 CFR 1910.19(l) | 106-99-0 | 1 ppm/5 ppm STEL | - | - |
— osha.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0067.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1