Ethyl bromide — CAS 74-96-4 — workplace exposure limit
What is the pel (ppm) for Ethyl bromide — CAS 74-96-4 — workplace exposure limit?
For Ethyl bromide, pel (ppm) is disputed: 200 per osha.gov, 5 per dir.ca.gov; pel (mg/m³) is disputed: 890 per osha.gov, 22 per dir.ca.gov; cas no. is 74-96-4, verified against its source on 2026-08-05.
Ethyl bromide | 74-96-4 | 200 | 890 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Ethyl bromide verified
- CAS No.
- 74-96-4 verified
- PEL (ppm)
- 200 sources disagree
- PEL (mg/m³)
- 890 sources disagree
- NIOSH REL, as stated
- See Appendix D per cdc.gov
What cdc.gov says
NIOSH REL See Appendix D
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Ethyl bromide
CAS No.
CAS No. 74-96-4
What dir.ca.gov says
74964 | | Bromoethane; see Ethyl bromide
— dir.ca.gov, retrieved 2026-08-05
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 (ppm)
osha.gov says pel (ppm) is 200, as of 2026-08-05.
Ethyl bromide | 74-96-4 | 200 | 890 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 5, as of 2026-08-05.
74964 | S | Ethyl bromide | 5 | 22
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 890, as of 2026-08-05.
Ethyl bromide | 74-96-4 | 200 | 890 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 22, as of 2026-08-05.
74964 | S | Ethyl bromide | 5 | 22
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/npgd0265.html