sec-Butyl alcohol — workplace exposure limit
What is the pel (ppm) for sec-Butyl alcohol — workplace exposure limit?
For sec-Butyl alcohol, pel (ppm) is 150; pel (mg/m³) is 450; cas no. is 78-92-2, verified against its source on 2026-08-05.
sec-Butyl alcohol | 78-92-2 | 150 | 450 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- sec-Butyl alcohol verified
- CAS No.
- 78-92-2 verified
- PEL (ppm)
- 150 verified
- PEL (mg/m³)
- 450 verified
- NIOSH REL (ppm)
- TWA 100 per cdc.gov
- NIOSH REL (mg/m³)
- 305 per cdc.gov
What cdc.gov says
NIOSH REL TWA 100 ppm (305 mg/m3) ST 150 ppm (455 mg/m3)
— cdc.gov, retrieved 2026-09-08
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 150, as of 2026-08-05.
sec-Butyl alcohol | 78-92-2 | 150 | 450 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 100, as of 2026-08-05.
78922 | | sec-Butyl alcohol | 100 | 305
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 450, as of 2026-08-05.
sec-Butyl alcohol | 78-92-2 | 150 | 450 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 305, as of 2026-08-05.
78922 | | sec-Butyl alcohol | 100 | 305
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/npgd0077.html