n-Butyl alcohol — CAS 71-36-3 — workplace exposure limit
What is the pel (ppm) for n-Butyl alcohol — CAS 71-36-3 — workplace exposure limit?
For n-Butyl alcohol, pel (ppm) is disputed: 100 per osha.gov, 50 per dir.ca.gov; pel (mg/m³) is disputed: 300 per osha.gov, 150 per dir.ca.gov; cas no. is 71-36-3, verified against its source on 2026-08-05.
n-Butyl alcohol | 71-36-3 | 100 | 300 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- n-Butyl alcohol verified
- CAS No.
- 71-36-3 verified
- PEL (ppm)
- 100 sources disagree
- PEL (mg/m³)
- 300 sources disagree
- Ceiling notation
- the values given in the PEL columns are ceiling values per dir.ca.gov
- NIOSH REL (ppm)
- C 50 per cdc.gov
- NIOSH REL (mg/m³)
- 150 per cdc.gov
What cdc.gov says
NIOSH REL C 50 ppm (150 mg/m3) [skin]
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - n-Butyl alcohol
CAS No.
CAS No. 71-36-3
What dir.ca.gov says
71363 | | 1-Butanol; see n-Butyl alcohol
— 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 100, as of 2026-08-05.
n-Butyl alcohol | 71-36-3 | 100 | 300 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 50, as of 2026-09-28.
71363 | S | n-Butyl alcohol; 1-butanol | 50 | 150 | C
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 300, as of 2026-08-05.
n-Butyl alcohol | 71-36-3 | 100 | 300 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 150, as of 2026-09-28.
71363 | S | n-Butyl alcohol; 1-butanol | 50 | 150 | C
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/npgd0076.html