Isoamyl alcohol; 3-methylbutanol — workplace exposure limit
What is the pel (ppm) for Isoamyl alcohol; 3-methylbutanol — workplace exposure limit?
For Isoamyl alcohol; 3-methylbutanol, pel (ppm) is 100; pel (mg/m³) is 360; cas no. is 123513, verified against its source on 2026-08-05.
123513 | | Isoamyl alcohol; 3-methylbutanol | 100 | 360 | | 125 | 450
— dir.ca.gov, retrieved 2026-08-05
100
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
- Substance
- Isoamyl alcohol; 3-methylbutanol verified
- CAS No.
- 123513 verified
- PEL (ppm)
- 100 verified
- PEL (mg/m³)
- 360 verified
- STEL (ppm)
- 125 verified
- STEL (mg/m³)
- 450 verified
- NIOSH REL (ppm)
- TWA 100 per cdc.gov
- NIOSH REL (mg/m³)
- 360 per cdc.gov
What cdc.gov says
NIOSH REL TWA 100 ppm (360 mg/m3) ST 125 ppm (450 mg/m3)
— cdc.gov, retrieved 2026-09-08
What osha.gov says
Isoamyl alcohol (primary and secondary) | 123-51-3 | 100 | 360 | - |
— osha.gov, retrieved 2026-08-05
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0348.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1