# Isoamyl alcohol; 3-methylbutanol — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Isoamyl alcohol; 3-methylbutanol, pel (ppm) is 100; pel (mg/m³) is 360; stel (ppm) is 125; stel (mg/m³) is 450, verified against its source on 2026-08-05.

- **Substance:** Isoamyl alcohol; 3-methylbutanol
- **PEL (ppm):** 100
- **PEL (mg/m³):** 360
- **STEL (ppm):** 125
- **STEL (mg/m³):** 450

## What the source says

> 123513 | | Isoamyl alcohol; 3-methylbutanol | 100 | 360 | | 125 | 450

## Source

- https://www.dir.ca.gov/title8/5155.html

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).