# Methyl propyl ketone; 2-pentanone — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methyl propyl ketone; 2-pentanone, pel (ppm) is 200; pel (mg/m³) is 700; stel (ppm) is 250; stel (mg/m³) is 875, verified against its source on 2026-08-05.

- **Substance:** Methyl propyl ketone; 2-pentanone
- **PEL (ppm):** 200
- **PEL (mg/m³):** 700
- **STEL (ppm):** 250
- **STEL (mg/m³):** 875

## What the source says

> 107879 | | Methyl propyl ketone; 2-pentanone | 200 | 700 | | 250 | 875

## 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/).