# Propylene glycol monomethyl ether — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Propylene glycol monomethyl ether, pel (ppm) is 100; pel (mg/m³) is 360; stel (ppm) is 150; stel (mg/m³) is 540, verified against its source on 2026-08-05.

- **Substance:** Propylene glycol monomethyl ether
- **PEL (ppm):** 100
- **PEL (mg/m³):** 360
- **STEL (ppm):** 150
- **STEL (mg/m³):** 540

## What the source says

> 107982 | S | Propylene glycol monomethyl ether | 100 | 360 | | 150 | 540

## 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/).