---
type: threshold
id: propylene-glycol-monomethyl-ether
asset: workplace-exposure-limits
title: "Propylene glycol monomethyl ether — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "107982 | S | Propylene glycol monomethyl ether | 100 | 360 | | 150 | 540"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Propylene glycol monomethyl ether"
pel_ppm: "100"
pel_mgm3: "360"
stel_ppm: "150"
stel_mgm3: "540"
verified: true
---
**Substance:** Propylene glycol monomethyl ether

**PEL (ppm):** 100

**PEL (mg/m³):** 360

**STEL (ppm):** 150

**STEL (mg/m³):** 540

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

Source: <https://www.dir.ca.gov/title8/5155.html>