---
type: threshold
id: perchloroethylene
asset: workplace-exposure-limits
title: "Perchloroethylene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "127184 | | Perchloroethylene | 25 | 170 | 300 ppm | 100 | 685"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Perchloroethylene"
pel_ppm: "25"
pel_mgm3: "170"
ceiling: "300 ppm"
stel_ppm: "100"
stel_mgm3: "685"
verified: true
---
**Substance:** Perchloroethylene

**PEL (ppm):** 25

**PEL (mg/m³):** 170

**Ceiling:** 300 ppm

**STEL (ppm):** 100

**STEL (mg/m³):** 685

> 127184 | | Perchloroethylene | 25 | 170 | 300 ppm | 100 | 685

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