# Trichloroethylene; trichloro-ethene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Trichloroethylene; trichloro-ethene, pel (ppm) is 25; pel (mg/m³) is 135; ceiling is 300 ppm; stel (ppm) is 100; stel (mg/m³) is 537, verified against its source on 2026-08-05.

- **Substance:** Trichloroethylene; trichloro-ethene
- **PEL (ppm):** 25
- **PEL (mg/m³):** 135
- **Ceiling:** 300 ppm
- **STEL (ppm):** 100
- **STEL (mg/m³):** 537

## What the source says

> 79016 | | Trichloroethylene; trichloro-ethene | 25 | 135 | 300 ppm | 100 | 537

## 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/).