# Hexachloroethane; perchloroethane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Hexachloroethane; perchloroethane, pel (ppm) is 1; pel (mg/m³) is 10, verified against its source on 2026-08-05.

- **Substance:** Hexachloroethane; perchloroethane
- **PEL (ppm):** 1
- **PEL (mg/m³):** 10

## What the source says

> 67721 | S | Hexachloroethane; perchloroethane | 1 | 10

## 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/).