# 1,1,2,2-Tetrachloroethane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For 1,1,2,2-Tetrachloroethane, cas no. is 79-34-5; pel (ppm) is 5; pel (mg/m³) is 35, verified against its source on 2026-08-05.

- **Substance:** 1,1,2,2-Tetrachloroethane
- **CAS No.:** 79-34-5
- **PEL (ppm):** 5
- **PEL (mg/m³):** 35

## What the source says

> 1,1,2,2-Tetrachloroethane | 79-34-5 | 5 | 35 | X |

## Source

- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

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/).