---
type: threshold
id: 1-1-2-2-tetrachloroethane
asset: workplace-exposure-limits
title: "1,1,2,2-Tetrachloroethane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "1,1,2,2-Tetrachloroethane | 79-34-5 | 5 | 35 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "1,1,2,2-Tetrachloroethane"
cas_number: "79-34-5"
pel_ppm: "5"
pel_mgm3: "35"
verified: true
---
**Substance:** 1,1,2,2-Tetrachloroethane

**CAS No.:** 79-34-5

**PEL (ppm):** 5

**PEL (mg/m³):** 35

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

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