---
type: threshold
id: 1-1-2-2-tetrachloro-1-2-difluoroethane
asset: workplace-exposure-limits
title: "1,1,2,2-Tetrachloro-1,2-difluoroethane — 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-Tetrachloro-1,2-difluoroethane | 76-12-0 | 500 | 4170 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "1,1,2,2-Tetrachloro-1,2-difluoroethane"
cas_number: "76-12-0"
pel_ppm: "500"
pel_mgm3: "4170"
verified: true
---
**Substance:** 1,1,2,2-Tetrachloro-1,2-difluoroethane

**CAS No.:** 76-12-0

**PEL (ppm):** 500

**PEL (mg/m³):** 4170

> 1,1,2,2-Tetrachloro-1,2-difluoroethane | 76-12-0 | 500 | 4170 | - |

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