---
type: threshold
id: dichlorofluoromethane-fluorocarbon-21
asset: workplace-exposure-limits
title: "Dichlorofluoromethane; Fluorocarbon 21 — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "75434 | | Dichlorofluoromethane; Fluorocarbon 21 | 10 | 42"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Dichlorofluoromethane; Fluorocarbon 21"
pel_ppm: "10"
pel_mgm3: "42"
verified: true
---
**Substance:** Dichlorofluoromethane; Fluorocarbon 21

**PEL (ppm):** 10

**PEL (mg/m³):** 42

> 75434 | | Dichlorofluoromethane; Fluorocarbon 21 | 10 | 42

Source: <https://www.dir.ca.gov/title8/5155.html>