---
type: threshold
id: hydrogen-fluoride-as-f-2
asset: workplace-exposure-limits
title: "Hydrogen fluoride, as F — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "7664393 | S | Hydrogen fluoride, as F | 0.4 | 0.33 | | 1 | 0.83"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Hydrogen fluoride, as F"
pel_ppm: "0.4"
pel_mgm3: "0.33"
stel_ppm: "1"
stel_mgm3: "0.83"
verified: true
---
**Substance:** Hydrogen fluoride, as F

**PEL (ppm):** 0.4

**PEL (mg/m³):** 0.33

**STEL (ppm):** 1

**STEL (mg/m³):** 0.83

> 7664393 | S | Hydrogen fluoride, as F | 0.4 | 0.33 | | 1 | 0.83

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