Hazard search
Hydrogen fluoride
- CAS number
- 7664-39-3
- Also known as
- Hydrofluoric acid · Hydrofluoric acid (fluorides) · Hydrogen fluoride (as F) · Hydrogen fluoride (fluorides)
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 1.8 ppm | |
| 8-hour TWA | 1.5 mg/m³ | |
| 15-minute STEL | 3 ppm | |
| 15-minute STEL | 2.5 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| NIOSH 7902 Fluorides by ISE Method document (opens in a new tab) | Active (pump) | Treated 0.8µm MCE filter in cassette | ISE | 225-9001 225-1 |
| NIOSH 7906 Fluorides by IC Method document (opens in a new tab) | Active (pump) | Treated 0.8µm MCE filter in cassette | IC-CD | 225-9031 225-1 |
| OSHA ID 110 | Active (pump) | ISE | 225-9001 225-1 | |
| OSHA ID-110 Fluoride (F & HF) by ISE Method document (opens in a new tab) | Active (pump) | Treated 0.8µm MCE filter in cassette | 225-9001 225-1 | |
| Non-agency Hydrogen fluoride by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-17 810-17L 810-17LL | |
| Non-agency Hydrogen fluoride by Colorimetric analysis | Passive | Gastec Dosi-tube | 810-17D 810-14D | |
| Other | Passive | DR | 810-14D | |
| Other | Passive | DR | 810-17D | |
| Other Contact SKC | Active (pump) | ISE | 225-70A 225-1930 |
Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.
Source: SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)