Hazard search
Formic acid
- CAS number
- 64-18-6
- Also known as
- Methanoic acid
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 5 ppm | |
| 8-hour TWA | 9.6 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| NIOSH 2011 Formic acid by IC Method document (opens in a new tab) | Active (pump) | PTFE filter (5µm) with Silica gel tube (400/200mg) | IC-CD | 225-1728A 225-3-25LF 226-10-03 225-1 |
| Non-agency Formic acid by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-81 810-81L | |
| Non-agency Formic acid by Colorimetric analysis | Passive | Gastec Dosi-tube | 810-81D | |
| Non-agency Acetic acid and formic acid by IC /CD Method document (opens in a new tab) | Passive | Passive sampler | 500-200 | |
| Other | Passive | IC/CD | 500-200 | |
| Other | Passive | DR | 810-81D |
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)