Hazard search
Acetic anhydride
- CAS number
- 108-24-7
- Also known as
- Acetic acid anhydride · Acetic oxide · Acetyl acetate · Acetyl oxide · Ethanoic anhydride · Ethanoyl ethanoate
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 0.5 ppm | |
| 8-hour TWA | 2.5 mg/m³ | |
| 15-minute STEL | 2 ppm | |
| 15-minute STEL | 10 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| NIOSH 3506 Acetic anhydride by VIS Method document (opens in a new tab) | Active (pump) | Fritted midget impinger | VAS | 225-36-2 225-22 |
| OSHA 102 Acetic anhydride by GC-NPD Method document (opens in a new tab) | Active (pump) | Coated glass fibre filter in cassette | GC-NPD | 225-9010 225-1 |
| Non-agency Acetic anhydride by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-81 810-81L | |
| Non-agency Acetic anhydride by Colorimetric analysis | Passive | Gastec Dosi-tube | 810-81D | |
| 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)