Hazard search
Diacetyl
- CAS number
- 431-03-8
- Also known as
- 2,3-Butanedione
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 0.02 ppm | |
| 8-hour TWA | 0.07 mg/m³ | |
| 15-minute STEL | 0.1 ppm | |
| 15-minute STEL | 0.36 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| NIOSH 2557 Diacetyl by GC-FID Method document (opens in a new tab) | Active (pump) | Anasorb CMS tube (150/75mg) | ||
| OSHA 1012 | Active (pump) | GC-FID | 226-10-03 | |
| OSHA 1012 GC-FID Method document (opens in a new tab) | Active (pump) | Sorbent Tube | GC-ECD | 226-183 |
| OSHA PV2118 Diacetyl by GC-FID Method document (opens in a new tab) | Active (pump) | Two silica gel tubes in series (150/75mg) | 226-10 | |
| Non-agency Diacetyl by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-92 |
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)