Hazard search
Silicon (inhalable)
- CAS number
- 7440-21-3
- Also known as
- Si · Silicon (particulates, respirable) · Silicon (particulates, total) · Silicon (respirable)
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 10 mg/m³ | Silicon (inhalable) |
| 8-hour TWA | 4 mg/m³ | Silicon (respirable) |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 14/4 General inhalable or respirable dusts by gravimetric analysis Method document (opens in a new tab) | Active (pump) | IOM & foam (or cyclone) with GF filter | 225-70A 225-772 225-69 225-58F | |
| MDHS 14/4 General inhalable or respirable dusts by gravimetric analysis (total inhalable) Method document (opens in a new tab) | Active (pump) | IOM with GF filter | 225-70A 225-58F | |
| NIOSH 500 Particulates not otherwise regulated (total inhalable) by Gravimetric analysis Method document (opens in a new tab) | Active (pump) | 37mm, 5µm PVC filter in cassette | GR | 225-5-37-P 225-2LF 225-1 |
| NIOSH 600 Particulates not otherwise regulated (respirable) by Gravimetric analysis Method document (opens in a new tab) | Active (pump) | Cyclone & 5µm PVC filter in cassette | GR | 225-01-02 225-5-37-P 225-3LF 225-1 225-8208A 225-3851-PW |
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)