Hazard search
Magnesium oxide (inhalable)
- CAS number
- 1309-48-4
- Also known as
- Maglite · Magnesia · Magnesium monoxide · Magnesium oxide (as Mg) (inhalable dust) · Magnesium oxide (as Mg) (respirable dust) · Magnesium oxide (as Mg, elements by ICP) · Magnesium oxide (respirable dust and fume) · Magnesium oxide fume (respirable dust) · Magnesium oxide fume (total dust)
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 10 mg/m³ | Magnesium oxide (inhalable) |
| 8-hour TWA | 4 mg/m³ | Magnesium oxide (respirable dust and fume) |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 14/4 General inhalable or respirable dusts by gravimetric analysis (respirable) Method document (opens in a new tab) | Active (pump) | IOM & foam (or cyclone) with GF filter | GR | 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 | GR | 225-70A 225-58F |
| NIOSH 7300 Elements by ICP (Nitric/perchloric acid ashing) Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in 37mm cassette | 225-3-01 225-1 | |
| NIOSH 7303 Elements by ICP (Hot block/HCl/HNO3 Digestion) Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in 37mm cassette | ICP-AES | 225-3-01 225-1 |
| OSHA ID 121 | Active (pump) | AA or AES | 225-3-01 225-1 225-503 225-105 | |
| OSHA ID-121 Metal & metalloid particulates by AAS Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in preloaded cassette | 225-3-01 225-1 | |
| OSHA ID-121 Metal & metalloid particulates by AAS Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in preloaded cassette with cyclone | 225-3-01 225-105 225-1 | |
| ISO 10882-1: 2011 Welding fumes by gravimetric or chemical analysis Method document (opens in a new tab) | Active (pump) | Headset & minisampler with 13mm MCE filter | 225-6200 225-6201 225-6202 225-8050 |
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)