| Agent Name |
Magnesium oxide |
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| CAS Number |
1309-48-4 |
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| Formula |
Mg-O |
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| Major Category |
Other Classes |
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| Synonyms |
Magnesia; Calcined brucite; Calcined magnesia; Calcined magnesite; Oxyde de magn�sium; Periclase; [CHEMINFO] |
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| Category |
Salts, Basic |
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| Description |
Finely divided white particulate dispersed in air; Note: Exposure may occur when magnesium is burned, thermally cut, or welded upon; [NIOSH] |
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| Sources/Uses |
Used in medications, animal feeds, fertilizers, insulation, wallboard, electrical heating rods, crucibles, fire bricks, petroleum additives, boiler scale control agents, and food additives; [HSDB] |
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| Comments |
Fumes of zinc, copper, and magnesium can cause metal fume fever. [LaDou, p. 323] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| TLV (ACGIH) |
10 mg/m3, inhalable fraction |
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| PEL (OSHA) |
15 mg/m3, total particulate |
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| MAK |
4 mg/m3(inhalable fraction), 1.5 mg/m3(respirable fraction) |
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| IDLH (NIOSH) |
750 mg/m3 |
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| Excerpts from Documentation for IDLHs |
Volunteers exposed to freshly generated fume at concentrations ranging from 410 to 580 mg/m3 experienced only slight (unspecified) reactions [Drinker et al. 1927]. |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: MAGNESIUM OXIDE
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