Agent Name

Magnesium oxide

CAS Number

1309-48-4

Formula

Mg-O

Major Category

Other Classes

Synonyms

Magnesia; Calcined brucite; Calcined magnesia; Calcined magnesite; Oxyde de magnium; Periclase; [CHEMINFO]

Category

Salts, Basic

Description

Finely divided white particulate dispersed in air; Note: Exposure may occur when magnesium is burned, thermally cut, or welded upon; [NIOSH]

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]

Comments

Fumes of zinc, copper, and magnesium can cause metal fume fever. [LaDou, p. 376] A skin and eye irritant; May be harmful if swallowed or inhaled; [Sigma-Aldrich MSDS]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

10 mg/m3, inhalable fraction

PEL (OSHA)

15 mg/m3, total particulate (fume)

MAK

4 mg/m3(inhalable fraction), 1.5 mg/m3(respirable fraction)

IDLH (NIOSH)

750 mg/m3

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].

Adverse Effects
ACGIH Carcinogen

Not Classifiable

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Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: