Agent Name

Emery

Alternative Name

Aluminum oxide

CAS Number

12415-34-8

Major Category

Mineral Dusts

Synonyms

Aluminum oxide; Aluminum trioxide; Corundum; Impure corundum; Natural aluminum oxide; [NIOSH]

Category

Other Mineral Dusts

Description

Odorless, white, crystalline powder; [Note:Emery is an impure variety of Al2O3 which may contain small impurities of iron, magnesium & silica. Corundum is natural Al2O3. See also CAS #1302-74-5 (corundum)]

Sources/Uses

Emery is an impure form of corundum (aluminum oxide). Emery is used in abrasive emery cloth, wheels, and belts. Fine emory is used in lens grinding and lapidary work. [ACGIH] Emery is an impure variety of Al2O3 which may contain small impurities of iron, magnesium, and silica. Corundum is natural Al2O3. [NIOSH]

Comments

Emery containing no asbestos and < 1% crystalline silica is not known to be toxic when "exposures are kept under reasonable control." [ACGIH]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

PEL (OSHA)

15 mg/m3(total dust), 5 mg/m3(respirable fraction)

MAK

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

Explanatory Notes

Documentation and TLV withdrawn; [ACGIH]

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: