Agent Name

Chromite ore processing

Major Category

Metals

Category

Chromium Compounds, Inorganic

Description

"Chromite is the only mineral ore of chromium and consists of the oxides of chromium and of iron (Cr2O3FeO)." [Harber, p. 354]

Comments

Exposures to chromium metal, Cr(III), and Cr(VI) compounds may occur. When Cr(VI) is the main concern with mixed exposures, use TLV, DSEN, RSEN, and A1 cancer designations. "For processes where exposure measurements show no detectable expsoure to Cr(VI), the use of the TLV for Cr(III) is recommended." [ACGIH] A pneumoconiosis associated with chromite exposure was found in a study of South African miners. [Hendrick, p. 175] See "Chromium."

Exposure Assessment
Bioaccumulates

Yes

Explanatory Notes

TLV withdrawn in 2018; For TLVs, see hexavalent and trivalent chromium compounds. [ACGIH]

Adverse Effects
Fibrogenic

Yes

ACGIH Carcinogen

Confirmed Human

Links to Other NLM Databases
Toxicity Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: