Agent Name

Chromium chromate

CAS Number

41261-95-4

Formula

Cr-H2-O4.x-Cr

Major Category

Metals

Synonyms

Chromium chromate (H2CrO4); Chromic acid (H2CrO4), chromium salt; [ChemIDplus] Chromic chromate; Chromic acid [H2CrO4], chromium(3+) salt (3:2); [IARC]

Category

Chromium Compounds, Inorganic

Description

Dark purple to black solid; Sparingly soluble in water; [HSDB]

Sources/Uses

Used in chromate coatings and as a corrosion inhibitor for zinc, cadmium, and magnesium; [HSDB]

Comments

See "Chromic acid." See "Chromium" and linked occupational diseases.

Exposure Assessment
BEI

For chromium (VI), water-soluble fume: Total Cr in urine = 10 ug/L (increase during shift) or 25 ug/L (end of shift at end of workweek)

Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.0002 mg/m3, as Cr(VI), inhalable particulate matter

STEL (ACGIH)

0.0005 mg/m3, as Cr(VI), inhalable particulate matter

PEL (OSHA)

0.005 mg/m3Ceiling(OSHA) = 0.1 mg/m3, as CrO3

IDLH (NIOSH)

15 mg/m3, as Cr(VI)

Adverse Effects
Skin Sensitizer

Yes

Asthma

Yes

Hepatotoxin

Hepatotoxin, Secondary

Nephrotoxin

Yes

Dermatotoxin

Skin Burns

IARC Carcinogen

Known Carcinogen

NTP Carcinogen

Human Carcinogen

ACGIH Carcinogen

Confirmed Human

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

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: