Chromium chromate
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.
Biomedical References
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
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
Nephrotoxin
Yes
Dermatotoxin
Skin burns
IARC Carcinogen
Established
NTP Carcinogen
Human carcinogen
ACGIH Carcinogen
Confirmed Human
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: