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Chromium (III) Compounds (as Cr)

General Description

  • Synonyms: Chrome; Chromium Phosphate; Chromium Carbonate; Chromium Acetate
  • OSHA IMIS Code Number: C113
  • Chemical Abstracts Service (CAS) Registry Number: 7440-47-3
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GB4200000; 25915
  • Chemical Description and Physical Properties:
    • Appearance and odor vary depending on specific compound
    • molecular weight: 52.00
    • molecular formula: Cr

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 mg/m3 TWA

Health Factors

  • International Agency for Research on Cancer (IARC): Chromium and Chromium Compounds - Group 3, not classifiable as to its carcinogenicity to humans (Trivalent Chromium Compounds)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • See IMIS 0690, Chromium Sol. Chromic, Chromous Salts (as Cr)
  • See IMIS 0685, Chromium Metal and Insoluble Salts

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