Chromium and inorganic compounds: Hexavalent chromium compounds, as Cr(VI), Total, Insoluble

CAS Number


Last Revised


TWA Limit

0.01 mg/m3



Ceiling Limit


Notes & Notations
  • ACGIH A1 - Confirmed human carcinogen (cancer causing)
  • ACGIH DSEN - Dermal sensitizer
  • ACGIH RSEN - Respiratory sensitizer
  • IARC 1 - Carcinogenic to humans (cancer causing)
  • IARC 2A - Probably carcinogenic (cancer causing) to humans
  • OHSR 5.57 is applicable for this designated substance
Basis of B.C. Exposure Limit
Minimize the potential for:
  • Asthma
  • Lung and sinonasal cancer
  • Respiratory tract irritation
  • Note: There may be other potential health effects; refer to ACGIH TLV Documentation and other relevant references.


If the substance you are searching has an entry that contains a size-selective fraction, form, or work activity, you should perform an additional search to confirm if other exposure limits may apply.

Ensure no workers are exposed to a substance that exceeds the exposure limits in accordance with OHSR 5.48.