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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Carcinogenicity

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Administrative data

Description of key information

Long term in vivo studies with chromium metal and chromium(III) oxide do not show any evidence that chromium would be a potential carcinogen. Human exposure observations and international carcinogenicity evaluations also conclude that trivalent chromium compounds are not classifiable for carcinogenicity.

Key value for chemical safety assessment

Justification for classification or non-classification

No classification is suggested for trichromium dicarbide.

According to available data on in vivo studies with chromium metal and chromium(III) oxide, as well as human exposure data, there are no indications that chromium metal / trivalent chromium would be a carcinogen. Several extensive evaluations also conclude that chromium(III) compounds are not classifiable as carcinogens. Based on this, it can be concluded that there are no data indicating any carcinogenic potential of trichromium dicarbide.

Additional information

The available data on the carcinogenicity of insoluble chromium do not show any clear carcinogenic effects. Trivalent chromium has been evaluated for carcinogenicity by IARC, WHO, ACGIH and US EPA, and none of these evaluations have found any evidence for chromium metal or Cr(III) being a potential carcinogen.