Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Copper dichromium tetraoxide is an unclassified inorganic compound with very low water solubility at environmentally relevant concentrations.  As a worst-case scenario, it is assumed for risk assessment and classification purposes that the substance will slowly dissociate in aqueous media, and give rise to cupric copper ions (Cu2+) and chromium ions (Cr3+) in the environment that will then be subject to further transformation.

In view of this fact, please refer to the separate Chemical Safety Reports (CSR) of copper oxide (CuO) and chromium (III) oxide (Cr2O3) for detailed assessments of the following properties:

•       Degradation (Section 4.1).

•       Environmental distribution (Section 4.2).

•       Bioaccumulation (Section 4.3).

•       Secondary poisoning (Section 4.4).

These documents are attached in their entirety to Section 13 (Assessment Reports) of the copper dichromium tetraoxide IUCLID dossier.