Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Toxicity testing of chromium (II) oxide cannot be performed as the substance is unstable and classified as pyrophoric. As chromium (II) oxide will be completely converted into the most stable stage of chromium (III), it may be more appropriate to consider possible effects of chromium (III) compounds with regard to the environment. Therefore as an example, studies on the toxicity of chromium (III) acetate as analogue substance were reported, showing no toxicity potential for the aquatic compartment.