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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Chromium trioxide is a non-flammable, dark red solid which exists in the form of deliquescent crystals, flakes or powder. The substance has a melting point of approximately 196 °C and decomposes at 250 °C to produce Cr2O3 and O2. It has a relative density of approximately 2.7 g/cm³ and is very soluble in water. The substance is not explosive, but is a strong oxidiser.