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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Zirconium oxide, hafnium and ytterbium doped is a non-combustible, white powdery inorganic solid. The substance shows no self-ignition at a temperature of 400 °C and the melting point is approximately 2.700 °C. The relative density is 6.14 g/cm³ at 20 °C. The substance is considered highly insoluble in water. The transformation / dissolution (T/D) test with Zirconium oxide, hafnium and ytterbium doped at pH 8 reveals that only ytterbium is released to the aqueous environment. An average metal release of 0.07 µg/L was measured after 7 days T/D protocol at pH 8. The mean diameter of the Zirconium oxide, hafnium and ytterbium doped particles (D50 value) is 72.56 µm.

Additional information