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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

Yttrium oxide is at normal pressure and temperature an inorganic white odourless solid powder with a relative density of 4.85 at 20.3°C.

Its melting and boiling point is > 400°C.

It has a very low water solubility (0.7 mg/l). Furthermore, it is neither flammable (up to 400°C) nor auto-flammable, nor explosive or oxidising.