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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

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water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
according to guideline
OECD Guideline 105 (Water Solubility)
GLP compliance:
not specified
Type of method:
flask method
Key result
Water solubility:
< 0 g/L
20 °C
Remarks on result:
other: dissolved Er
Key result
Water solubility:
< 0 g/L
20 °C
Remarks on result:
other: dissolved Zr
Details on results:
The determination coefficient (r2) of Zr and Er were both 1.00
The substance is insoluble (< 0.1 mg/L).The water solubility of both Zr and Er present in the erbium zirconium oxide sample at 20°C was determined to be < 0.00001 g/L. The substance can therefore be considered as insoluble.

Description of key information

The key study concluded that erbium zirconium oxide is insoluble in water. The water solubility of both erbium and zirconium from the sample were determined to be < 0.01 mg/L.

Key value for chemical safety assessment

Additional information

The study from Manabe (2013), performed with the substance erbium zirconium oxide according to OECD guideline 105, reported a water solubility of < 0.01 mg/L at 20°C for both zirconium and erbium. The substance erbium zirconium oxide can therefore be concluded to be insoluble.