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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Basic observations of the substance and attempts to dry first to hydrated solid and then to dry to form anhydrous material.
no guideline followed
Principles of method if other than guideline:
Basic observations of the material and attempts to remove water
GLP compliance:
Specific details on test material used for the study:
Batch number of test material: D-02-4057
Nominal 64% purity as hydrate in water
Physical state at 20°C and 1013 hPa:
Key result
solid: particulate/powder
Clear crystals
Substance type:
Considered to decompose at high temperatures (above 100 °C), to form zirconia (ZrO2).
Attempts to remove water at lower temperatures and partial vacuum also appears to lead to formation of oxides that fail to re-dissolve in water
Executive summary:

The substance is produced as a liquid and further dried for analysis purpose to form a hydrated solid. Further heating resulted in formation of white solid that failed to re-dissolve in water, suggesting at least partial oxidation to ZrO2.

Dryring under partial vacuum using less elevated temperatures still results in at least partial oxidation.

Description of key information

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

Additional information

Although will dry to a solid, the substance is manufactured and supplied in water and for the purposes of the SDS, this is considered liquid.

Although possible to generate solid, this is a hydrated material still containing water. If heating or using other methods such as vacuum to remove water, there is evidence of oxidation.

The solid is low dust and is hygroscopic.