Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 950-052-1 | CAS number: -
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 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.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Basic observations of the material and attempts to remove water
- GLP compliance:
- no
- 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:
- solid
- Key result
- Form:
- solid: particulate/powder
- Remarks:
- Hygroscopic
- Colour:
- Clear crystals
- Substance type:
- inorganic
- Conclusions:
- 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.
Reference
Description of key information
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
