Registration Dossier
Registration Dossier
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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: 947-747-7 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- other: Data from a peer reviewed handbook.
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Handbook data does not specify the method. Data from peer reviewed source.
- GLP compliance:
- no
- Type of method:
- other: Not specified.
- Melting / freezing pt.:
- 2 344 °C
- Conclusions:
- The melting point of the test material was reported as 2344 °C.
- Executive summary:
The melting point of the test material was reported as 2344 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- other: Data from a peer reviewed handbook.
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Handbook data does not specify the method. Data from peer reviewed source.
- GLP compliance:
- no
- Type of method:
- other: Not specified
- Melting / freezing pt.:
- 2 439 °C
- Conclusions:
- The melting point of the test material was reported as 2439 °C.
- Executive summary:
The melting point of the test material was reported as 2439 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- other: Data from a peer reviewed handbook.
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Handbook data does not specify the method. Data from peer reviewed source.
- GLP compliance:
- no
- Type of method:
- other: Not specified
- Melting / freezing pt.:
- 2 710 °C
- Conclusions:
- The melting point of the test material was reported as 2710 °C.
- Executive summary:
The melting point of the test material was reported as 2710 °C.
Referenceopen allclose all
Description of key information
According to peer reviewed handbook data, the melting point of zirconium oxide is 2710 °C.
According to peer reviewed handbook data, the melting point of yttrium oxide is 2439 °C.
According to peer reviewed handbook data, the melting point of erbium oxide is 2344 °C.
Key value for chemical safety assessment
Additional information
The melting points of the constituent oxides were considered together as part of a weight of evidence approach. This was used to inform on the likely melting point of the registered substance.
Following the weight of evidence approach the melting point of the registered substance is considered to be greater than 2000°C
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.
