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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting point / freezing point

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Administrative data

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
no data
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Reference Type:
review article or handbook
CRC Handbook of Chemistry and Physics. A Ready-Reference Book of Chemical and Physical Data
Lide, D.R.
Bibliographic source:
CRC Press

Materials and methods

Principles of method if other than guideline:
Data in this peer-reviewed publication were taken from many sources, including both compilations and primary literature. Where conflicts were found, the value deemed most reliable was chosen for inclusion in the handbook. Reference sources were not provided for this parameter, nor were the experimental methods.

Test material

Constituent 1
Chemical structure
Reference substance name:
Zirconium diboride
EC Number:
EC Name:
Zirconium diboride
Cas Number:
Molecular formula:
zirconium diboride
Test material form:
solid: particulate/powder
Details on test material:
no information reported apart from name and CAS number

Results and discussion

Melting / freezing point
Melting / freezing pt.:
3 245 °C

Applicant's summary and conclusion

The melting point under the study conditions was reported to be 3245 degrees C.