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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
other: handbook data
Adequacy of study:
key study
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:
Not applicable - Handbook data.
GLP compliance:
not specified
Type of method:
other: No data
Melting / freezing pt.:
1 810 °C
Decomposition:
yes
Decomp. temp.:
1 810 °C
Remarks on result:
other: Handbook of refractory carbides and nitrides, 1996
Melting / freezing pt.:
1 810 °C
Remarks on result:
other: Kirk-Othmer Encyclopedia of Chemical Technology
Melting / freezing pt.:
ca. 1 900 °C
Decomposition:
yes
Decomp. temp.:
ca. 1 900 °C
Remarks on result:
other: Ullmann's Encyclopedia 2012
Melting / freezing pt.:
1 895 °C
Remarks on result:
other: CRC 2007
Melting / freezing pt.:
1 890 °C
Remarks on result:
other: D'Ans J., Lax E., 1998
Conclusions:
Decomposes at melting temperature 1810 °C.

Description of key information

Decomposes at melting temperature.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
1 810 °C

Additional information