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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The melting point of Ditantalum pentaoxide was reported to be 1875 ºC according to the CRC Handbook of Chemistry and Physics 92nd Edition (2011 -2012).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
1 875 °C

Additional information

The melting point of Ditantalum pentaoxide was reported to be 1875 ºC according to the CRC Handbook of Chemistry and Physics 92nd Edition (2011 -2012). The handbook has been assigned a reliability score of 2 using the principles for assessing data quality as set out in Klimisch (1997).

Three additional handbooks have been used as supporting studies for this endpoint. Kirk (1997), Lide (2010) and Clayton (1981) have recorded the melting point of Ditantalum pentaoxide in peer reviewed handbook and the data has been cited as found in the literature. The values provide sufficient consistency to act as supporting studies.