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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Description of key information

Determination of the melting point.

Key value for chemical safety assessment

Additional information

The determination was carried out by differential scanning calorimetry, using a procedure designed to be compatible with Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Instrument:                Mettler Toledo DSC822e Differential Scanning Calorimeter (DSC) incorporating ThermoHaake Cooler EK45/MT.

Sample crucibles:        Aluminum crucibles with lids.

Reference crucibles:    Empty crucible with lid.

Test conditions:          The test was performed in an air atmosphere.


As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated.


The small endotherm at approximately 120 to 140°C was considered to be most likely due to volatilization of the entrained water impurity.



The test item has been determined to decompose from approximately 189 °C (462 K). As the test item decomposed, no value for melting temperature could be determined.