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Melting point / freezing point

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Description of key information

The melting point of the test material was determined to be above 300 degree C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
300 °C

Additional information

The determination of the melting point / melting range of the test item was performed according to the EEC Directive 92/69, A.1 "Melting/Freezing temperature", December 1992 and to the OECD Guideline No. 102: "Melting point / melting range", adopted July 27, 1995.

In order to determine the endothermic reaction more precisely, two further DSC-runs were recorded as main tests with 15.32 mg and 13.29 mg of test item, respectively, between 40 °C and 300 °C with a heating rate of 10 °C/min. In both main test runs, the endothermic reaction was observed between about 81 °C and 210 °C. The endothermic heat effect was not due to melting, as the test item was still a black powder after the test. However, further evaluation is beyond of the scope of the study. During these runs, the sample lost about 11 % and 10 % of its mass, respectively.

In conclusion, FAT 40825/A does not melt under the conditions of the test. The melting point of the test material was determined to be above 300 degree C.