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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The melting point is 73-75°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
74 °C

Additional information

The tested substance has a typical composition, the only impurity in PDTN is moisture. Inorganic impurities are not possible due to the manufacturing process. In one study the melting point is 75°C. In the second study, the melting temperature of PDTN was determined to be 73 - 74°C (346 - 347 K). Probably because of some impurities the melting process started at a lower temperature of about 59°C (332 K). At temperatures above about 231°C (504 K) reaction or decomposition of the test substance was observed.

The measured melting points slightly differ. This can be explained by difference in purity.

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