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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The freezing point of TCPP substance is <-20°C, using the Method for Determination of Crystallizing Point (EU-A.1).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-20 °C

Additional information

Should be read as < -20 °C

The freezing point of TCPP was determined in according to EU Method A.1 (Melting / Freezing Temperature).

An aliquot of TCPP was placed into a test tube containing a thermometer. A wire loop with which the sample could be agitated was placed inside the tube to ensure sample homogeneity during cooling. The test tube was surrounded by a glass jacket and then placed into a large beaker containing a dry ice/acetone mixture. The temperature and observations of the test material were recorded approx. every 30 seconds. The dry ice/acetone bath was maintained until the temperature had reached approx. -20°C.