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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experiment start and date - 27 May 2003; Study completion date - 09 July 2003.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis
Specific details on test material used for the study:
Identity: FAT 40812/A
Batch: WP 8/03
Appearance: Solid, dark red-brownish powder
Expiration date: 23 April 2010
Storage: At room temperature at about 20 °C
Melting / freezing pt.:
> 400 °C
Atm. press.:
1 atm

In a preliminary test, a not well defined endothermic heat effect was observed between about 50 °C and 200 °C followed by an exothermic reaction starting at about 250 °C. After the experiment, the sample had lost about 24 % of its mass and the sample was black-colored and carbonized, but not molten.


In the main test, no endothermic peak was observed from which the melting could be deduced. The sample had lost about 23 % of its mass and the sample was black colored and carbonized.

Conclusions:
The test substance does not melt under the conditions of the test.
Executive summary:

In a GLP-compliant study performed according to EC method A.1, the melting point of the test substance was determined. Thermal analysis was used for this purpose. Based on the findings of the study, no melting was observed below 400 °C, no endothermic peak was observed from which the melting could be deduced. The sample had lost about 23 % of its mass and the sample was black-colored and carbonized.

Description of key information

In a GLP-compliant study performed according to EC method A.1, the melting point of the test substance was determined. Thermal analysis was used for this purpose. Based on the findings of the study, no melting was observed up to 400 °C, no edothermic peak was observed from which the melting could be deduced. At the end of the experiment the sample had lost about 23 % of its mass and was black-colored and carbonized.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
400 °C

Additional information