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Melting point / freezing point

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melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: according to company guideline and standard operating procedure
Principles of method if other than guideline:
Differential Scanning Calorimetry
GLP compliance:
not required for phys.-chem. data
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
> 400 °C
Decomp. temp.:
> 400 °C
Remarks on result:
other: no melting before decomposition observed up to 400°C

neither melting nor decomposition was observed up to 400°C (see attached curves).

Description of key information

2 measurements are available.

The first measurement was performed in October 2003 for the purpose of new substance registration according to Directive 67/548/EEC. No endothermal process (melting) could be observed in the differential scanning calometry and an exothermal event was observed at about 180°C which had been attributed to a decomposition reaction.

The second measurement, representing the actual manufactured material, was performed in January 2020. This result is regarded as more reliable since recently manufactured testmaterial was measured using a state of the art and software controlled device and applying a reduced heating rate (3 K/min instead of 5 or 10 K/min).

Hence, this study is judged as the key study.

Key value for chemical safety assessment

Additional information