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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:
From September 22, 2004 to September 30, 2004
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis
Key result
Decomposition:
yes
Decomp. temp.:
>= 155 - <= 325 °C

The differential scanning calorimetry (DSC) measurements in closed glass crucibles showed no endothermic effect prior to the exothermal decomposition. The test substance has no melting point. The test substance decomposes first.

 

Conclusions:
Under the conditions of the study, the DSC measurements in closed glass crucibles showed no endothermic effect prior to the exothermal decomposition. The test substance has no melting point. The test substance decomposes first.
Executive summary:

A study was conducted to determine the melting point of the test substance according to OECD Guideline 102 and EU Method A.1, in compliance with GLP.

The test was carried out with the purified test substance. The determination of the melting point/melting range was carried out by differential scanning calorimetry (DSC).

 

Under the conditions of the study, the DSC measurements in closed glass crucibles showed no endothermic effect prior to the exothermal decomposition. The test substance has no melting point. The test substance decomposes first.

Description of key information

The test substance has no melting point as it decomposes before melting (Franke, 2004).

Key value for chemical safety assessment

Additional information