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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 April 11, 2006 to June 27, 2006
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
Key result
Atm. press.:
1 013.3 hPa
Decomposition:
yes
Decomp. temp.:
170 °C
Remarks on result:
not determinable

The differential scanning calorimetry (DSC) measurements in closed glass crucibles showed no endothermic effect until the decomposition of the test substance beginning at 170°C. The test substance has no melting point at atmospheric pressure.

Conclusions:
Under the conditions of the study, the DSC-measurements in closed glass crucibles showed no endothermic effect until the decomposition of the test substance beginning at 170°C. The test substance has no melting point at atmospheric pressure.
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: Mettler-Toledo TA8000).

Under the conditions of the study, the DSC-measurements in closed glass crucibles showed no endothermic effect until the decomposition of the test substance beginning at 170°C. The test substance has no melting point at atmospheric pressure.

Description of key information

The test substance has no melting point at atmospheric pressure (Smeykal, 2006).

Key value for chemical safety assessment

Additional information