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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 2020-02-10 to 2020-02-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
31 May 2008
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
-23.5 °C
Decomposition:
no
Sublimation:
no

The evaluation of the data was performed using the software STARe. As result, a thermogram was obtained in which the heat flow of the investigated sample is given as a function of the temperature. By integrating the area under the heat flow signals, the enthalpy of the process was obtained. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K).

Conclusions:
The test item has a mean freezing point of - 23.5 °C.
Executive summary:

A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item cooled down from room temperature to - 40 °C. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K). This value is the mean of two measurements.

Description of key information

The test item has a mean freezing point of - 23.5 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-23.5 °C

Additional information

A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item cooled down from room temperature to - 40 °C. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K). This value is the mean of two measurements.

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