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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:
24.04.2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
86.9 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no

Three DSC-measurements in aluminium crucibles with a hole showed an endothermic effect in the temperature range of 80 - 100 °C with an onset temperature of 86.81 °C, 87.03 and 86.86 °C, respectively. The onset temperatures are derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline. The maximum test temperature was 200 °C and the test item appeared as solidified melt after the tests. No mass loss occurred in the measurement up to 200°C. Due to the results of the DSC-measurements it was concluded that the test item has a melting point of 86.9 °C.

Conclusions:
The melting point of the substance was determined to be 86.9 °C at 1013.25 hPa.
Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen).

Three DSC-measurements in aluminium crucibles with a hole showed an endothermic effect in the temperature range of 80 - 100 °C with an onset temperature of 86.81 °C, 87.03 and 86.86 °C, respectively. The onset temperatures are derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline. The maximum test temperature was 200 °C and the test item appeared as solidified melt after the tests. No mass loss occurred in the measurement up to 200°C. Thus, the melting point of the test item was determined to be 86.9 °C at 1013.25 hPa.

Description of key information

The melting point of the test item was determined to be 86.9 °C at 1013.25 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
86.9 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen).

Three DSC-measurements in aluminium crucibles with a hole showed an endothermic effect in the temperature range of 80 - 100 °C with an onset temperature of 86.81 °C, 87.03 and 86.86 °C, respectively. The onset temperatures are derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline. The maximum test temperature was 200 °C and the test item appeared as solidified melt after the tests. No mass loss occurred in the measurement up to 200°C. Thus, the melting point of the test item was determined to be 86.9 °C at 1013.25 hPa.