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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19.-28.07.2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
European Commission Regulation (EC) No. 440/2008,
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
ca. 67.2 °C
Atm. press.:
ca. 1 013.25 hPa
Decomposition:
no
Executive summary:

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting range was determined by differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. A measurement with the capillary method was performed to clarify the results of the DSC measurements.


The test item showed an endothermal effect in the temperature range of 55 - 80 °C.  An additional measurement with the capillary method was performed in order to clarify the melting range. Under consideration of the results from the DSC measurements and the capillary method it was concluded that the test item melted within a range of 67.2 °C.

Description of key information

The test item had a melting point/range of  67.2°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
67.2 °C

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting range was determined by differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. A measurement with the capillary method was performed to clarify the results of the DSC measurements.


The test item showed  endothermal effects in the temperature range of 55 - 80 °C.  An additional measurement with the capillary method was performed in order to clarify the melting range. Under consideration of the results from the DSC measurements and the capillary method it was concluded that the test item had a melting point of 67.2 °C