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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:
not specified
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
The analysis was performed using Differential Scanning Calorimetry (DSC). The sample was sealed in a preweighed aluminum hermetic T-zero pan and the sample weight was recorded. The sample was loaded into the DSC and cooled under a nitrogen purge to -70°C. The sample was then heated at 20°C/min to 100°C. A broad melting endotherm was recorded and reported.
GLP compliance:
not specified
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
ca. 20 - ca. 39 °C
Atm. press.:
ca. 1 atm
Remarks on result:
other: A broad melting endotherm was observed starting at -55°C and continuing to 60°C. Two melting peaks were observed at 20°C and 39°C.

For graphical representation of temperature changes, refer to the graph under illustration section of the IUCLID.

Conclusions:
Under the study conditions, the melting point range of the test substance was determined to be 20 to 39°C.
Executive summary:

A study was conducted to determine the melting point of the test substance using Differential Scanning Calorimetry (DSC) method. The sample was sealed in a preweighed aluminum hermetic T-zero pan and the sample weight was recorded. The sample was loaded into the DSC and cooled under a nitrogen purge to -70°C. The sample was then heated at 20°C/min to 100°C. A broad melting endotherm was observed starting at -55°C and continuing to 60°C; whereas two melting peaks were observed at 20°C and 39°C. Under the study conditions, the melting point range of the test substance was determined to be 20 to 39°C (ADM, 2019).

Description of key information

The melting point of the test substance was determined using the differential scanning calorimetry (DSC) method (ADM, 2019).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
20 °C

Additional information

Melting point range: 20 to 39°C.

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