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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:
2018-06-15 to 2018-07-03
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Remarks on result:
other: no discrete melting point could be determined with the method used or it is below -80 °C

Results

The rough optical approximation of the melting range resulted in the following observations: the sample aliquot was viscous at approx. -20 °C and spreadable at approx. -80 °C. Especially due to the sample's nature consisting of several ingredients, it may therefore be supposed that the sample rather offers a melting point but a melting range. This assumption coincides with the observations made within the DSC analysis.

In DSC analysis, the melting point mostly can be calculated from the onset or the peak maximum, whereby impure samples are usually characterised by their peak maximum. However, for the test item no peak could be observed in the DSC graph. Hence, no discrete melting point could be determined with the method used or it is below -80 °C.

Conclusions:
No discrete melting point of the test item could be determined with the method used or it is below - 80 °C.
Executive summary:

The melting point of the test item was determined by DSC measurement according to OECD 102. The rough optical approximation of the melting range resulted in the following observations: the sample aliquot was viscous at approx. -20 °C and spreadable at approx. -80 °C. Especially due to the sample's nature consisting of several ingredients, it may therefore be supposed that the sample rather offers a melting point but a melting range. This assumption coincides with the observations made within the DSC analysis.

In DSC analysis, the melting point mostly can be calculated from the onset or the peak maximum, whereby impure samples are usually characterised by their peak maximum. However, for the test item no peak could be observed in the DSC graph. Hence, no discrete melting point could be determined with the method used or it is below -80 °C.

Description of key information

No discrete melting point of the test item could be determined with the method used or it is below - 80 °C.

Key value for chemical safety assessment

Additional information