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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:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: OECD Guidelines for Testing of Chemicals, Section 1 "Physical-Chemical Properties No: 113" Screening Test for Thermal Stability and Stability in Air
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not applicable
GLP compliance:
no
Type of method:
thermal analysis
Remarks:
Differential Thermal Analysis (DTA)
Melting / freezing pt.:
65 - 200 °C
Decomposition:
yes
Decomp. temp.:
375 - 450 °C
Remarks on result:
other: No pressure reported

Between approx. 245 °C and 370 °C an endothermic effect was visible. This appears to be the boiling range of the test item. Additionally a decomposition of the test item seems to take place. This assumption is supported by the light yellowish colour of the residue in the crucible.

Between 375 °C and 450 °C another endothermic effect could be observed. Within this phase the decomposition of the test item seems to proceed, based on the dark-orange colour of the residue in the crucible.

Conclusions:
A melting range between approx. 65 °C and 200 °C could be observed. No pressure is reported.
Executive summary:

A differential thermoanalysis method (DTA) was used to determine the melting point which conforms to the procedure Test method A.1, "Determination of the melting point", described in the EC-Guideline.A melting range of the test item between approx. 65 and 200 °C could be observed. After the boiling process a decomposition of the substance seems to take place. This is supported by the light yellowish colour of the residue in the crucible. Between 375 °C and 450 °C another endothermic effect could be observed.

Description of key information

The melting point of the substance is in the range between 65 and 200 °C and no pressure was reported.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
127.5 °C

Additional information

"Should be considered as mean value"