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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:
from 31 January 2017 to 23 February 2017
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:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
61.6 °C
Decomposition:
yes
Decomp. temp.:
> 225 °C

DSC EXPERIMENT 1

An endothermic peak between 25°C and 75°C was observed. The extrapolated onset temperature of the peak was not be determined since it was observed within 2 minutes from the start of the experiment. From 225°C, an endothermic effect was observed. The effect was due to reaction and/or decomposition of the test item. After the experiment, an orange molten residue remained in the sample container.

DSC EXPERIMENT 2

The extrapolated onset temperature of the endothermic melting peak was determined to be 61.555°C. After the experiment, a white molten residue remained in the sample container.

DSC EXPERIMENT 3

Experiment 3 was performed to determine the duplicate melting temperature of the test item. Similar results as with Experiment 2 were obtained. The extrapolated onset of the melting peak was 61.551°C. After the experiment, a white molten residue remained in the sample container.

DATA HANDLING

The mean of Experiment 2 (61.555°C) and Experiment 3 (61.551°C) was reported as the melting point of the substance.

 

Conclusions:
The melting temperature of the substance was determined to be 61.6°C.


Executive summary:

Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200. From duplicate experiments the melting temperature of the substance was determined to be 61.6°C. Reaction and/or decomposition of the substance started above 225°C.

Description of key information

61.6°C (EC A.1, OECD 102, OPPTS 830.7200: DSC)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
61.6 °C

Additional information

Reaction and/or decomposition at > 225°C.