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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:
July 09, 2018 - July 10, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
European Commission Regulation (EC) No. 440/2008
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
>= 132 - <= 136 °C

Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 120 - 150 °C. The onset temperature (see Table 1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline.

 

Melting point (DSC measurements)

Ident No.

Test item/ mg

Starting temperature / °C

Final test temperature / °C

Temperature range (melting) /°C

Onset / °C

Crucible

Observations after the measurement

38084

6.35

25

500

120 - 150

132.3

Aluminium with a hole

Test item discoloured to black, mass loss: 33%

38086

6.47

25

180

120 - 150

135.2

Aluminium with a hole

Test item was a yellow melt, no mass loss

 

The test item had a melting range of 132 - 136 °C.

Conclusions:
The test item had a melting range of 132 - 136 °C.
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 (DSC 25-500 °C). 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. The test item had a meltingThe DSC measurements (25 - 500 °C) showed that the test item had a melting range of 132 - 136 °C under atmospheric conditions.

Description of key information

The test item had a melting point of 132 - 136 °C under atmospheric conditions.

Key value for chemical safety assessment

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting rangewas determined by differential scanning calorimetry (DSC 25 - 500°C). 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. The test item had a melting point of 132 - 136 °C under atmospheric conditions.