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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:
October 18, 2019
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:
European Commission Regulation (EC) No. 440/2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 222.3 °C
Atm. press.:
ca. 1 013.25 hPa
Decomposition:
no

Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect in the

temperature range of 215 - 235 °C.

 

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

38878

6.89

25

500

215-235

 

222.18

 

Aluminium with a hole

The test item was a white melt. Mass loss 4%

38879

9.25

25

500

215-235

222.47

Aluminium with a hole

The test item was a white melt. Mass loss 3%

 

The test item had a melting point of 222.3°C.

Conclusions:
The DSC measurements (25 - 500 °C) showed that the test item had a melting point of 222.3 °C.
Executive summary:

A study was conducted according to OECD test guideline 102, Regulation (EC) No. 440/2008 method A.1. The melting point / 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 melting point of 222.3 °C under atmospheric conditions.

Description of key information

The test item had a melting point/range of 222.3 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
222.3 °C

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting point / 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 melting point of 222.3 °C under atmospheric conditions.