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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:
23.11.2012 - 01.02.2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
(EC) No.440/2008
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 298 - < 300 °C
Atm. press.:
1 013.3 hPa
Decomposition:
no
Sublimation:
no

The measurements in aluminium crucibles with a hole showed an endothermal effect (melting) in the temperature range of 45 -65°C with onset temperatures between 54.46 °C and 54.32 °C.

 

 

Onset / °C

Temperature range / °C

Crucible

54.46

40 -65

Aluminium with a hole

54.32

45 - 65

Aluminium with a hole

 55.02 40 -65 

  Aluminium with a hole

 54.90

 40 -65 

 Aluminium with a hole

 54.36

 40 -65 

  Aluminium with a hole

 

From the results of the DSC measurements it was concluded that the test item had a melting point of 54.6 °C.

Conclusions:
The melting point of the test item was determined to be 54.6 °C.
Executive summary:

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 9 -15 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. In a defined atmosphere (nitrogen) the test item is heated up from ambient temperature to the final temperature (150 and 500 °C, respectively) at a constant heating rate (10 K/min). The quantity of heat absorbed or released is measured and recorded. From the results of the DSC measurements it was concluded that the test item had a melting point of 54.6 °C.

Description of key information

The meltingpoint of the test item was determined to be 54.6 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
54.6 °C

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry (reference 4.2 -1). The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 9 - 15 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. In a defined atmosphere (nitrogen) the test item is heated up from ambient temperature to the final temperature (150 and 500 °C, respectively) at a constant heating rate (10 K/min). The quantity of heat absorbed or released is measured and recorded. From the results of the DSC measurements it was concluded that the test item had a melting point of 54.6 °C.