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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:
2000-06-14 to 21
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)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
47.9 °C
Atm. press.:
1 013.25 hPa
Decomposition:
no
Sublimation:
no

 

Preliminary test

The measurement in a closed glass pan shows an endothermic effect (melting) in the range 30-70 °C. No exothermal decomposition was observed up to 300 °C.

 

Main Test

Onset /°C

Temperature range / °C

Pan

48.2

24-66

aluminium with a hole

47.2

24-66

aluminium with a hole

48.2

25-60

aluminium with a hole

 

The mean melting point was determined to be 47.9 °C.

Conclusions:
The melting point was determined to be 47.9 °C at 1013.25 hPa.
Executive summary:

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible. Three tests with were performed. As reference crucible, an empty aluminium crucible was used. The temperature was increased at a constant heating rate. In the temperature range of 24-66 °C, a thermal effect was observed. The mean onset temperature of the three measurements was determined to be 47.9 °C. Thus, the melting point of the substance was determined to be 47.9 °C at 1013.25 hPa.

Description of key information

The melting point was determined to be 47.9 °C at 1013.25 hPa (reference 4.2 -1).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
47.9 °C

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 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. Three tests with were performed. As reference crucible, an empty aluminium crucible was used. The temperature was increased at a constant heating rate. In the temperature range of 24-66 °C, a thermal effect was observed. The mean onset temperature of the three measurements was determined to be 47.9 °C. Thus, the melting point of the substance was determined to be 47.9 °C at 1013.25 hPa.