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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:
24 October 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Related information:
Composition 1
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Qualifier:
according to
Guideline:
other: CIPAC MT 1 (2009): Freezing Point
GLP compliance:
no
Type of method:
differential scanning calorimetry
Test material information:
Composition 1
Key result
Melting / freezing pt.:
52 °C
Atm. press.:
1 001 hPa
Decomposition:
no

Results

In the temperature range of 50 - 70 °C an endothermic effect (melting), was observed. Between approx. 160 - 270 °C a second endothermic effect (boiling) could be detected.

 

Results of the DSC-measurements

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

PN12079

15.78

52.32

243.00

50 - 70 (endo)

170 - 270 (endo)

15.72

1001.1

PN12080

16.77

51.65

242.70

50 - 70 (endo)

160 - 260 (endo)

16.77

1001.1

 

During the heating phase an endothermic effect was observed in the temperature range of 50 - 70 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests deviate less than 0.5 K from their mean value of 51.99 °C, the test item has a melting point of 52.0 °C.

The test item showed a second endothermic signal in the temperature range of approx. 160 – 270 °C that can be assigned to the boiling of the test item. No further thermal effects were observed up to the maximum test temperature of 500 °C.

 

Final Results

The test item has a melting point of 52.0 °C at atmospheric pressure (1001 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Conclusions:
A melting point value of 52 °C (at 1001 hPa) was determined for the test substance according to E.U. Method A.1.

Description of key information

Melting point: 52.0 °C at 1001.0 hPa (EU Method A.1, differential scanning calorimetry)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
52 °C

Additional information