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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:
Aug 12 - Dec 01, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
yes (incl. QA statement)
Remarks:
The Department of Health of the Goverment of the United Kingdom
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
>= 25 - <= 50 °C
Atm. press.:
ca. 1 013 hPa

Thermographic Data

Thermal Event

Interpretation

Temperature

Determination 1

Determination 2

ºC

K

ºC

K

Sharp endotherm

Melting onset

42.71

315.9

43.66

316.8

Sharp endotherm

Melting completion

56.01

329.2

57.11

330.3

Thermal Event

Interpretation

Temperature

Determination 3

Determination 4

ºC

K

ºC

K

Sharp endotherm 1

Melting onset

27.15

300.3

26.56

299.7

Sharp endotherm 1

Melting completion

33.99

307.1

33.57

306.7

Sharp endotherm 2

Melting onset

38.26

311.4

38.42

311.6

Sharp endotherm 2

Melting completion

50.34

323.5

51.39

324.5

After investigation by metal block analysis melt onset seen at approximately 30 °C, therefore the melting range is to be given from approximately 25 °C to 50 °C (298 to 323 K).

Conclusion:

The melting point range of the test item has been determined to be approximately 25 to 50 °C (298 to 323 K).

Description of key information

25 to 50 °C (298 to 323 K), by differential scanning calorimetry (Method A.1/OECD 102)

Key value for chemical safety assessment

Additional information

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