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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:
from 2021-01-26 to 2021-02-04
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:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
2.6 °C
Atm. press.:
>= 989 - <= 1 007 hPa
Decomposition:
no
Sublimation:
no

Results of the DSC-measurement

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

10.04

2.55

238.88

0 – 20 (endo)

200 – 250 (endo)

10.04

1007.0

11.26

2.71

236.04

0 – 20 (endo)

210 – 250 (endo)

11.26

988.9

During the heating phase a distinct endothermic effect was observed in the temperature range of 0 - 20 °C, which can be assigned to the melting of the test item.

As the onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 2.63 °C, this temperature can be used as melting point. The test item has a melting point of 2.6 °C.

Conclusions:
The test item has a melting point of 2.6 °C.
Executive summary:

An experimental study was conducted according to Regulation (EC) No 440/2008 Methods A.1. and OECD Test Guidelines 102 to determine the melting point of the test item using differential scanning calorimetry. The test item has a melting point of 2.6 °C.

Description of key information

The test item has a melting point of 2.6 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
2.6 °C

Additional information

An experimental study was conducted according to Regulation (EC) No 440/2008 Methods A.1. and OECD Test Guidelines 102 to determine the melting point of the test item using differential scanning calorimetry. The test item has a melting point of 2.6 °C.