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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
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:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
equivalent or similar to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
-13.8 °C
Atm. press.:
ca. 1 013 hPa

The measurements in aluminium crucibles with a hole showed an endothermal effect in the temperature range of -35 -10 °C with onset temperatures of -14.0 °C and -13.7 °C, respectively. A second endothermal effect was observed in the temperature range of 250 - 320 °C.

Conclusions:
The test item has a melting point of -13.8°C
Executive summary:

The determination of the melting point was carried out according to OECD Test guideline 102 and the European Commission Council Regulation (EC) No. 440/2008, Annex, Part A, A.1 by differential scanning calorimetry (DSC).

The test item was cooled down from ambient temperature to - 50 °C with a cooling rate of 10 K/min. When - 50 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from - 50 °C to 200 °C and 400 °C, respectively, at a constant heating rate of 10 K/min. The measurements were performed in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Aluminium crucibles with

a small hole were used as containers for the test item and as empty reference crucible. The test item has a melting point of -13.8°C.

Description of key information

The determination of the melting point was carried out according to OECD Test guideline 102 and the European Commission Council Regulation (EC) No. 440/2008, Annex, Part A, A.1 by differential scanning calorimetry (DSC).

The test item was cooled down from ambient temperature to -50 °C with a cooling rate of 10 K/min. When - 50 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from - 50 °C to 200 °C and 400 °C, respectively, at a constant heating rate of 10 K/min.

The test item has a melting point of -13.8°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-13.8 °C

Additional information