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Physical & Chemical properties

Melting point / freezing point

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melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Test dates: July 24 to August 6, 2015
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is adequately characterised. Therefore full validation applies.
according to guideline
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
issued 05 March 2015
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Physical state: Colourless translucent liquid
- Storage condition: Room temperature protected from direct sun light.
Key result
Melting / freezing pt.:
-75 °C

Table 4.2/1: Melting point – results

Test No.

Start temperature

Heating rate

Onset temperature


-150 °C

+25 °C/min

-71.5 °C


-100 °C

+10 °C/min

-74.9 °C


-150 °C

+10 °C/min

-74.9 °C


-150 °C

+10 °C/min

-75.3 °C

Mean ± S.D

-75.0 ± 0.2 °C

Four successive tests were performed. (*)The last three ones were retained. The validity criteria for repeatability were fulfilled: the standard deviation within the three replicate assessments did not exceed 0.5 °C. Therefore the average value is retained as final result.

Mean onset for melting occurred at -75.0 °C ± 0.2 °C (from assays 2, 3 and 4).

Executive summary:

The melting point of the test substance was determined under GLP according to EU A1 guideline, using differential scanning calorimetry (DSC) method.

The mean of three consistent determinations was retained.

The melting temperature of test substance was determined to be -75.0 ± 0.2°C.

Description of key information

Experimental melting point (i.e. transition from solid to liquid) = -75.0°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-75 °C

Additional information

A fully reliable experimental study, conducted according to a recognized EC method and under GLP, is available.

It is considered as a key study, and the result is retained as key data.