Registration Dossier

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From September 11 to 22, 1997
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
The study was conducted according to OECD/EC guideline, and under GLP. The substance is considered to be adequately characterised with its purity. Therefore full validation applies.
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
according to guideline
EU Method A.1 (Melting / Freezing Temperature)
Principles of method if other than guideline:
Not applicable
GLP compliance:
(no certificate)
Type of method:
other: method described in French Standard NF T 20-051 was used
Key result
Melting / freezing pt.:
< -50 °C
Remarks on result:
other: No freezing point detected in the range of measurement (room temperature to minus 50 °C)

The lower limit of calibration of the collector is minus 50 °C. At this temperature, the test substance is still a liquid, without evidence of viscosity increasing or crystallization.

For information only, the cooling of the test substance has been performed in liquid nitrogen.

With a non -calibrated collector, we have seen crystallization between minus 100 and minus 130 °C.

No further testing required.
Executive summary:

The freezing point of the test substance was determined according to OECD 102/EU A1, test substance being a liquid at room temperature, the method described in French Standard NF T 20-051 was used.


No freezing point was detected in the range of measurement (room temperature to minus 50 °C).

Description of key information

Freezing point < -20 °C (< -50°C).
No further testing is required.

Key value for chemical safety assessment

Additional information

A fully reliable experimental study, conducted according to a recognized OECD/EU/NF method, is available. It is considered as a key study. As no crystallisation was observed down to -50°C, the result is expressed as a limit value, and cannot be retained as key data.