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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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:
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.