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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
yes (incl. QA statement)
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
< 253 K
Atm. press.:
ca. 1 013 hPa
Remarks on result:
other: no freezing point detectable

An aliquot of test material was placed into a test tube containing a thermometer. A wire loop with which the sample could be agitated was placed inside the tube to ensure sample homogeneity during cooling. The test tube was surrounded by a glass jacket and then placed into a large beaker containing a dry ice/acetone mixture. The temperature and observation of the test material were recorded approximately every 30 seconds.


The dry/ice acetone bath was maintained until the temperature had reached approximately -20°C. The determination was carried out in duplicate. Graphs of temperature versus time (seconds) were constructed to obtain the freezing temperature.

No freezing temperature could be detected in the range down to -20°C (253 K)

Description of key information

No freezing point could be detected down to -20°C (253 K).

Key value for chemical safety assessment

Additional information

Three measurements with the test tube method down to -20°C showed no freezing point.