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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
Study period:
2011-03-01 to 2011-03-31
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Followed accepted guideline method and GLP requirements
Reference:
Composition 1
Qualifier:
equivalent or similar to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to
Guideline:
other: BS4633: Method for the Determination of Crystallizing Point
GLP compliance:
yes (incl. certificate)
Type of method:
method to determine freezing temperature
Test material information:
Composition 1
Melting / freezing pt.:
< -20 °C
Remarks on result:
other: Determination carried out in duplicate

Cooling data were obtained in two determinations of melting point/freezing point. In the first determination, temperatures were dropped from 18.4 degrees C to -21.0 degrees C over a period of 0 to 1560 seconds. Readings were taken every 30 seconds. The test article was observed to become slightly viscous during cooling. In the second determination, temperatures were changed from 19.2 degrees C to -21.0 degrees C over 0 to 1830 seconds. Test article was again seen to become slightly viscous during cooling. The interpretation of the results was than the freezing temperature of the test material was less than -20.0 degrees C (253 K).

Conclusions:
Melting/Freezing temperature less than -20 degrees C (253K) for the test article.
Executive summary:

A test conducted using BS4633: Method for the Determination of Crystallizing Point”, designed to be compatible with Method A1 Melting/Freezing Temperature” of Commission Regulation (EC) No. 440/2008 of 20 May 2008 yielded a value of less than –20.0 degrees C (253K) for the test article..

Description of key information

A test conducted using BS4633: Method for the Determination of Crystallizing Point”, designed to be compatible with Method A1 Melting/Freezing Temperature” of Commission Regulation (EC) No. 440/2008 of 20 May 2008 yielded a value of less than –20.0 degrees C (253K) for the test article.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-20 °C

Additional information