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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:
2005-03-27 to 2007-07-05
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Certificate from the Swiss GLP Monitoring Authority
Type of method:
thermal analysis
Remarks:
thermocouples
Specific details on test material used for the study:
- Identity: TIC876 (T002675)
- Batch: 603T-1
- Purity: 97.76%
- Expiration date: December 19, 2007
- Storage: at room temperature (about 20°C)
Melting / freezing pt.:
-24 °C
Atm. press.:
99.4 kPa
Remarks on result:
other: +/-1; Test conducted at ambient atmospheric pressure.
Melting / freezing pt.:
249.2 K
Atm. press.:
99.1 kPa
Remarks on result:
other: +/- 1; Test conducted at ambient atmospheric pressure.

At –23 °C (1st test) and –25 °C (2nd test), respectively, the test item became turbid and started freezing by visual judgement. In conclusion, the freezing point was determined to be -24 °C ± 1.0 deg C which is equal to 249.2 K ± 1.0 K.

Conclusions:
The freezing point of the test substance was found to be -24 ± 1°C, or 249.2 ± 1 K.

Description of key information

A K1 GLP study was performed according to the OECD guideline 102 and EU Method A.1. The freezing point of the test substance was found to be -24 ± 1 ° C, or 249.2 ± 1 K (Weissenfeld, 2007).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-24 °C

Additional information

The freezing point of the test substance was determined by thermal analysis to be -24 ± 1 ° C, or 249.2 ± 1 K.