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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:
07-12 October 2005
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)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Batch n°: 00467090 (charge 05C0836)
- Expiration date: 04 May 2006
- Purity: 99.9%
- Storage condition of test material: at room temperature at about 20°C
Key result
Melting / freezing pt.:
119.2 °C
Atm. press.:
99.9 kPa

Preliminary test

The first endothermic heat effect, the melting, was observed at 119.9 °C. After the experiment, the sample had lost about 99.6% of its mass, was molten and brownish in color.

Main test

DSC-runs were recorded between 100°C and 170°C with a heating rate of 10 K/min. In the first main test run, a melting point of TIC2782 (T002907) was determined to be at 119.1 °C. The melting point of the test item during the second main test run was determined to be 119.4°C. During these runs, the samples lost 0.4% and 0.5% of their mass, respectively. After the measurement both samples were white and molten. The melting temperature of T002907 was determined as the average melting temperature obtained from Experiment 1 and Experiment 2 and equals 119.2°C (392.4K).

Conclusions:
The melting point of TIC2782 (T002907) was determined to be 119.2°C +/- 0.2°C (392.4 K +- 0.2 K) by using DSC.

Description of key information

A GLP study was performed according to OECD guideline 102 and EU Method A.1 without deviations (Weissenfeld M, 2006). The melting point of T002907 was determined to be 119.2°C using DSC.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
119.2 °C

Additional information