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Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20-21 October 2003
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to
OECD Guideline 103 (Boiling point/boiling range)
according to
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Lot/batch No.: 00410155
- Analytical purity: 96%
- Expiration date of the lot/batch: 2004-05-05
- Storage condition of test material: At room temperature at about 20°C
Boiling pt.:
317.5 °C
Remarks on result:
other: The atmospheric pressure was not reported, ambient conditions were anticipated.

Preliminary test

A preliminary test was performed in the heating range from 25°C to 400°C with a heating rate of 20K/min. Next to the first endothermic heat effect, melting, a second endothermic heat effect, the boiling, was detected at 285.7°C. After the experiment, the sample had lost about 96% of its mass and the color of the sample was black and melted.

Boiling point determination (two main test runs)

In order to determine the boiling point more precisely, further DSC-runs were recorded between 200°C and 340°C (1st main test run) and 240°C and 360°C (2nd main test run) with a heating rate of 5 K/min. In the first main test run, the boiling point of T002251 was determined to be 317.4°C. The boiling of the test item during the second main test run was determined to be at 317.6°C. During these runs, the samples lost 88.6% and 93.4% of their mass, respectively. After the measurement both samples were melted and black in color.
The mean boiling point of T002251 was determined to be 317.5°C +/- 0.2 under the conditions of the test.

Description of key information

In a GLP study according to OECD guideline 103 and EU method A.2 (K1, Tognucci, 2003) the boiling point of T002251 was determined to be 317.5°C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
317.5 °C

Additional information