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Physical & Chemical properties

Boiling point

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Description of key information

The test item decomposed at 280 °C before boiling, and, therefore, it has no boiling point.

Key value for chemical safety assessment

Temperature of decomposition (state purity):
280 °C

Additional information

Key study


BASF SE (2001)


An experimental study was conducted according to OECD 103 to determine the boiling point of the test item using differential scanning calorimetry. During the first heating the measurement showed an endothermal effect at 230 °C, the melting peak. A second endothermal effect, which was observed as shoulder of the melting peak, when the sample was closed with the pierced cover was shifted to higher temperature (280°C) when the sample was closed with a non pierced cover. This indicated that the second endothermal effect could be a vaporisation process. During the second heating of both samples no endothermal effect was observed. That means for the sample closed with the pierced cover, that the test material was vaporized. This was proved due to the aluminium pan was empty. Because the test material of the second sample closed with the non pierced cover could not disengage and the second heating did not show an exothermal effect it could be assumed that either supercooling occured or the test material was decomposed. After opening the aluminium pan it was observed that thecolor of the test material has changed to dark brown. That means that the test material was decomposed and therefore it has no boiling point.


 


Supporting information


BATELLE (2003)


An experimental study was conducted according to EU Method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The DSC thermograms were recorded in triplicate over the temperature range 30-360 °C at 5 or 10 °C/min under nitrogen on approximately 6 mg of test item. The melting point of the test item is about 228.7 °C and its decomposition process starts at about 225.3 °C.