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Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 Jul 2015
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to
EU Method A.2 (Boiling Temperature)
Version / remarks:
according to
OECD Guideline 103 (Boiling point/boiling range)
Version / remarks:
according to
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
GLP compliance:
Type of method:
differential scanning calorimetry
Key result
Decomp. temp.:
>= 170 °C
Remarks on result:
other: The test item has no boiling point up to 500 °C at atmospheric pressure (1005 hPa)


In the thermograms of the two DSC runs at a temperature of approximately 170 °C the test item starts to evaporate. No boiling could be observed.

The verification of the results in the DSC with the capillary method showed also no boiling of the test item. At the starting temperature of 100 °C the test item was a clear transparent slightly yellow liquid. At a temperature of 245 °C a part of the test item ascended in the capillary. From 310 °C on, the test item showed a change of the colour to light brown. Up to 350 °C no boiling of the test item could be observed.

Final Results

The test item has no boiling point up to 500 °C at atmospheric pressure (1005 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995). The test item evaporates at approximately 170 °C.

The test substance has no boiling point up to 500 °C at atmospheric pressure (1005 hPa) as determined according to E.U. Method A.2.

Description of key information

Boiling point: none up to 500 °C at 1005 hPa (EU Method A.2. differential scanning calorimetry)

Key value for chemical safety assessment

Additional information

The substance decomposes before boiling, starting at a temperature of 170 °C at 1005 hPa.

The decomposition is also supported by the results obtained from a thermal stability test performed prior to the vapour pressure measurement. The test items showed an exothermic effect in the temperature range of 150 - 230 °C, with a decomposition energy of -30 J/g.

A boiling point of ca. 318 °C at 1013 hPa was estimated by means of the Antoine equation obtained by the vapour pressure curve determined in a study performed according to EU Method A.4.

The estimated value supports the conclusion that the substance decomposes before boiling.