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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Start date of the experimental work: 1 February 2018 and completion date of the experimental work: 8 May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: siwoloboff method and according this results the DSC (differential scanning calorimetry) method was performed.
Key result
Boiling pt.:
> 250 °C
Remarks on result:
other: siwoloboff method
Remarks:
The sample started to melt at approx. 88°C and became a colourless liquid. No boiling was observed up to 250°C. Therefore an additional run was performed in the DSC.
Key result
Decomposition:
yes
Decomp. temp.:
358 °C
Remarks on result:
other: results with Diffrential scanning calorimetry method

Results SIWOLOBOFF method

The sample started to melt at approx. 88°C and became a colourless liquid. No boiling was observed up to 250°C.

Therefore an additional run was performed in the DSC.

Results with DSC (Differential scanning calorimetry method)

   Endotherm 1 onset temp. (°C) Heat of melting (J. g-1)  Endotherm 2 onset temp. (°C)  Heat of melting (J.g-1) 

 Screening test

84.7  173.12  357.5  78.714 

An initial endotherm was observed with an onset of 84.7°C which correlates with the melting point of the test item.

A secondary endotherm was then observed at approx. 357.5°C. The endotherm was multi-peak and has therefore been attributed to decomposition. This is supported by the observation that at the conclusion of the test the sample was observed to have changed to a dark brown colour.

Conclusions:
SIWOLOBOFF method: melt at approx. 88°C and no boiling point was observed up to 250°C.
Differential scanning calorimetry (DSC): An intial endotherm was observed with an onset of 84.7 °C which correlates with the melting point of the test item.
Decomposition observed at 358°C

Description of key information

Decomposition observed at 358°C therefore no melting point can be determined.

Key value for chemical safety assessment

Additional information