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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
method according to Siwoloboff
Remarks:
plus differential scanning calorimetry for confirmatory purposes
Key result
Atm. press.:
100 800 Pa
Decomposition:
yes
Decomp. temp.:
> 300 °C
Remarks on result:
other: Boiling point not determinable; test material decomposes at temperatures above approx. 300 °C without boiling

As the boiling tube was heated, gradual darkening was observed at elevated temperature, but no boiling below 360˚C. As it was difficult to ascertain the onset of this apparent decomposition, DSC was also employed to further investigate.

The DSC trace showed significant exotherms above approximately 300˚C, consistent with decomposition of the test substance (observed to be a black solid after testing). Slight deviation from the baseline at lower temperature (and some discoloration seen over the same temperature range during the Siwoloboff test) may have been attributable to minor components.

Description of key information

Decomposes above approximately 300ºC without boiling (OECD 103, EU A.2)

Key value for chemical safety assessment

Additional information

Boiling point at 100800 Pa: none; decomposes above approximately 300ºC without boiling