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Diss Factsheets

Physical & Chemical properties

Boiling point

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Administrative data

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1991
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes
Type of method:
dynamic method
Remarks on result:
other: could not be determined due to the very low vapour pressure of the substance.
Conclusions:
Due to the very low vapour pressure of the substance, the boiling point could not be determined via the dynamic method.
Executive summary:

Due to the very low vapour pressure of the substance, the boiling point could not be determined via the dynamic method.

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2003
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Boiling pt.:
> 166 °C
Atm. press.:
ca. 50 Pa
Decomposition:
no
Remarks on result:
other: at about 50 Pa the substance does not boil below 166 °C

Applying a vacuum of about 5 * 10E-1 mbar (50 Pa), no boiling under reflux could be observed between room temperature and 166 °C.

Conclusions:
In conclusion, at about 5 * 10E-1 mbar (50 Pa) the test substance does not boil below 166 °C.
Executive summary:

The determination of the boiling point of the test item was performed according to the EEC Directive 92/69, A.2 "Boiling temperature", December 1992 and to the OECD Guideline No. 103: "Boiling point", adopted July 27, 1995.

In conclusion, at about 5 * 10E-1 mbar (50 Pa) the test substance does not boil below 166 °C.

Description of key information

Due to the very low vapour pressure of the substance, the boiling point could not be determined via the dynamic method.

Key value for chemical safety assessment

Additional information

Within the key study (EU-method A.2; GLP; RL1; Hüls, 1991) the boiling point could not be determined via the dynamic method due to the very low vapour pressure of the substance.

This is confirmed by the reliable supporting study (OECD 103 & EU-method A.2; GLP; RL1; RCC, 2003). The determination of the boiling point of the test item was performed under reflux and vacuum. At about 5 * 10E-1 mbar (50 Pa) the test substance did not boil below 166 °C.