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Physical & Chemical properties

Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
7-19 Jan 1999
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 103 (Boiling Point)
according to guideline
EU Method A.2 (Boiling Temperature)
according to guideline
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
GLP compliance:
Type of method:
differential scanning calorimetry
Decomp. temp.:
180.7 °C


Preliminary tests in aluminum capsules (pierced lids) did not show any significant endothermic processes corresponding to the liquid-vapor transition phase. With non-pierced lids, the decomposition corresponding to an exothermic process began at about 180 °C before the boiling point was reached.

The decomposition temperature of the purified test material was also measured and it was 180.0 °C.

Description of key information

Decomposition at 180.7 °C starting at ca. 180 °C (OECD 103, EU A.2, EPA OPPTS 830.7220)

Key value for chemical safety assessment

Additional information

The substance (technical grade) under ambient pressure decomposes before boiling. The decomposition temperature was determined using DSC method. A similar behavior was observed for the purified substance, the decomposition temperature of 180.0 °C was determined.