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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:
14 November 2003
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Method A2 of Commission Directive 92/69/EEC. Restrictions due to heating device and heating rate. Purity and isomers composition specified.
according to guideline
OECD Guideline 103 (Boiling Point)
Version / remarks:
27July 1995
according to guideline
EU Method A.2 (Boiling Temperature)
Version / remarks:
GLP compliance:
yes (incl. QA statement)
Swiss GLP compliance programme (inspected on September 09 and 30, 2002/ signed on December 2002)
Type of method:
method according to Siwoloboff
Specific details on test material used for the study:
- Physical state: liquid
- Storage condition of test material: refrigerator (0-10°C) under nitrogen
Atm. press.:
98 kPa
Decomp. temp.:
ca. 294 °C

Individual measurements: (1) 567 K, (2) 572 K.

Accuracy not specified.

Executive summary:

The boiling point of the test substance was determined under GLP according to OECD103/EU A2 guideline, Siwoloboff (capillary) method.

Two main runs were performed, and the lower temperature was retained.

The test material has been determined to decompose from approximately 294 °C, prior to boiling at a pressure of 98.0 kPa.

Description of key information

Decomposition before boiling, from ca 294°C. (experimental)

Key value for chemical safety assessment

Additional information

A reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. Despite minor restrictions on accuracy, it is considered as a key study. As decomposition was observed, no key value can be retained.