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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:
25 May to 21 June 2012
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
The study was conducted according to an internationally recognised method, and under GLP, but experimental details are missing. The substance is adequately identified, but some data on composition is missing. Therefore validation applies with restrictions.
according to guideline
EU Method A.2 (Boiling Temperature)
no isomers ratio; no details on the crucible type are provided; ambient atmospheric pressure, or correction to normal atmP, was not specified
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
11 March 2011
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Physical state/Appearance : Light yellow translucent liquid
- Storage : The test substance was stored at room temperature protected from direct sun light.
Key result
Boiling pt.:
305.9 °C
Atm. press.:
ca. 1 atm

Table 4.3/1: Boiling point – results

Test no.

Start temperature

Heating rate

Onset temperature


250 °C

+5 °C/min

305.7 °C


250 °C

+5 °C/min

305.8 °C


250 °C

+5 °C/min

306.2 °C

Mean ± S.D.



305.9 ± 0.3 °C


Three successive tests were retained.

Mean onset for boiling occurred at 305.9 °C ± 0.3 °C. The validity criteria were fulfilled: the standard deviation within the three replicate assessments did not exceed 0.5 °C.

Therefore the average value is retained as final result.

Reference material: Ethanol. Nominal onset = 78.2 ± 0.5 °C. Measured onset = 77.8 °C

Executive summary:

The boiling point of the test substance was determined under GLP according to EU A2 guideline, by Differential Scanning Calorimetry (DSC).


Three runs were performed and the mean final temperature was retained.


The boiling temperature of test substance has been determined to be 305.9 ± 0.3 °C.

Description of key information

Experimental boiling point = 305.9°C (atmP, not specified).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
305.9 °C

Additional information

A reliable experimental study, conducted according to a recognized EC method and under GLP, is available. Despite restrictions due to incomplete test item identification and missing experimental details, it is considered as key study, and the result is retained as key data.