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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:
12-20 November, 2012
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
The study was conducted according to an internationally recognised method, and under GLP, but experimental details are missing. The substance is adequately identified. Therefore validation applies with restrictions.
according to guideline
EU Method A.2 (Boiling Temperature)
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: white crystalline powder.
- Storage condition: Room temperature protected from direct sun light.
Key result
Boiling pt.:
317.3 °C
Atm. press.:
ca. 1 atm

Table 4.3/1: Boiling point – results

Test no.

Start temperature

Heating rate

Onset temperature


260 °C

+5 °C/min

317.1 °C


260 °C

+5 °C/min

317.0 °C


260 °C

+5 °C/min

317.9 °C


260 °C

+5 °C/min

317.0 °C

Mean ± S.D.



317.3 ± 0.4 °C


Four successive tests were retained.

Mean onset for boiling occurred at 317.3 ± 0.4 °C. The validity criteria were fulfilled: the standard deviation within the four replicate assessments did not exceed 0.5 °C.

Therefore the average value is retained as final result.

Executive summary:

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


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


The boiling temperature of test substance has been determined to be 317.3 ± 0.4 °C.

Description of key information

Experimental boiling point = 317.3°C (atmP, not specified).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
317.3 °C

Additional information

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