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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From January 31 to October 01, 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Validation applies with minor restrictions for technical inaccuracies.
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
yes
Remarks:
heating rate; single determination
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
yes
Remarks:
heating rate; single determination
Qualifier:
according to
Guideline:
other: ASTM E537-86
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
UK GLP Compliance Programme (inspected on August 21, 2007/ signed on October 15, 2007)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Storage condition of test material: Approximately 4 °C in the dark, under nitrogen.
Key result
Boiling pt.:
269 °C
Atm. press.:
99.51 kPa
Remarks on result:
other: under air atmosphere. accuracy ± 1 °C; 542 ± 1 K

Table 4.3/1: Boiling point – results

Thermal Event

Interpretation

Temperature (onset)

°C

K

Thermographic Data - Determination 1 (nitrogen atmosphere)

Endotherm

Boiling temperature

267.00

540

Thermographic Data - Determination 2 (air atmosphere)

Endotherm

Boiling temperature

268.72

542

 

Atmospheric pressure: 99.51 kPa

Executive summary:

The boiling point of the test substance was determined under GLP by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86 and according to OECD 103 and EU method A2 guidelines. Two runs were performed, under nitrogen and air atmosphere, showing no oxidative degradation, and the result in air was retained.

The boiling temperature of test substance has been determined to be 269 ± 1 °C (542 ± 1 K) at an atmospheric pressure of 99.51 kPa.

Description of key information

Measured boiling point = 269°C under 99.5 kPa (not corrected to normal atmP) 

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
269 °C

Additional information

A reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. Despite minor restrictions due to technical inaccuracy, it is considered as a key study. The result is retained as key data.