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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Between 07 January 2009 and 17 April 2009.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
Qualifier:
according to
Guideline:
other: ASTM E537-86
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Date of inspection: 19th August 2008 Date of signature: 4th March 2009
Type of method:
differential scanning calorimetry
Test material information:
Composition 1
Key result
Boiling pt.:
359 °C
Atm. press.:
102.44 kPa
Decomposition:
yes
Remarks:
the test substance began to boil with signs of decomposition at the specified temperature
Key result
Boiling pt.:
632 K
Atm. press.:
102.44 kPa
Decomposition:
yes
Remarks:
the test substance began to boil with signs of decomposition at the specified temperature

Thermographic data - determination 1:

Thermal Event

Interpretation

Temperature

ºC

K

Onset of endotherm

Onset of boiling with decomposition

359.88

633.03

Atmospheric pressure: 102.44 kPa

Thermal Event

Interpretation

Temperature

ºC

K

Onset of endotherm

Onset of boiling with decomposition

359.23

632.38

Atmospheric pressure: 102.44 kPa

Overall result: Boiling with decomposition from 632 K

Discussion:

On examination of the crucible after testing, the presence of a brown stain around the periphery of the crucible indicated decomposition of the test material. Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicates that the observed decomposition in both determinations is probably thermal and not oxidative.

Conclusions:
The test material has been determined to boil with decomposition from 359°C (632 K) at 102.44 kPa.
Executive summary:

Boiling Temperature:

The test material was found to boil with decomposition from 359°C (632 K) at 102.44 kPa by differential scanning caloritry, using ASTM E537-86, Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Description of key information

The boiling point of the substance was determined as 359 °C (632 K) at 102.44 kPa according to OECD Guideline 103 by Differential Scanning Calorimetry (DSC). During boiling the substance was found to decompose thermally.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
632 K

Additional information

The substance was found to decompose thermally during boiling. The boiling point (with decomposition) was determined as 359 °C (632 K) at 102.44 kPa.