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Physical & Chemical properties

Boiling point

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Start date: 02/04/2013 Completion date: 30/04/2013
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 relevant results.
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
329.4 °C
Remarks on result:
other: The sample underwent 2 exothermic events. The 1st event occurred from 175.1°C which had a heat of decomposition of -602.44 J.g-1, the 2nd event commenced from 329.4°C (-663.6 J.g-1). On completion of testing a black decomposed residue remained.

The test was conducted in an open aluminium crucible. The sample was observed to undergo two exothermic events. The first event was observed to commence from 175.1°C which had a heat of decomposition of -602.44 J.g-1, the second event commenced from 329.4°C (-663.6 J.g-1). On completion of testing a black decomposed residue remained inside the crucible. The test results indicate that the material decomposes before it boils.

Conclusions:
The test results indicate that the material decomposes before it boils (329.4 deg C).
Executive summary:

The test was conducted according to Method A2 of the EU Commission Directive. The test was conducted in an open aluminium crucible using differential scanning calorimetry. The sample was observed to undergo two exothermic events. The first event was observed to commence from 175.1°C which had a heat of decomposition of -602.44 J.g-1, the second event commenced from 329.4°C (-663.6 J.g-1). On completion of testing a black decomposed residue remained inside the crucible indicating that the test material had decomposed before boiling.

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
Start date: 02/04/2013 Completion date: 30/04/2013
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 relevant results.
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method according to Siwoloboff
Key result
Boiling pt.:
> 260 °C
Remarks on result:
other: The sample did not boil, the silicone oil began to smoke, and therefore the test was terminated. Upon cooling the sample was observed to have darkened slightly.

Run Number Mass of sample Used (g) Boiling Temperature (°C)

1 0.0816 > 260

Comments:

The sample did not boil, the silicone oil began to smoke, and therefore the test was terminated. Upon cooling the sample was observed to have darkened slightly. A DSC test was performed

Conclusions:
The sample did not boil, the silicone oil began to smoke, and therefore the test was terminated. Upon cooling the sample was observed to have darkened slightly.
Executive summary:

The study was conducted according to EU Method A2. The sample did not boil, the silicone oil began to smoke, and therefore the test was terminated. Upon cooling the sample was observed to have darkened slightly. A DSC test was performed to see if the sample undergoes exothermic decomposition.

Description of key information

Two tests were performed, the first showed that the substance did not reach boiling point at a temperature greater than 260°C, the second showed that the material decomposes before it boils at 329.4°C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
329.4 °C

Additional information

Decomposition temperature was assessed by DSC after an initial boiling point test had been stopped prematurely due to silicone oil smoking.

The test was conducted according to Method A2 of the EU Commission Directive. The test was conducted in an open aluminium crucible using differential scanning calorimetry. The sample was observed to undergo two exothermic events. The first event was observed to commence from 175.1°C which had a heat of decomposition of -602.44 J.g-1, the second event commenced from 329.4°C (-663.6 J.g-1). On completion of testing a black decomposed residue remained inside the crucible indicating that the test material had decomposed before boiling.