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Boiling point

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 February 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
Commission Regulation (EC) No 440/2008 of 30 May 2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), Method A.2, Official Journal of the European Union L 142 of 31 May 2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
Organisation for Economic Co-operation and Development (OECD), Guidelines for Testing of Chemicals, Guideline No. 103, “Boiling Point”, adopted July 27, 1995
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
other: capillary method using an electronic controlled heating system.
Specific details on test material used for the study:
No further details specified in the study report.
Key result
Boiling pt.:
264.3 °C
Atm. press.:
97.1 kPa
Decomposition:
no

RESULTS

The test was carried out at 97.1 kPa atmospheric pressure. Using a linear heating rate of 0.5 °C/min, the boiling point of the test item was found to be 264.3 ± 0.46 °C (95 % confidence interval), i.e. 537.5 K.

 

Measured temperatures corresponding to the boiling point of the test item (three experiments (I, II, III) with two parallel samples each (1, 2)

 

Measured Temperatures during the Main Study (°C)

 

I / 1

I / 2

II / 1

II / 2

III / 1

III / 2

Mean

Boiling Point

264.5

264.4

264.7

264.7

263.8

263.7

264.3±0.46

 

Conclusions:
The test was carried out at 97.1 kPa atmospheric pressure. Using a linear heating rate of 0.5 °C/min, the boiling point of the test item was found to be 264.3 ± 0.46 °C (95 % confidence interval), i.e. 537.5 K.
Executive summary:

For the determination of the boiling point, the capillary method is used. A small amount of the test item is heated in the electronic controlled sample block and the temperature around the sample is displayed. The sample is observed visually while raising the temperature. A phase transformation from liquid to vapour usually is deduced by the formation of bubbles. The test item is assessed visually for any possible changes in its appearance, consistency and colour. The initial temperature of boiling or other effects observed is registered with the corresponding heating temperature.

 

The boiling point of α,α’-Dichloro-p-xylene is: 264.3 ± 0.46 °C.

Endpoint:
boiling point
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Study period:
Not yet available
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
QSAR prediction
Principles of method if other than guideline:
Data is QSAR data.
GLP compliance:
yes (incl. certificate)
Type of method:
other:
Remarks:
QSAR prediction
Key result
Boiling pt.:
253.89 °C
Remarks on result:
other: QSAR data
Conclusions:
The predicted boiling point using QSAR model EPISuite is 253.89 °C.
Executive summary:

The predicted boiling point using QSAR model EPISuite is 253.89 °C.

Description of key information

The boiling point of α,α’-Dichloro-p-xylene is: 264.3 ± 0.46 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
264.3 °C

Additional information

For the determination of the boiling point, the capillary method is used. A small amount of the test item is heated in the electronic controlled sample block and the temperature around the sample is displayed. The sample is observed visually while raising the temperature. A phase transformation from liquid to vapour usually is deduced by the formation of bubbles. The test item is assessed visually for any possible changes in its appearance, consistency and colour. The initial temperature of boiling or other effects observed is registered with the corresponding heating temperature.

 

The boiling point of α,α’-Dichloro-p-xylene is: 264.3 ± 0.46 °C.