Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05 February 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing 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.1, Official Journal of the European Union L 142 of 31 May 2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
Organisation for Economic Co-operation and Development (OECD), Guidelines for Testing of Chemicals, Guideline No. 102, “Melting Point / Melting Range”; adopted July 27, 1995
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
capillary method
Specific details on test material used for the study:
No further information specified in the study report.
Key result
Melting / freezing pt.:
100.1 °C
Atm. press.:
98.4 kPa
Decomposition:
no
Sublimation:
no

RESULTS

Using a linear heating rate of 0.5 °C/min, the melting point of the test item was found to be 100.1 ± 0.03 °C (95% confidence interval), i.e. 373.3 K.

 

Measured temperatures corresponding to the melting of the test item (three experiments (I, II, III) with three parallel samples each (1, 2, 3))

 

Measured Temperature during the Main Study (°C)

 

I / 1

I / 2

I / 3

II / 1

II / 2

II / 3

III / 1

III / 2

III / 3

Mean

Melting Point

100.1

100.2

100.1

100.2

100.1

100.1

100.1

100.1

100.1

100.1±0.03

 

Conclusions:
Using a linear heating rate of 0.5 °C/min, the melting point of the test item was found to be 100.1 ± 0.03 °C (95% confidence interval), i.e. 373.3 K.
Executive summary:

For the determination of the melting point or melting range, the capillary method was used. A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature. The initial and final melting temperatures were determined.

 

Using a linear heating rate of 0.5°C/min the melting point of α,α’-Dichloro-p-xylene was found to be 100.1 ± 0.03 °C (95 % confidence interval), i.e. 373.3 K.

Description of key information

100.1 ± 0.03 °C (95 % confidence interval), i.e. 373.3 K.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
100.1 °C

Additional information

For the determination of the melting point or melting range, the capillary method was used. A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature. The initial and final melting temperatures were determined.

 

Using a linear heating rate of 0.5°C/min the melting point of α,α’-Dichloro-p-xylene was found to be 100.1 ± 0.03 °C (95 % confidence interval), i.e. 373.3 K.