α,α'-dichloro-p-xylene

Melting point / freezing point

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

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

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. QA statement)

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.