Benzonitrile, 2,3-dichloro-

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

March - April 2016

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Principles of method if other than guideline:

Differential scanning calorimetry or DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Both the sample and reference are maintained at nearly the same temperature throughout the experiment.

GLP compliance:

not specified

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

2,3-dichlorobenzonitrile

EC Number:

625-309-3

Cas Number:

6574-97-6

Molecular formula:

C7H3NCl2

IUPAC Name:

2,3-dichlorobenzonitrile

impurity 1

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

Water

impurity 2

Reference substance name:

unknown

IUPAC Name:

unknown

Test material form:

solid: bulk

Details on test material:

This composition is the usual techical grade of AlzChem AG. It will be used when test substance has this composition (or is very closed) or no specific information is available.

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

>= 62 - <= 65 °C

Any other information on results incl. tables

The melting point of 2,3 -Dichlorobenzonitrile was determined applying DSC. 6.5 mg test substance were put into a platen and heated up to 500°C. The onset (63 °C) and the peak (65 °C) of the endothermic heat fluxes were measured.

Applicant's summary and conclusion

Conclusions:

The melting range of 2,3-Dichlorobenzonitrile is 63 - 65 °C

Executive summary:

The melting point of 2,3 -Dichlorobenzonitrile was determined applying differential scanning calorimetry. The test protocol is equivalent to the guideline EU A.01. The test substance, 6.5 mg 2,3 -Dichlorobenzonitrile, was put into a platen at room temperature and heated up to 500°C. The onset and the peak of the endothermic heat fluxes were reported. The onset of the endothermic heat flux is 63°C and reaches a peak at 65°C. Therefore, the melting range of 2,3 -Dichlorobenzonitrile is 63 - 65 °C.