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Physical & Chemical properties

Melting point / freezing point

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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Principles of method if other than guideline:
The sample is slowly cooled to about 3 - 5 °C below the expected freezing point by stirring a thermometer in a cooling bath. Crystallisation is then triggered either by rubbing with the thermometer at the test-tube wall or by inoculation. The seed crystals are evenly distributed in the sample by stirring intensely for a short period. After initialisation of crystallisation, the thermometer is only slowly moved up and down without touching the test-tube wall until the highest temperature is reached. The highest temperature is recorded, accurate to 0.1 °C, and is given as the freezing point. Temperature correction, if given in calibration certificates, is accounted for.

Test material

Constituent 1
Chemical structure
Reference substance name:
α,2,4-trichlorotoluene
EC Number:
202-381-0
EC Name:
α,2,4-trichlorotoluene
Cas Number:
94-99-5
Molecular formula:
C7H5Cl3
IUPAC Name:
2,4-dichloro-1-(chloromethyl)benzene
Constituent 2
Reference substance name:
2,4-Dichlor-1-(chlormethyl)-benzol
IUPAC Name:
2,4-Dichlor-1-(chlormethyl)-benzol

Results and discussion

Melting / freezing point
Melting / freezing pt.:
-3 °C

Applicant's summary and conclusion

Conclusions:
The freezing point of the test material is -3 °C