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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
A solution freezes at a lower temperature than does the pure solvent. This phenomenon is called freezing point depression. The freezing point depression of a solution is a colligative property of the solution which is dependent upon the number of dissolved particles in the solution. The higher the solute concentration, the greater the freezing point depression of the solution. The freezing point of the pure solvent is at constant temperature but the freezing point of the solution slowly decreases.
GLP compliance:
no
Type of method:
method to determine freezing temperature
Remarks:
Freezing point depression of Pure solvent
Key result
Melting / freezing pt.:
-18 °C
Atm. press.:
96 990 Pa
Remarks on result:
other: Other details not known

TEST DESCRIPTION AND RESULTS

Method Details

Observations 

Remarks if, any

Method

Method according to Freezing point depression of Pure solvent

 

 

Principle of Boiling point test

A solution freezes at a lower temperature than does the pure solvent. This phenomenon is calledfreezing point depression. The freezing point depression of a solution is a colligative property of the solution which is dependent upon the number of dissolved particles in the solution. The higher the solute concentration, the greater the freezing point depression of the solution. The freezing point of the pure solvent is at constant temperature but the freezing point of the solution slowly decreases.

 

 

Volume of chemical used

ml

3 ml

 

Atmospheric pressure

hPa

969.9 hPa

 

Freezing point °C

°C

 -18°C

 

Conclusions:
The freezing point was determined to be -18°C at 96990 Pa.
Executive summary:

The freezing point of test chemical was determined. The method followed was referred to as freezing point depression. The freezing point was determined to be -18°C at 96990 Pa.

Description of key information

Based on the available data from study report, thefreezing point of test chemical was determined. The method followed was referred to as freezing point depression. The freezing point was determined to be -18°C at 96990 Pa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-18 °C

Additional information

Based on the available data from study report, thefreezing point of test chemical was determined. The method followed was referred to as freezing point depression. The freezing point was determined to be -18°C at 96990 Pa.

In a supporting study fromhandbook and authoritative database, the freezing point of test chemical was determined to be -7.5°C.

Additional study from handbook indicates the freezing point of test chemical as -8°C at 101300 Pa.