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Physical & Chemical properties

Melting point / freezing point

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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:
The Freezing point determination of test chemical was done using crushed ice and salt.
GLP compliance:
no
Type of method:
other: crushed ice and salt
Key result
Melting / freezing pt.:
< 7.07 °C
Atm. press.:
96 460 Pa
Remarks on result:
other: Other details not known

Observation Table & Result :

 Method Details  Freezing Temperature Method  Observations
Principle  

The freezing point of a pure sample is the

temperature at which transition from liquid to

solid state takes place at atmospheric

pressure.

 

Quantity of test item used

ml/g

 1 ml

 Type of cooling bath used

  1. Cold Water
  2. Crushed Ice
  3. Crushed Ice-Salt
  4. Dry Ice
  5. Other (specify)

 Crushed Ice-Salt

Type and model no. of temperature sensor used

  1. Glass thermometer
  2. Thermocouple
  3. Thermistor
  4. Other (specify)

Thermistor

Atmospheric pressure

hPa

 964.6 hPa

 Freezing point °C

 °C

 less than -7.07°C

Conclusions:
The freezing point of test chemical was determined. The method was used crushed ice and salt at respective atmospheric pressure using Micro LAB Interface FS–524 data generation system and thermistor as temperature detection system. The test was conducted in replicates and mean freezing point was determined to be < -7.07°C at 96460 Pa.
Executive summary:

The freezing point of test chemical was determined. The method was used crushed ice and salt at respective atmospheric pressure using Micro LAB Interface FS–524 data generation system and thermistor as temperature detection system. The test was conducted in replicates and mean freezing point was determined to be < -7.07°C at 96460 Pa.

Description of key information

Based on the available data from study report, the freezing point of test chemical was determined. The method was used crushed ice and salt at respective atmospheric pressure using Micro LAB Interface FS–524 data generation system and thermistor as temperature detection system. The test was conducted in replicates and mean freezing point was determined to be < -7.07°C at 96460 Pa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-7.07 °C

Additional information

Based on the available data from study report, the freezing point of test chemical was determined. The method was used crushed ice and salt at respective atmospheric pressure using Micro LAB Interface FS–524 data generation system and thermistor as temperature detection system. The test was conducted in replicates and mean freezing point was determined to be < -7.07°C at 96460 Pa.

Additional study fromhandbooks and authoritative databases indicates the freezing point of test chemical as -27°C.

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