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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:
guideline study
Justification for type of information:
Experimental result using standard method of analysis
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The freezing point of a pure sample is the temperature at which transition from liquid to solid state takes place at atmospheric pressure.
GLP compliance:
no
Type of method:
other: standard laboratory method
Key result
Melting / freezing pt.:
-16.39 °C
Atm. press.:
978 hPa
Remarks on result:
other: Freezing point less than -16.39 degree C

Observation table:

 

Method details

Observations

Remarks

if, any

Method

Freezing Temperature Method

-

 

Principle of Freezing point test

 

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

g

1 ml

 

Type of cooling bath used

·        Cold Water

·        Crushed Ice

·        Crushed Ice-Salt

·        Dry Ice

·        Other (specify)

Crushed Ice-

Salt

 

Type and model

no. of temperature

sensor used

·        Glass thermometer

·        Thermocouple

·        Thermistor

·        Other (specify)

Glass thermometer

 

 

Atmospheric

pressure

 

hPa

 

978.0 hPa

 

 

Freezing point °C

°C

less than -16.39 °C

 
Conclusions:
The Freezing point of test chemical was determined with Freezing Temperature Method and it was observed to be less than -16.39 °C at 978.0 hPa
Executive summary:

The Freezing point of test chemical was determined with Freezing Temperature Method and it was observed to be less than -16.39 °C at 978.0 hPa

Description of key information

The Freezing point of test chemical was determined with Freezing Temperature Method and it was determine to be less than -16.39 °C at 978.0 hPa

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-16.39 °C

Additional information

The Freezing point of test chemical was determined with Freezing Temperature Method and it was determine to be less than -16.39 °C at 978.0 hPa

Other supporting studies from authoritative database and handbooks also suggest that the freezing point of test chemical was determined to be in the range of -20 degree C to -16.5 degree C.

Also, From EPI suit estimation software, freezing point of test substance was estimated to be -15.14 °C.