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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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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
Study period:
26/02/2016-26/02/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Data is from experimental study report
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-salt cooling bath.
GLP compliance:
no
Type of method:
other: crushed ice-salt cooling bath.
Key result
Melting / freezing pt.:
< -13.8 °C
Atm. press.:
976.8 hPa
Remarks on result:
other: No other details available

TEST DESCRIPTION AND RESULTS

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

1.0

 

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)

Thermistor model 103

-

Atmospheric pressure

hPa

976.8

-

Freezing point °C

°C

<-13.8

-

Conclusions:
The Freezing point of test chemical was determined with crushed ice-salt cooling bath and the freezing point was inferred to be < -13.8 °C at 976.8 hPa.
Executive summary:

The Freezing point determination of test chemical was done using crushed ice-salt cooling bath. No crystallization was observed up to -13.8°C. Hence, the freezing point was inferred to be<-13.8°C at976.8hPa.

Description of key information

The Freezing point determination of test chemical was done using crushed ice-salt cooling bath. No crystallization was observed up to -13.8°C. Hence, the freezing point was inferred to be<-13.8°C at976.8hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-38.8 °C

Additional information

The Freezing point determination of test chemical was done using crushed ice-salt cooling bath. No crystallization was observed up to -13.8°C. Hence, the freezing point was inferred to be<-13.8°C at976.8hPa.

The other reported data from reliable handbook and authoritative database inidcates the freezing point of test chemical as 38.8 degree C.