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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
Study period:
Measurment date: 29 July 2016.
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
other: Determination of pour point (ASTM D 97-16)
Deviations:
not specified
Principles of method if other than guideline:
The pour point was determined as the nature of the substance means it is unlikely to have a defined melting point.
GLP compliance:
no
Other quality assurance:
other: The laboratory participates in the international ASTM inter-laboratory test scheme.
Type of method:
pour point
Key result
Melting / freezing pt.:
-18 °C
Atm. press.:
1 012 hPa
Remarks on result:
other: Result is the pour point

The test was run three times with the following results:

 Run  Result (pour point)
 1  

-18°C
 2  

-18°C
 3  

-18°C

The final result is expressed as the mean of all the runs (mean = -18°C)

Conclusions:
The pour point of the test item -18°C at 1012 hPa.
Executive summary:

Introduction

The pour point of the test substance was determined using the following method: ASTM D 97 -16.

Method

The test item is poured into the test jar to level mark. The test jar is closed with the cork carrying the higher-pour thermometer. The test item is cooled without stirring to 9°C above the expected pour point. Pour point are expressed in integers that are positive or negative multiples of 3°C. The test is repeated three times.

Results

 Run  Result (pour point)
 1

-18°C

 2

-18°C

 3

-18°C

The final result is expressed as the mean of all the runs (mean =-18°C)

Conclusion

The pour point of the test item is -18°C at 1012 hPa.

Description of key information

The pour point was determined as the nature of the substance means it is unlikely to have a defined melting point.

Key value for chemical safety assessment

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

Additional information