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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
Study period:
2018-02-06 - 2018-03-14
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
based on ASTM E-537-76
Deviations:
no
Qualifier:
equivalent or similar to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
based on ASTM E-537-76
Deviations:
no
GLP compliance:
no
Type of method:
other: differencial thermal analysis
Key result
Melting / freezing pt.:
-3 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Melting point; no pressure was stated
Melting / freezing pt.:
-17.5 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Freezing point; no pressure was stated
Conclusions:
The Melting point of the tested solution is -3 °C, while the Freezing point is -17.5 °C.
Executive summary:

The aqueous solution of the sample was tested according to ASTM E-537-76 with a differential scanning calometry instrument (Test material is used as aqueous solution for this test, because only the aqueous solution of the test material is manufactured and marketed.). The Melting point of the tested solution is -3 °C, while the Freezing point is -17.5 °C.

Description of key information

The aqueous solution of the sample was tested according to ASTM E-537-76 with a differential scanning calometry instrument (Test material is used as aqueous solution for this test, because only the aqueous solution of the test material is manufactured and marketed.). The Melting point of the tested solution is -3 °C, while the Freezing point is -17.5 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-3 °C

Additional information

No pressure was stated in analytical report.

Melting and freezing point are different from each other, therefore the higher melting point is used for CSA. It is assumed, that the temperatures are different from each other because crystallisation is inhibited and takes place below the melting point.