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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:
25 Jan - 08 Dec 2006
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP guideline study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted in 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
adopted in 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ASTM E 537, ASTM E 473, EN ISO 11357-3
GLP compliance:
no
Other quality assurance:
other: EN ISO 9001
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Storage: < 30 °C
Atm. press.:
992 hPa
Remarks on result:
other: No melting point, the test item solidifies amorphously in the glassy state at -36 °C.

Results
No melting peak was seen in the heating cycle. A relaxation peak and an endothermic Cp-step at - 36 °C (2nd heating) can be seen in the DSC curve, which is characteristic of a glass transition. The test item solidifies amorphously in the glassy state. No melting point was detected.

Description of key information

No melting point detected, the test item solidifies amorphously in the glassy state at ca. -36 °C (OECD 102, DSC).

Key value for chemical safety assessment

Additional information

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