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Melting point / freezing point

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melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16. - 16. Feb. 2009
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
resp. EU A.1
instead of heating electrically, the aluminium block was heated with a gas burner in order to yield a higher temperature, considered as uncritical
GLP compliance:
yes (incl. QA statement)
Landesamt für Umwelt-, Wasserwirtschaft und Gewerbeaufsicht, Rheinland-Pfalz
Type of method:
capillary method
Key result
Melting / freezing pt.:
> 400 °C

No signs of melting were observed. No defined melting point or range could be determined.

The detection limit of the test system is between -80°C and 400°C. The melting point of the test item is much higher, the test item did not even melt in the flame of the gas burner.

Therefore, the melting point of silicid acid, aluminium magnesium sodium salt should be stated as > 400°C.

Description of key information


Key value for chemical safety assessment

Additional information

The melting point is >400°C.