Melting point determination for identification of samples

Determination of the melting point of an investigational test compound allows us to establish its identity (if we have suitable reference standards for comparison) and it can also be used [Pg.289]

Polymorphism is the ability of a solid material to exist in more than one form or crystal lattice structure and can potentially be found in any crystalline material, including polymers and metals, and is related to allotropy, which refers to packing variations in elemental sohds. (For example, both graphite and diamond are aUotropes of carbon.) Together with polymorphism, the complete morphology of a material is described by other variables, such as crystal habit, amorphous fraction or crystallographic defects. [Pg.290]

When the melting profile of a polymorphic material is obtained from a DSC, it is often found to contain a number of endothermic peaks corresponding to the melting of different crystal forms, possibly separated by an exothermic peak as molten material recrystallises [Pg.290]

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