Solubility/miscibility: crystal/amorphous comparison
Amorphous and glassy states of molecular and pharmaceutical compounds Applications and uses
Article REF: PHA2032 V1
Solubility/miscibility: crystal/amorphous comparison
Amorphous and glassy states of molecular and pharmaceutical compounds Applications and uses

Author : Marc DESCAMPS

Publication date: April 10, 2020 | Lire en français

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6. Solubility/miscibility: crystal/amorphous comparison

To understand the specifics of the "dissolution" of an amorphous compound, it is necessary to compare the situation with that of a crystalline compound, by considering the possible action of a solubilizing agent and that of a situation of crystalline polymorphism.

6.1 Dissolution of a crystalline active ingredient in a solvent

Figure 13 schematically illustrates the thermodynamic situation associated with the dissolution of a crystalline PA in a solvent. In practice, this solvent is often water, but this diagram can also be used when we are interested in the dissolution of a PA in an excipient,...

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