Term: cross-over concentration, \(c^{*}\)
https://doi.org/10.1351/goldbook.C01410

Definition:
The concentration range at which the sum of the volumes of the domains occupied by the solute molecules or particles in solution is approximately equal to the total volume of that solution. The term 'domain' refers to the smallest convex body that contains the molecule or particle in its average shape.

Source: Purple Book, 1st ed., p. 57 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'cross-over concentration, \(c^{*}\)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01410

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