Definition - What does Lyophobic mean?

Lyophobic is a term that is used to refer to solvents that are not soluble in liquids. The term Lyophobic comes from “Lyo” which means solvent and “Phobic” which means hating. When a lyophobic solution dissolves in a liquid, a very weak attraction force exists between the liquid molecules and colloidal particles and system does not readily become a colloidal solution.

Petropedia explains Lyophobic

A lyophobic solution contains colloidal particles that do not mix with liquids hence lyophobic solutions are difficult to prepare and special techniques are used to ensure that the colloidal particles dissolve in the liquid. All lyophobic solutions are generally less stable as they have a weak force of attraction between the colloidal particles and the liquid particles. Even if a small quantity of electrolyte is added in such solutions, they become very unstable and tend to form a precipitate. Lyophobic solutions are irreversible in nature.

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