Peptization

Definition of Peptization:

• Peptization is the Process of converting a precipitate into colloidal dispersion by adding a peptizing agent (usually an electrolyte or surfactant).

Mechanism of Peptization:

• Peptizing agent imparts electrical charge to the precipitate particles.
• This causes repulsion, breaking them into colloidal size.

Example:

• Fe(OH)₃ precipitate  +  FeCl₃  →  Fe(OH)₃ colloid.

Use in Pharma:

• Preparation of metal sols for injectable or diagnostic formulations

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