Suspension (chemistry)

In in which the suspended particles are smaller and do not settle.The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. In a solution, the dissolved substance does not exist as a solid and the two are homogeneously mixed.

Definition: A suspension is a heterogenous mixture in which the internal phase is dispersed throughout the external phase through mechanical agitation, with the use of certain excipients or suspending agents.

Classification: They are classified on the basis of the dispersed phase and the dispersion medium, where the former is essentially solid while the latter may either be a solid, a liquid or a gas. They are classified on the basis of dosage form which may either be oral, topical or parental.

COMMON EXAMPLES

Mud or muddy water, is where Soil , Clay , or Silt particles are suspended in water.

Flour suspended in water, as pictured to the right.

Paint

Chalk powder suspended in water.

Dust particles suspended in air.

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Suspension (chemistry)