Pharmaceutical Emulsion

What is Emulsion An Emulsion is a thermodynamically unstable system consisting of two immiscible liquid phases,  one of which is dispersed/ distributed as a  globules/droplet size of  0.1-100 μm (internal or dispersed phase)  in the other Liquid medium(External/ continuous phase) stabilized by a third substance called an emulsifying agent. The diameter of the dispersed phase globules …

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Physically Instability of Emulsion | Pharmacy Notes

 1.Flocculation: Neighboring globals come closer to each other ⇒ forms Flocs Re-Dispersed on shaking Prevented by imparting charges on globules and using uniform-sized globules 2.Creaming: Occurs Due to the density difference Upward creaming-O/W emulsion Downward creaming-W/O emulsion If Creaming occurs, Drug is not uniformly distributed ⇒ variable in dosage ⇒ emulsion should be shaken for …

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