COLLOIDAL DISPERSION
Definition:- Colloidal dispersion is derived from two words colloidal+dispersion. "colloidal" means "colloid" and "dispersion" means "spreading". The term colloid implies stickiness means (a glue-like substance in Greek) and a colloidal system is a dispersion phase which means internal phase and dispersed in the external phase . And colloidal are polyphasic systems and the particle size of the colloidal system is (1nm-1mm) they are dispersed in a dispersion medium that is a large amount and called an external phase. Dispersion phase+Dispersion medium=Colloidal (heterogeneous system) (glue-like). Official preparation of colloidal system:- The official preparation of the colloidal system is meant for parenteral use they are:- 1. Iron dextran injection (BP):- In this type of official preparation of colloidal system dextran complexes with ferric ions and used in the treatment of anaemia and are meant for intramuscular use. 2. Iron sorbitol ...