The importance of colloidal surfactants containing nitrogen and sulphur donor ligands in applied areas of research and many industrial processes cannot be under estimated. Colloido chemical behavior of complexes derived from copper (II) palmitate with substituted phenylthiourea and substituted 2-amino Benzothiazole in benzenepropanol mixture of varying composition has been investigated by viscometric measurement. The combination is found to posses fungicidal, insecticidal, pesticidal and nematocidal activities. The azole and azine ring compounds are very good pharmacological agents and can be used as antimalarial, antimotion sickness, antihistaminic and analgesic. The combination of copper soap and ligand makes complexes which are highly biodegradable and play important role in biological activities. The interaction of these N donor ligands with metal ion gives complexes of different geometries and literature survey reveals that these complexes are potentially more biologically active. Complexes of copper (II) palmitate with N-donor ligands were synthesized and characterized by their elemental analysis, metal weight, m.pt, IR and NMR spectral studies. Copper soaps due to their surface active properties play a vital role in various fields. Complexes containing copper palmitate show remarkable applications in industries and are used as emulsifiers, foaming and wetting agents and dispersing agents. In the present work benzene and propanol have been chosen as the cosolvent as mixed solvents have tendency to interact with complex molecules and affect the aggregation of complex molecules.