The TBF copolymer resin was synthesized by the condensation of o-Toluidine and biuret with formaldehyde in the presence of 2M HCl as a catalyst at 120 ± 2 0C for 5 h with molar proportion of reactants. The TBF copolymer proved to be a selective chelating ion-exchange polymer for certain metals. Chelating ion-exchange properties of this polymer were studied for Cu2+, Ni2+, Co2+, Zn2+, and Pb2+ ions. A batch equilibrium method has been employed in the study of the selectivity of metal-ion uptake involving the measurements of the distribution of a given metal ion between the copolymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The polymer showed higher selectivity for Cu2+, Ni2+ than for Co2+, Zn2+, and Pb2+ions. Study of distribution ratio as a function of pH indicates that the amount of metal ion taken by TBF copolymer resin increases with the increasing pH of the media.