Conductivity was characterized for the family MI -AgI (where M = NH4), which results when NH4 + is exchanged for Ag + in the binary system xAgI-(1-x)NH4I as a study model with concentrations of x = 0.4, 0.5, 0.6, 0.7, 0.8 and 0.9.The study samples were cultured using the slow evaporation method, a morphological characterization by powder X-ray diffraction was carried out for the proposed system.The technique allows to observe how the intensities of the peaks corresponding to the crystallographic planes vary and the AgI is used as a reference to perform correlations.The system has a significant variation in molar fractions or low concentrations of NH4I presenting high intensity peaks.