الملخص
ABSTRACT: Azo dye is prepared by Diazoniom salt method derive from 4-amino acetophenon and salicylic acid, the product compound is Acetophenon-4, azo-N,4-salicylic acid which identified by infra red spectra IR and the visible spectrum in acetone solvent. A complex of azo dye with Ferrous is prepared and identified by visible spectrum in acetone solvent and determined molecular ratio for this complex by mole ratio method.