Synthesis of iron chelating agents is a most efficient agricultural practice to control iron deficiency in agricultural products. Many identified reagents, especially ethylene diaminedihydroxy phenyl acetic acid, which help in releasing iron in plants, are used for the treatment of iron deficiency and of plants growing in calcareous soils. Ortho–ortho ethylene diaminedihydroxy phenyl acetic acid has the ability to mak a compound with iron which is better than its other isomers, such as its ortho–para and para–para isomers. In this research, ortho–ortho ethylene diaminedihydroxy phenyl acetic acid was synthesized by the formylation of phenol, whereas it is less attainable by previous methods. In this method, para-formaldehyde was first added to the magnesium phenoxide. After acid washing, the addition of ethylenediamine and hydrogen cyanide was begun. The hydrolysis of the products was carried out in the last stage, in which a red–brown solid was produced with an efficiency of 82 %. The structure and purity of the products were characterized through FTIR and MS analysis techniques. Interpretation of these spectra showed many new results in this research.