AVA Chemicals [P] Ltd. Manufactures a range of Micronutrient which includes Chelated Iron Ethylene Diamine Tetra Acetic Acid. AVA Chemicals [P] Ltd. Is an ISO 9001:2000 certified company. Chelated Iron Ethylene Diamine Tetra Acetic Acid is a clear solution that has Light Yellow Tan Powder like appearance. The chemical formula of the Chelated Iron Ethylene Diamine Tetra Acetic Acid is C10H12N2O8 FeNa.3H2O. The ferric content of the Chelated Iron Ethylene Diamine Tetra Acetic Acid is minimum 12%. Ph of a 1% Solution of Chelated Iron Ethylene Diamine Tetra Acetic Acid ranges 4 to 6.