EDTA fertilizer 1,Iron chelated:13.0% 2,Purity:99.0% 3,Water insoluble:0.1% 4,Appearance:yellow crystalline powder EDTA fertilizer1, Chemical name: Ethylenediaminetetraacetic acid, ferric sodium complex ... agriculture and horticulture and iron is present in a chelated form. Specification: 1, Purity:99.0% min 2, Iron chelated: 13%min. 3, Water insoluble: 0.1%max. 4 ...