EDTA Fe 13% is used as decolorant in photographic processing, additive in food industry, trace element in agriculture .Items Content Appearance yellow powder Content(C10H12N2O8FeNa.3H2O) ≥99% Chelated Fe ≥13.0% EDTA acid 65.5-70.5% PH 3.8-6.0 Water insoluble ≤0.1%