EDTA, Disodium Salt, Dihydrate is a chelating agent, a general chemical, and a sequestrant. As an agent for complexation. EDTA is mainly used as an additive to detergent, a chemical for photography, paper-making, and oil-field. It is also used as detergent for boiler cleaning and reagent in chemical analysis. EDTA Disodium WC Code: 04-087-02 Sales Specifications Appearance: White Crystalline Powder Content: 99.0% Min Chloride: 0.020% Max Sulfate: 0.020% Max NTA: 1.00% Max Heavy Metals: 10 PPM Max Ferrum: 10 PPM Max Chelating Value: 265 mg (CaCO3)/g Min pH (50g/L:25oC): 4.0 -5.0 Packing 55.12 lb bag, 36 bags per pallet