EDTA Zinc is a powerful chelating agent and acts as a micro-nutrient in agriculture and horticulture. It is used as a fertilizer to overcome Zinc deficiency in plants, as well as a source of Zinc for those plants which require Zinc for their normal growth and higher yields. It also forms stable complexes with metal ions. Specifications Appearance: White Powder Chelate Zn?%: 14.5 - 15.5 % Water Insoluble: 0.1% Max ph (1% Water Solution): 6.0 - 7.0 Packing 55.115 lb paper bag, 40 bags per pallet