... Formula(NH4)2 SO4Free Acid0.2% maxHS Code31022100Grade Standardagriculture,steel gradePlace of originChina(mainland)ApplicationAgriculture,FertilizerBrand NameYuanchengAppearancewhite powder, color ... me if you have any question,thanks.Physical property:white powder, easily soluble in water, aqueous solution appears ... free to us if you have any question. steel grade white crystal Ammonium Sulphate