... can bediscussed.Shelf Life: one yearUse:used in feed, preserves, waste water treatmentand water purity, disinfection, rubber, leather,washingpowder, livestock feed, pencils. ... in a cool and dry place;avoid contact sunshine ,water and moisture;avoid contact with strong acid,oxidants or poisonous ... products has comprehensive competition. 6.Packing goods factory supply water treatment of ferrous sulphate