... sodium metabisulfite food grade purity of 97% Min use for Bleaching agent,loosening agent,corrosion protection antiseptic,anti sodium metabisulfite food gradeinspection itemstandardinspection resultconclusion of each itemuncertaintyappearanceindustrial sodium metabisulfite ... fruit juice, can,etc ), antioxidant(for lily flower, sea food, fruit, vetegable,etc ) . Packing: external polypropylene woven ...