... agent,loosening agent,corrosion protection antiseptic,anti sodium metabisulfite food gradeinspection itemstandardinspection resultconclusion of each itemuncertaintyappearanceindustrial sodium metabisulfite is white or yellowish crystal ... antiseptic(fruit juice, can,etc ), antioxidant(for lily flower, sea food, fruit, vetegable,etc ) . Packing: external polypropylene woven bag, polyethylene plastic ...