sodium metabisulfite,98%min 96%min ,competitive price, good quality, professional export experience to more than 10 countries. Sodium metabisulfite 98%min 96%miin1==Sodium Metabisulphite For Food UseMolecular Formula:Na2S2O5 Molecule Weight:190.10Appearance:White or light yellow crystalline powderQuality standard: GB1893-86 CAS 7681-57-4Test ItemStandard Request. AppearanceWhite or light ...