Sodium Meta Bi Sulphate is an inorganic compound having chemical formula Na2S2O5 with molecular weight of 190.107 g/mol. With E number E223, it is used as antioxidant & preservative in food industry. For having disinfecting property, this compound also finds application in winemaking & home brewing for sanitization of equipments. It appears as white to yellow colored powder with slightly SO2-like odor and melting point of 170 degrees Celsius. Sodium Meta Bi Sulphate is very soluble in water & glycerol and shows insolubility in ethanol. Having excipient property, it is also utilized in pharmaceutical industry for preparation of tablets.