Disodium citrate
Disodium citrate, more properly, disodium hydrogen citrate, is an acid salt of citric acid with the chemical formula Na2C6H6O7. It is used as an antioxidant in food as well as to improve the effects of other antioxidants. It is also used as an acidity regulator and sequestrant. Typical products include gelatin, jam, sweets, ice cream, carbonated beverages, milk powder, wine, and processed cheeses.