Sodium Pyrophosphate Acid is extensively used in food processing as in canned seafood, cured meat, and potato products to adjust the pH, maintain colour, improve the water holding capacity, and reduce purge during retorting. Sodium Pyrophosphate Acid can be confused with cream of tartar because of their common function as a baking powder. These can be used with white vinegar to make a paste-like cleaning agent. It is a vital ingredient that is found in Doh and gingerbread house icing.