Sodium Acid Pyrophosphate
 English name: Sodium Acid Pyrophosphate
 Chemical formula: Na2H2P2O7
 Molecular Weight: 221.95
 CAS No.: 7758-16-9
 EINECS No.: 231-835-0
 H.S CODE: 28353990
 Properties: White powder, relative density 1.86, insoluble in water, soluble in ethanol, aqueous solution is heated with dilute acid hydrolysis of phosphoric acid, hygroscopic, absorbing water to form six crystalline hydrate, when heated to above 220 ​​℃ partial decomposition sodium phosphate.

 Uses: used as a leavening agent for baked goods, control the fermentation speed; for instant noodles, reduce product water recovery time, non-stick is not bad; for biscuits cakes, shorten the fermentation time, reduce product breakage, loose gap neatly, extend the storage period.