... instant noodles, it ca Sodium Acid Pyrophosphate(SAPP)Chemical formula :Na2H2P2O7Molecular Weight:221.95 CAS Number:7758-16-9Properties:White ... heated together with diluted inorganic acid, it will be hydrolyzed into phosphoric acid; It is hydroscopic, and ... above 220°C, it will be decomposed into sodium meta phosphate.Uses:As a leavening agent it ... ignition(105°C) %≤ 0.50.5 Sodium Acid Pyrophosphate