... :5578-16-9 3.25 kg PP woven bag Sodium Acid Pyrophosphate (SAPP):CAS No.: 5578-16-9Molecular Formula: Na2H2P2O7 ItemValueUnitIndexContent (as ... )±4.0Arsenic(As),3ppmMaxHeavy Metals (as Pb),20ppmMaxFluoride(F),50ppmMax SAPP is used as rapid ferment agent, quality improver in food ... component of synthetic swelling agent, such as, bread, cake etc. Sodium Acid Pyrophosphate 95% min