I. Chemical Name: Sodium Acid Pyrophosphate SAPP
II. Molecular Formula: Na₂H₂P₂O₇
III. Molecular Weight: 221.95
IV. Properties: White powder, relative density 1.86, soluble in water, insoluble in ethanol. Aqueous solution hydrolyzes to phosphoric acid when heated with dilute inorganic acid. Hygroscopic, forms hexahydrate upon water absorption. Decomposes to sodium metaphosphate when heated above 220°C.
V. Applications: Used as a leavening agent in baked goods to control fermentation rate; in instant noodles to shorten rehydration time without sticking or becoming mushy; in biscuits and pastries to reduce fermentation time, lower breakage rate, create uniform porous structure, and extend shelf life.
VI. Packaging: 25KG/BAG with inner plastic and outer woven bag.
VII. Storage: Store in a ventilated, dry area.