Disodium dihydrogen pyrophosphate CAS 7758-16-9 SAPP (Sodium Acid Pyrophosphate) is an inorganic compound with the chemical formula of Na2H2P2O7. It is a white crystalline powder, soluble in water and insoluble in ethanol. It is mainly used as a fast starter, a water retention agent, a quality improver, and as a baking food and meat such as bread and biscuits.
Essential information
Chemical formula: Na2H2P2O7
Molecular weight: 221.939
CAS No.: 7758-16-9
EINECS No. 231-835-0
Physical and chemical properties
Density: 2.311g/cm3
Melting point: 988 ℃
Appearance: white crystalline powder
Solubility: soluble in water, insoluble in ethanol.