Sodium Acid Pyrophosphate(Food grade) (CF-SAP700) CAS No.: 7758-16-9 EINECS No.: 231-835-0 Model No.: CF-SAP700(Food grade) Molecular formula: Na2H2P2O7 Molecular weight: 221.95 Standards: HG2928-1999 Property: White power granular or powder, soluble in water, acidic property appeared in aqueous solution. Specification: Item: Value Na2H2P2O7 %: ≥95.0 PH value 3.5-4.5 Water insoluble %: ≤1.0 Heavy metal ( base on Pb ) %: ≤ 0.001 Arsenic ( base on As ) %: ≤0.0003 Fluoride ( base on F ) %: ≤0.005 Use: It acts as a buffer, leaven, modifier, emulsifier, nutrient and canning preservative in foods... Packing: 25kg woven bag with plastic liner.