Sodium pyrophosphate anhydrous product Name: Sodium pyrophosphate anhydrous Synonyms: Sodium pyrophosphate; Tetrasodium pyrophosphate; TSPP; Tetra Sodium Pyrophosphate; Tetrasodium Diphosohate Molecular Formula: Na4P2O7 Molecular Weight: 265.9 CAS Registry Number: 7722-88-5 EINECS: 231-767-1 Packing:25kg/drum Assay:98% Price:$1.4/kg