1.0 2010-04-08 22:10:41 UTC 2025-11-18 23:44:06 UTC FDB013381 Potassium diphosphate (K4(P2O7)) It is used in foods as a buffering agent, pH control agent, alkalinity source, dispersing agent, protein modifier, coagulant, sequestrant and nutrient source Diphosphoric acid, potassium salt Diphosphoric acid, potassium salt (1:4) Diphosphoric acid, tetrapotassium salt Potassium diphosphate Potassium pyrophosphate Pyrophosphoric acid, tetrapotassium salt Tetrapotassium diphosphate Tetrapotassium diphosphate, 9CI Tetrapotassium diphosphorate Tetrapotassium pyrophosphate Tetrapotassium pyrophosphate, 8CI TKPP K4O7P2 330.3365 329.766752822 tetrapotassium (phosphonatooxy)phosphonate tetrapotassium diphosphate 7320-34-5 [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O InChI=1S/4K.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4 RYCLIXPGLDDLTM-UHFFFAOYSA-J belongs to the class of inorganic compounds known as alkali metal pyrophosphates. These are inorganic compounds in which the largest oxoanion is pyrophosphate, and in which the heaviest atom not in an oxoanion is an alkali metal. Alkali metal pyrophosphates Inorganic compounds Mixed metal/non-metal compounds Alkali metal oxoanionic compounds Alkali metal pyrophosphates Inorganic oxides Inorganic salts Alkali metal pyrophosphate Inorganic oxide Inorganic salt logp -1.4 ChemAxon pka_strongest_acidic 1.7 ChemAxon iupac tetrapotassium (phosphonatooxy)phosphonate ChemAxon average_mass 330.3365 ChemAxon mono_mass 329.766752822 ChemAxon smiles [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O ChemAxon formula K4O7P2 ChemAxon inchi InChI=1S/4K.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4 ChemAxon inchikey RYCLIXPGLDDLTM-UHFFFAOYSA-J ChemAxon polar_surface_area 135.61 ChemAxon refractivity 21.04 ChemAxon polarizability 9.03 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 6 ChemAxon donor_count 0 ChemAxon physiological_charge -3 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1302814 Specdb::MsMs 1302815 Specdb::MsMs 1302816