1.0 2010-04-08 22:11:50 UTC 2025-11-19 00:55:02 UTC FDB015430 Potassium disulfite Food additive; preservative. Not permitted for meats, food sources of vitamin B1 or fresh fruit or vegetables Dipotassium disulfite Dipotassium disulphite Dipotassium metabisulfite Dipotassium oxidosulfanesulfonate oxide Dipotassium pyrosulfite Disulfurous acid dipotassium salt, 9CI Disulfurous acid, dipotassium salt Disulfurous acid, potassium salt (1:2) E224 Potassium disulfate(IV) Potassium disulfite (K2S2O5) Potassium hypothionate Potassium metabisulfite Potassium metabisulfite (NF) Potassium pyrosulfite Pyrosulfurous acid dipotassium salt, 8CI Pyrosulfurous acid, dipotassium salt Sulfite, potassium metabi- K2O5S2 222.324 221.846128212 dipotassium (sulfinatooxy)sulfinate dipotassium sulfinatooxysulfinate 16731-55-8 [K+].[K+].[O-]S(=O)OS([O-])=O InChI=1S/2K.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2 QVOMDXSQDOBBMW-UHFFFAOYSA-L belongs to the class of inorganic compounds known as alkali metal sulfites. These are inorganic compounds in which the largest oxoanion is sulfite, and in which the heaviest atom not in an oxoanion is an alkali metal. Alkali metal sulfites Inorganic compounds Mixed metal/non-metal compounds Alkali metal oxoanionic compounds Alkali metal sulfites Inorganic oxides Inorganic salts Alkali metal sulfite Inorganic oxide Inorganic salt logp -1.3 ChemAxon pka_strongest_acidic -4.3 ChemAxon iupac dipotassium (sulfinatooxy)sulfinate ChemAxon average_mass 222.324 ChemAxon mono_mass 221.846128212 ChemAxon smiles [K+].[K+].[O-]S(=O)OS([O-])=O ChemAxon formula K2O5S2 ChemAxon inchi InChI=1S/2K.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2 ChemAxon inchikey QVOMDXSQDOBBMW-UHFFFAOYSA-L ChemAxon polar_surface_area 89.49 ChemAxon refractivity 18.63 ChemAxon polarizability 9.27 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 4 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1303192 Specdb::MsMs 1303193 Specdb::MsMs 1303194