1.0 2010-04-08 22:11:49 UTC 2025-11-19 00:54:48 UTC FDB015405 Potassium sulfite (K2SO3) Food additive listed in the EAFUS Food Additive Database (Jan. 2001) 1,4-Butanedithiol 1,4-Dimercaptobutane Dipotassium sulfite Potassium sulfite Potassium sulphite Sulfurous acid dipotassium salt, 8CI Sulfurous acid, dipotassium salt Sulfurous acid, potassium salt Sulfurous acid, potassium salt (1:2) Tetramethylene dimercaptan K2O3S 158.26 157.884228278 dipotassium sulfite dipotassium sulfite 10117-38-1 [K+].[K+].[O-]S([O-])=O InChI=1S/2K.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 BHZRJJOHZFYXTO-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 -1.2 ChemAxon pka_strongest_acidic -3.7 ChemAxon iupac dipotassium sulfite ChemAxon average_mass 158.26 ChemAxon mono_mass 157.884228278 ChemAxon smiles [K+].[K+].[O-]S([O-])=O ChemAxon formula K2O3S ChemAxon inchi InChI=1S/2K.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 ChemAxon inchikey BHZRJJOHZFYXTO-UHFFFAOYSA-L ChemAxon polar_surface_area 63.19 ChemAxon refractivity 10.08 ChemAxon polarizability 5.1 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 3 ChemAxon donor_count 0 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1305124 Specdb::MsMs 1305125 Specdb::MsMs 1305126 odorless