1.0 2010-04-08 22:11:49 UTC 2025-11-19 00:54:43 UTC FDB015396 Sodium sulfite (Na2SO3) It is used as a sanitising agent for food containers and fermentation equipment, as a preservative to reduce or prevent microbial spoilage of food, as a selective inhibitor of undesirable microorganisms in the fermentation industries, and as an antioxidant and inhibitor of enzyme-catalysed oxidative discoloration and non-enzymic browning during prepn., storage and distribution of foods Anhydrous sodium sulfite Disodium sulfite Disodium sulfite (Na2SO3) E221 Exsiccated sodium sulfite NatrII sulphis Natrium sulfurosum Natriumsulfid Natriumsulfit S-wat Sodium sulfite Sodium sulfite (2:1) Sodium sulfite anhydrous Sodium sulfite, exsiccated Sodium sulphite Sulftech Sulfurous acid disodium salt, 8CI Sulfurous acid, disodium salt Sulfurous acid, sodium salt (1:2) Na2O3S 126.043 125.936353906 disodium sulfite disodium sulfite 7757-83-7 [Na+].[Na+].[O-]S([O-])=O InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 GEHJYWRUCIMESM-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 sodium salts Alkali metal sulfite Inorganic oxide Inorganic salt Inorganic sodium salt inorganic sodium salt sulfite salt logp -1.2 ChemAxon pka_strongest_acidic -3.7 ChemAxon iupac disodium sulfite ChemAxon average_mass 126.043 ChemAxon mono_mass 125.936353906 ChemAxon smiles [Na+].[Na+].[O-]S([O-])=O ChemAxon formula Na2O3S ChemAxon inchi InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 ChemAxon inchikey GEHJYWRUCIMESM-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 1302943 Specdb::MsMs 1302944 Specdb::MsMs 1302945