1.0 2010-04-08 22:11:51 UTC 2025-11-19 00:55:10 UTC FDB015441 Sodium alum Food additive in baking powder, firming agent, buffer. May migrate to food from paper/board packaging Alum, porous Alum, sodium Aluminum sodium disulfate dodecahydrate Aluminum sodium sulfate Aluminum sodium sulfate (AlNa(SO4)2) dodecahydrate g-Alum Hexaaquaaluminium hexaaquasodium sulfate (1:1:2) Monoaluminum monosodium disulfate dodecahydrate Soda alum Sodium alum Sodium aluminum sulfate Sodium aluminum sulfate dodecahydrate Sodium aluminum sulfate dodecahydrate (NaAl(SO4)2.12H2O) Sulfuric acid, aluminum sodium salt (2:1:1), dodecahydrate AlH24NaO20S2 458.28 458.001542704 aluminium(3+) ion sodium dodecahydrate disulfate aluminium(3+) ion sodium dodecahydrate disulfate 7784-28-3 O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O InChI=1S/Al.Na.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4 ZEMWIYASLJTEHQ-UHFFFAOYSA-J belongs to the class of inorganic compounds known as post-transition metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is a post-transition metal. Post-transition metal sulfates Inorganic compounds Mixed metal/non-metal compounds Post-transition metal oxoanionic compounds Post-transition metal sulfates Inorganic oxides Inorganic sodium salts Post-transition metal salts Inorganic oxide Inorganic post-transition metal salt Inorganic salt Inorganic sodium salt Post-transition metal sulfate melting_point Mp 61° logp -0.84 ChemAxon pka_strongest_acidic -3 ChemAxon iupac aluminium(3+) ion sodium dodecahydrate disulfate ChemAxon average_mass 458.28 ChemAxon mono_mass 458.001542704 ChemAxon smiles O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ChemAxon formula AlH24NaO20S2 ChemAxon inchi InChI=1S/Al.Na.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4 ChemAxon inchikey ZEMWIYASLJTEHQ-UHFFFAOYSA-J ChemAxon polar_surface_area 80.26 ChemAxon refractivity 11.53 ChemAxon polarizability 5.81 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 4 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon