1.0 2010-04-08 22:10:38 UTC 2025-11-18 23:43:25 UTC FDB013311 Potassium hydrogen sulfate (KHSO4) Food additive (seasoning); acidity regulator Acid potassium sulfate E515? Monopotassium hydrogen sulfate Monopotassium sulfate Potassium acid sulfate Potassium bisulfate Potassium bisulphate Potassium hydrogen sulfate Potassium hydrogen sulfate [UN2509] [Corrosive] Potassium hydrogen sulfate, solid Potassium hydrogensulphate Potassium hydrosulfate (KHSO4) Potassium sulfate (KHSO4) Potassium sulfate, KHSO4 Sal enixum Sulfuric acid monopotassium salt Sulfuric acid potassium salt (1:1) Sulfuric acid, monopotassium salt Sulfuric acid, monopotassium salt, 8CI Sulfuric acid, potassium salt (1:1) HKO4S 136.169 135.923261071 potassium hydrogen sulfate potassium hydrogen sulfate 7646-93-7 [K+].OS([O-])(=O)=O InChI=1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1 CHKVPAROMQMJNQ-UHFFFAOYSA-M belongs to the class of inorganic compounds known as alkali metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is an alkali metal. Alkali metal sulfates Inorganic compounds Mixed metal/non-metal compounds Alkali metal oxoanionic compounds Alkali metal sulfates Inorganic oxides Inorganic salts Alkali metal sulfate Inorganic oxide Inorganic salt melting_point Mp 214° logp -0.84 ChemAxon pka_strongest_acidic -3 ChemAxon iupac potassium hydrogen sulfate ChemAxon average_mass 136.169 ChemAxon mono_mass 135.923261071 ChemAxon smiles [K+].OS([O-])(=O)=O ChemAxon formula HKO4S ChemAxon inchi InChI=1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1 ChemAxon inchikey CHKVPAROMQMJNQ-UHFFFAOYSA-M ChemAxon polar_surface_area 77.43 ChemAxon refractivity 12.65 ChemAxon polarizability 6.16 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 4 ChemAxon donor_count 1 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1293415 Specdb::MsMs 1293416 Specdb::MsMs 1293417 Specdb::MsMs 1408099 Specdb::MsMs 1408100 Specdb::MsMs 1408101