1.0 2010-04-08 22:11:51 UTC 2015-07-20 23:18:27 UTC FDB015457 Potassium tetraborate Listed in the EAFUS Food Additive Database (Jan. 2001) Boric acid (H2B4O7) dipotassium salt , 9CI, 8CI Boron potassium oxide (B4K2O7), 11CI, 10CI Dipotassium borate (B4O72(-)) Potassium biborate Potassium borate B4K2O7 233.436 233.92903794 dipotassium oxoboranyl [(oxoboranyl boronato)oxy]boronate dipotassium oxoboranyl (oxoboranyl boronato)oxyboronate 1332-77-0 [K+].[K+].[O-]B(OB=O)OB([O-])OB=O InChI=1S/B4O7.2K/c5-1-9-3(7)11-4(8)10-2-6;;/q-2;2*+1 ANMPYCUUTKQHJW-UHFFFAOYSA-N belongs to the class of inorganic compounds known as alkali metal borates. These are inorganic compounds in which the largest oxoanion is borate, and in which the heaviest atom not in an oxoanion is an alkali metal. Alkali metal borates Inorganic compounds Mixed metal/non-metal compounds Alkali metal oxoanionic compounds Alkali metal borates Inorganic oxides Inorganic salts Metalloid salts Miscellaneous borates Alkali metal borate Borate Inorganic metalloid salt Inorganic oxide Inorganic salt melting_point Mp 815° logp 3.44 ChemAxon pka_strongest_acidic 8.19 ChemAxon pka_strongest_basic -5.4 ChemAxon iupac dipotassium oxoboranyl [(oxoboranyl boronato)oxy]boronate ChemAxon average_mass 233.436 ChemAxon mono_mass 233.92903794 ChemAxon smiles [K+].[K+].[O-]B(OB=O)OB([O-])OB=O ChemAxon formula B4K2O7 ChemAxon inchi InChI=1S/B4O7.2K/c5-1-9-3(7)11-4(8)10-2-6;;/q-2;2*+1 ChemAxon inchikey ANMPYCUUTKQHJW-UHFFFAOYSA-N ChemAxon polar_surface_area 107.95 ChemAxon refractivity 9.82 ChemAxon polarizability 12.42 ChemAxon rotatable_bond_count 6 ChemAxon acceptor_count 5 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1332730 Specdb::MsMs 1332731 Specdb::MsMs 1332732