Lead metaborate (Pb(BO2)2)14720-53-7100 % similar Lithium metaborate13453-69-560 % similar Barium borate13701-59-260 % similar Calcium metaborate13701-64-960 % similar Sodium metaborate7775-19-160 % similar Sodium metaborate tetrahydrate10555-76-750 % similar