KOH in ethanol byproducts: potassium 2,4-dimethylbenzenesulfonate; Bi compd. treated with a soln. of KOH in EtOH, reacted for 24 h, solvent-removed, extd. (EtOH), treated with HCl in EtOH;

in water; acetone byproducts: sodium 2,4-dimethylbenzenesulfonate; a soln. of NaOAc in H2O added to a soln. of Bi compd. in acetone; filtered, dried, extd. (petroleum ether and H2O); the water-insol. ppt. recrystd. (toluene);