Studies on 3-Substituted-2-thiohydantoins as Analytical Reagent. II. Polarographic Investigation of Color Reaction of 3-Methyl-2-thiohydantoin

Abstract

Color reaction of 3-methyl-2-thiohydantoin (MTH) in alkaline solution was investigated by polarographic method. Hydrogen peroxide and bis (3-methyl-2-thiohydan-toinylidene-5) were confirmed in the autoxidation products of MTH and their apparent ratio was determined by this method. Effect of metal ions on the autoxidation of MTH was also studied and a reaction mechanism was proposed.