A Study of the Cathode Reaction in Karl Fischer Coulometric Titration

Abstract

The cathode reaction in Karl Fischer coulometric titration is discussed. The cathodic reduction products varied depending on the electrolyte used. In the case of a catholyte which contained carbon tetrachloride, it was easily reduced to chloroform with the reduction products not interfering with water measurements. In case of any catholyte, some of the reduction products showed a potential for possible interference.