The coulometric microdetermination of iodide after oxygen flask combustion of organic iodine compounds. The use of lodate, biiodate, and iodide as primary standards

Abstract

Under the conditions presented, potassium iodate, hiiodate, and iodide can satisfactorily replace NBS 2-iodobenzoic acid, which is no longer available, as a standard source of iodide for determining the coulometric iodide titration constant. Use of these inorganic compounds as primary iodide standards increases the speed and simplicity of the coulometric titration finish to the oxygen flask combustion method for microanalytical determination of iodine without loss of precision or accuracy. Potassium iodate is the preferred replacement.