METHOD OF MEASURING CONCENTRATION OF AVAILABLE CHLORINE IN AQUEOUS SODIUM CHLORIDE SOLUTION CONTAINING AVAILABLE CHLORINE

摘要

PROBLEM TO BE SOLVED: To safely measure an available chlorine concentration in an aqueous sodium chloride solution containing available chlorine by a simple operation.;SOLUTION: In this method for measuring the available chlorine concentration in the aqueous sodium chloride solution containing the available chlorine, 2,2'-azino-bis(3-ethyl benzothiazoline-6-sulfonic acid), or N, N-diethyl-1,4-phenylene diamine is added to the aqueous sodium chloride solution containing the available chlorine to measure the concentration of the available chlorine by a colorimetric method. The available chlorine means the chlorine existing in water of a type having oxidation power. A solution after absorbing gas containing chlorine into an aqueous sodium hydroxide solution is frequently used for the aqueous sodium chloride solution containing the available chlorine.;COPYRIGHT: (C)2004,JPO&NCIPI