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Abstract
Palin's titrimetric method for the analysis of chlorine in aqueous chlorine dioxide solutions was found to give low chlorine dioxide and high and variable chlorine estimations. It was determined that glycine, used in the titration for chlorine removal, was reacting with the chlorine dioxide during the titration. Replacement of glycine by oxalic acid gave reproducible and accurate chlorine and chlorine dioxide values. In solutions containing 3.5 to 15 mg of chlorine dioxide, chlorine (0.1 to 0.3 mg) could be determined with a standard deviation of 0.01 mg.