Accelerated oxidation of cotton cellulose in presence of reducing substances-I

Abstract

(1) The measurement of oxidation potential of dilute solutions of sodium hypochlorite has been carried out at 30°C. by a method used successfully by various investigators. (2) The values of the oxidation potential at 30°C. are higher than those at 20°C. The differences in the potentials become more and more marked with reduction in the pH of the hypochlorite solution. (3) A correction of pH×0.06 volts to the measured potentials at 30°C. does not show any maximum value over the pH region examined. A sharp change in the direction of pH-corrected oxidation potential curve, however, occurs at about the same pH at which a maximum is obtained at 20°C. (4) There exists no similarity between the corrected oxidation potential-pH curve at 30°C. and a curve showing relation between oxygen uptake or fluidity and pH at 30°C. Nabar, Scholefield and Turner had shown a striking resemblance between these curves at 20°C.