Chemistry Department, University of Sagar, Sagar Manuscript received 1 August 1972; accepted 4 July 1975 Kinetics of the reaction between ethylenediamine and hydrogen peroxide have been studied in presence of sodium tungstate as catalyst. The total order of the reaction is found to be two, one each with respect to oxidant and reductant. The effect of concentration of catalyst, oxidant and reductant has been studied. The change of ionic strength has no appreciable effect on the reaction rate. The activation energy and the entropy of activation is found to be 4.7 Kcals and -58.2 E.U. respectively. The probable mechanism has been suggested.