The kinetics of the reaction between formaldehyde and hexacyanoferrate(II1) ion in alkaline medium has been investigated at four temperatures. The data show that the reaction is rapid initially, then follows a simple first order rate with respect to each of the hexacyanoferrate(II1) ion, formaldehyde, and hydroxide ion. Calculations reveal that only 0.27 % of the formaldehyde corresponds to the initial rapid reaction; the remaining 99.73 % follows the kinetics described. The net rate of the oxidation of formaldehyde as measured by the consumption of hexacyanoferrate(JI1) ion, is given by

Charge Transport and Dielectric Properties of Vanadium Oxide Catalyst.-Electrical conductivities and dielectric constants are measured as a function of temp. for four V2O5-K2SO4 catalysts of varying composition and an attempt to correlate the results with the catalytic activities of the catalysts for SO2 oxidation is made. Lower values of activation energy for conduction are shown to correlate with higher catalytic efficiency. -(SRIVASTAVA, S. C.; ANSARI, B. J.; CHAUDHARY, S. N.; GANGWAR, M. C.; MUKHERJEE, D. K.; Indian J.