A catalytic method for the determination of acetonitrile

A kinetic method for the determination of micro quantities of acetonitrile, based on its catalytic activity on the oxidation of pyrocatechol violet by hydrogen peroxide, is presented. On the basis of the results obtained by kinetic investigations, a kinetic equation as well as the apparent rate constant of this reaction is given. Acetonitrile was determined by the application of the differential form of the tangent method in concentrations ranging from 1.52 × 10^?3M to 22.8 × 10^?3M, with relative standard deviation up to 6%.