Abstract

Ru(III) CATALYZED OXIDATION OF PARACETAMOL BY CHLORAMINE-T IN AQUEOUS ALKALINE MEDIUM- A KINETIC AND MECHANISTIC STUDY

Amrita Srivastava* and Neha Agarwal

Abstract

The oxidation kinetics of paracetamol by chloramine-T in NaOH medium has been studied at 313K. The reaction had shown first order dependence on CAT and Ru(III). First order dependence on Paracetamol at its low concentrations but tending towards zero order at its higher concentrations. The reaction showed negative fractional order w.r.t [OH-]. The rate of reaction decreased with decreasing dielectric constant of the medium which was done by adding CH3COOH. Variation of chloride ion, mercuric acetate and ionic strength did not bring any significant change on the rate. The oxidation product had been identified by FTIR spectroscopic techniques. Thermodynamic parameters were computed by performing the kinetic runs at various temperatures. A mechanism consistent with observed parameters is proposed and rate law is derived.

Keywords: Paracetamol, Ru(III)Chloride, Chloramine-T, Kinetics, Oxidation.