Abstract
KINETIC STUDY OF OXIDATION OF NICOTINIC ACID (VITAMIN-B3) BY SODIUM N-CHLORO BENZENE SULPHONAMIDE (CHLORAMINE-B) IN HYDROCHLORIC ACID MEDIUM

R. T. Radhika, Ravi J. D. Saldanha, V. R. Kattimani and B. M. Venkatesha*

ABSTRACT

Kinetic and mechanistic investigation of Nicotinic acid [Vitamin-B3] using chloramine-B as oxidant in hydrochloric acid medium has been studied at 303 K. Reaction shows a first order dependence of the rate on oxidant [CAB] and Nicotinic acid concentration, and inverse fractional order in concentration of hydrochloric acid. The reaction rate shows inverse fractional order on reduction product of chloramine-B, benzenesulphonamide concentration. Addition of chloride ion, variation of ionic strength and dielectric constant of the medium do not have any significant effect on the rate of the reaction. The activation parameters of the reaction have been computed from the Arrhenius plot. A derived rate law and mechanisms consistent with obtained experimental results.

Keywords: Vitamin-B3, Chloramine-B, Hydrochloric acid medium, Oxidation Kinetic study.


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