• HARSHA M
• Charan Kumar H C
• Chandrashekar
• Kumara M N

: In the present work the kinetic and mechanistic aspects of oxidation of Red 2G (food color additive) have been studied with the help of mild oxidizing agent chloramine-T (CAT) and chloramine-B (CAB) in acid medium at 301k. The reaction exhibited first-order dependence of rate with [CAT] and [R2G], inverse fractional order dependence of rate with [H+]. Solvent composition shows a negative effect indicating the involvement of negative ion-dipolar molecule in the rate-determining step. Variation of ionic strength of the medium and addition of halide ions had no effect on the reaction rate. Addition of p-toluene sulphonamide (PTS), the reduction product retards the rate of reaction. The oxidation products were characterized by LC-MS. Activation parameters have been evaluated from Arrhenius- Eyring plots. The observed results have been explained by plausible mechanism and related rate law have been deduced.

Red 2G, Chloramine-T, kinetics, Reaction mechanism, Oxidative decolorization

"OXIDATIVE DECOLORIZATION OF RED 2G BY CHLORAMINE-T AND CHLORAMINE-B IN ACID MEDIUM: COMPARATIVE MECHANISTIC ASPECTS AND KINETIC MODELING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 4, page no.d239-d254, April-2022, Available :http://www.jetir.org/papers/JETIR2204329.pdf

"OXIDATIVE DECOLORIZATION OF RED 2G BY CHLORAMINE-T AND CHLORAMINE-B IN ACID MEDIUM: COMPARATIVE MECHANISTIC ASPECTS AND KINETIC MODELING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 4, page no. ppd239-d254, April-2022, Available at : http://www.jetir.org/papers/JETIR2204329.pdf