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Rapid Kinetics of Chlorination of Thiophene in Aqueous Medium Using Rotating Platinum Electrode

Author Affiliations

  • 1Department of Chemistry, Nowrosjee Wadia College, Pune, INDIA

Res.J.chem.sci., Volume 2, Issue (7), Pages 75-78, July,18 (2012)


The rapid kinetics of the chlorination of thiophene in aqueous solution by molecular chlorine at 7 pH has been studied using the rotating platinum electrode RPE. The specific reaction rate, energy of activation Ea and the pre-exponential factor A, are evaluated. The reaction was found to be rapid and of the second order with a half- life of 24 s at 24.5oC. The rapidity of the reaction necessitated a special technique RPE,to measure the unreacted chlorine which is the only electroreducible species in the reaction. The studies are aimed at complementing quantitative data for chlorinations of aromatic substrates in aqueous medium in view of possible carcinogens formed during disinfection of drinking waters.


  1. Rule K.L., Ebbett V.R. and Vikes and P.J., Formation of Chloroform and Chlorinated Organics by free –Chlorine- Mediated Oxidation of Triclosan., Environ. Sc. and Technol., 39(9) 3176-3185 (2005)
  2. Ketola A.R., Kotiaho T., Cisper M.E. and Allen T.M., Environmental Applications of Membrane Introduced Mass Spectrometry, J.Mass Spectrometry, 37, 457-476 (2002)
  3. Marino G., A Quantitative Study of the Uncatalysed Halogenation of Thiophene in acetic acid solution, Tetrahedron, 21(4), 843-848 (1965)
  4. Dangat V.T., Bonde S.L. and Rohokale G.Y., Bromination of p-Acetotoluidide in Aqueous Medium: Substituent Effect, Ind. Journ.Chem., 23A, 237-238 (1984)
  5. Res.J.Chem.Sci International Science Congress Association 78 5. Dangat V.T., Bonde S.L., Gayakhe A.S. and Ghorpade B.S., Kinetics of Iodination of Aniline and Anthranilic Acid by Iodine in Aqueous Medium, Ind.Journ.Chem, 28A, 321-322 (1989)
  6. Rao T.S., Mali S.I. and Dangat V.T., Kinetics of a Rapid Chlorination Reaction by the Use of RPE, J.Uni.Poona Sc. Tech., 52, 111-114 (1979)
  7. Rao T.S., Jukar R.N., and Dangat V.T., A Catalytic Effect of the Cl- ion on the Kinetics of Chlorination of Aromatic Substrates by Cl2 in Aqueous Solution, Current Science, 55(10), 483 (1986)
  8. Babalola O.O., Ojo O.E. and Oloyede F.A., Hepatoprotective Activity of Aqueous Extract of the Leaves of Hyptissuaveolens (l.) poit on Acetaaminophenone Induced Hepatotoxicity in Rabbits, Res. J. Chem. Sci., 1(7), 85-88 (2011)
  9. Medjor O.W., Egharevba F., Akpoveta O.V., Ize-lyamu O.K. and Jatto E.O., Kinetic Studies of Bioremediation of Hydrocarbon Contaminated Water, Res. J. Chem. Sci., 2(1), 38-44 (2012)
  10. Rao T.S., Mali S.I., and Dangat V.T., The Halogenating Agent in Hypohalous Acid Solutions Containing H+(aq) in Aromatic Substitutions, Tetrahedron, 34, 205 (1978)