The inhibition of corrosion behaviour of carbon steel in Well water has been studied
by the anticorrosion behaviour of the natural Jeera dye (JD) and ZnSO4 system. Results Obtained
by Weight loss study shows 98% Maximum Inhibition efficiency at 10 ml of Jeera dye Extract and
50ppm of ZnSO4. Synergistic parameters suggest that a synergistic effect existing between Jeera
dye extract and Zn2+.Statistical study of “F” test also revealed this effect. The Surface analysis was
performed by Scanning electron microscope technique ( SEM )which was confirmed , the existence
of an inhibitor molecules on the metal surface .FTIR Spectra revealed that the protective film
consist of a complex formed between the active principle of the Jeera dye extract and Zn2+.
