Rajalakshmi, RPrithiba, A2017-02-142017-02-142012https://ir.avinuty.ac.in/handle/avu/1362The influence of stem extract of Hibiscus cannabimts on the corrosion of mild steel in 1 M HCl was measured by mass loss method and electrochemical techniques. Results obtained reveal that the stem extract of Hibiscus cannabinus act as an effective inhibitor for mild steel in the examined acidic media. Inhibition efficiency was found to increase with increase in concentration of the inhibitor but decrease with rise in temperature. The inhibitive effect could be attributed to the phytochemical constituents present in the inhibitor. The adsorption characteristics of the inhibitor were approximated by Langmuir adsorption isotherm and Temkin adsorption isotherm. Electrochemical measurements confirm mixed mode of inhibition.