Inhibitive action of Leptadenia pyrotechnica extract on the corrosion of Mild Steel in H2SO4 solution

Gajendra Singh, S. K. Arora, Amerendra Tripathy, Meena Dochania


Inhibitive action on corrosion of mild steel in acidic media has been studied using Mass Loss Technique and Thermometric Method. Corrosion of mild steel in H2SO4 solution can be effectively inhibited by addition of extract of Leptadenia pyrotechnica as green corrosion inhibitor. The results indicate that all the extracts inhibited the corrosion process in acid media by virtue of adsorption and inhibition efficiency improved with inhibitor concentration. The highest inhibition efficiency was found upto 87.04% in 1.0N H2SO4 with 0.8% extract. It is concluded that Leptadenia pyrotechnica is an effective corrosion inhibitor and can safely be used as green corrosion inhibitor without any toxic effect.


Corrosion; Mild steel; Leptadenia pyrotechnica; Inhibition efficiency; Mass Loss Technique; Thermometric Method

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