Aqueous Extract of Kalmegh (<i>Andrographis paniculata</i>) Leaves as Green Inhibitor for Mild Steel in Hydrochloric Acid Solution

<table>Structure of main constituents of Kalmegh (<i>Andrographis paniculata</i>) extracts (a) <a href="http://en.wikipedia.org/wiki/Andrographolide">Andrographolide</a>.</table>

International Journal of Corrosion

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Figure 7

Figure 7: Aqueous Extract of Kalmegh (<i>Andrographis paniculata</i>) Leaves as Green Inhibitor for Mild Steel in Hydrochloric Acid Solution 

International Journal of Corrosion

Aqueous Extract of Kalmegh (Andrographis paniculata) Leaves as Green Inhibitor for Mild Steel in Hydrochloric Acid Solution

Figure 7