Corrosion Inhibition of Tin by Alkaloid Extract of Aerial Part of Phyllanthus niruri in different solutions of HNO3.

Abstract

The corrosion inhibition of Tin by extract of Phyllanthus nirurii in different solutions of HNO3 (1N, 2N, 3N) was investigated by weight loss and thermometric methods at 300K temperature. From the study, it was found that the inhibition efficiency increases with the increase in the concentration of extract of aerial part of the plant in HNO3 solutions. Results indicate that extract of Phyllanthus nirurii was an efficient natural corrosion inhibitor in acidic media. The leaf extract of the Phyllanthus nirurii is better corrosion inhibitor than stem and flower extract of the plant. Absorption of Phyllanthus nirurii depends on its chemical compositions which showed the presence of various compounds like alkaloids, flavonoids, steroids, tannins etc.