Table of Contents
ISRN Corrosion
Volume 2013, Article ID 476170, 9 pages
Research Article

Corrosion Inhibition and Adsorption Properties of Ethanolic Extract of Calotropis for Corrosion of Aluminium in Acidic Media

Department of Pure and Applied Chemistry, Maharshi Dayanand Saraswati University, C-698, Panchsheel Nagar, Ajmer, Rajasthan 305009, India

Received 24 December 2012; Accepted 15 January 2013

Academic Editors: N. Boshkov, C. Gervasi, and Q. Qu

Copyright © 2013 Sudesh Kumar and Suraj Prakash Mathur. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The corrosion inhibition of aluminium in sulfuric acid solution in the presence of different plant parts, namely, leaves, latex, and fruit was studied using weight loss method and thermometric method. The ethanolic extracts of Calotropis procera and Calotropis gigantea act as an inhibitor in the acid environment. The inhibition efficiency increases with increase in inhibitor concentration. The plant parts inhibit aluminium, and inhibition is attributed, due to the adsorption of the plant part on the surface of aluminium.