International Scholarly Research Notices / 2013 / Article / Tab 3

Research Article

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

Table 3

Mass loss data for aluminium in 1.0 N sulfuric acid with ethanolic extract of leaves, latex, and fruit of Calotropis procera.

Inhibitor ConcentrationMass loss (gm)
Inhibition efficiency (%)Corrosion rate (mmpy)Surface coverage (θ)

Uninhibited246044.3
Leaves
 0.12124249.5122.30.4951
 0.2493561.9916.80.6199
 0.3672170.6912.90.7069
 0.4866373.0411.90.7304
 0.6054877.729.870.7772
Latex
 0.12126348.5822.70.4858
 0.2493162.1516.70.6215
 0.3674869.5913.40.6959
 0.4862574.5911.20.7459
 0.6052078.869.370.7886
Fruit
 0.12118651.7821.30.5178
 0.2495861.0517.20.6105
 0.3671271.0512.80.7105
 0.4864373.8611.50.7386
 0.6057476.6610.30.7666