International Scholarly Research Notices / 2013 / Article / Tab 1

Research Article

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

Table 1

Mass loss data for aluminium in 0.5 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)

Uninhibited184033.1
Leaves
 0.12101245.0018.20.4500
 0.2487252.6015.70.5260
 0.3665364.5111.70.6451
 0.4848773.538.770.7353
 0.6034881.086.270.8108
Latex
 0.1298746.3517.70.4635
 0.2485653.4715.40.5347
 0.3664165.1611.50.6516
 0.4846574.729.430.7472
 0.6031382.985.640.8298
Fruit
 0.12102644.2318.40.4423
 0.2489851.1916.10.5119
 0.3667463.3612.10.6336
 0.4846574.728.380.7472
 0.6033881.636.090.8163