International Scholarly Research Notices / 2013 / Article / Tab 5

Research Article

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

Table 5

Thermometric reaction for aluminium in 2 N and 3 N sulphuric acid with ethanolic extract of leaves, latex, and fruit of Calotropis procera.

Inhibitor
concentration
Reaction
number (RN) 2 N
Inhibition
efficiency (%)
Reaction
number (RN) 3 N
Inhibition
efficiency (%)

Uninhibited1.261.91
Leaves
 0.120.8135.6512733.63
 0.240.7639.211.2037.13
 0.360.7044.271.1539.69
 0.480.5159.530.8058.07
 0.600.4067.830.6764.60
Latex
 0.120.8334.151.2634.05
 0.240.7837.941.2534.67
 0.360.7143.320.9550.08
 0.480.5457.150.8451.33
 0.600.4167.430.7662.66
Fruit
 0.120.7838.021.3827.83
 0.240.7143.401.3231.07
 0.360.6449.011.1141.67
 0.480.4861.340.7560.63
 0.600.3472.960.5969.03