International Scholarly Research Notices / 2013 / Article / Tab 7

Research Article

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

Table 7

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

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

Uninhibited1.261.91
Leaves
 0.120.8234.751.2833.94
 0.240.7639.211.1938.43
 0.360.6945.271.1440.31
 0.480.5258.530.8159.23
 0.600.3968.530.6764.60
Latex
 0.120.8235.191.2735.24
 0.240.7738.941.1539.47
 0.360.7244.320.9453.08
 0.480.5457.250.8357.73
 0.600.4068.530.7262.66
Fruit
 0.120.7938.891.3728.83
 0.240.7044.601.3132.37
 0.360.6449.011.1042.37
 0.480.4762.560.7860.63
 0.600.3573.580.5868.56