International Scholarly Research Notices / 2013 / Article / Tab 6

Research Article

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

Table 6

Thermometric reaction for aluminium in 4 N and 5 N sulphuric acid with ethanolic extract of leaves, latex, and fruit of Ccalotropis procera.

Inhibitor
concentration
Reaction
number (RN) 4 N
Inhibition
efficiency (%)
Reaction
number (RN) 5 N
Inhibition
efficiency (%)

Uninhibited2.483.10
Leaves
 0.121.5836.362.2726.83
 0.241.5537.372.0533.86
 0.361.5039.381.9238.11
 0.481.0258.611.6048.32
 0.600.8963.871.2061.15
Latex
 0.121.4641.192.4221.84
 0.241.4043.642.1131.89
 0.361.2649.122.0832.89
 0.481.1254.871.8440.56
 0.600.9461.831.4852.19
Fruit
 0.121.4441.952.0932.57
 0.241.3244.011.9437.31
 0.361.2250.801.8739.47
 0.481.0159.171.5350.48
 0.600.8167.331.1861.95