International Scholarly Research Notices / 2013 / Article / Tab 8

Research Article

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

Table 8

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

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

Uninhibited2.483.10
Leaves
 0.121.5737.432.2428.83
 0.241.5438.372.0335.33
 0.361.4841.471.9537.21
 0.481.0159.611.6650.48
 0.600.8864.871.2260.75
Latex
 0.121.4842.192.3625.21
 0.241.3745.342.1431.37
 0.361.2450.522.0832.89
 0.481.0956.541.8242.56
 0.600.9162.831.4653.19
Fruit
 0.121.4341.772.1032.57
 0.241.3344.811.9537.22
 0.361.2151.831.8143.39
 0.481.0658.171.5551.43
 0.600.8267.051.1762.26