Amodiaquine drug as a corrosion inhibitor for mild steel in 0.1M HCl solution

Chem. Met. Alloys 7 (2014) 149-153

https://doi.org/10.30970/cma7.0274

I.A. Akpan, N.O. Offiong

The inhibition effect of an environmentally friendly and cost-effective drug, amodiaquine, on the corrosion of mild steel in an acidic medium was studied by the weight loss method at room temperature. The study revealed that the test drug has an inhibitory action on the corrosion of mild steel in the investigated medium. The inhibition efficiency was found to increase with increasing inhibitor concentration. Plots of the concentration of metal versus time indicate first-order kinetics for the inhibition process. It was also found that amodiaquine adsorbs according to a Langmuir’s adsorption isotherm. Attempts were made to correlate the chemical structure and the inhibition mechanism.

Chemical structure of amodiaquine

Keywords

Corrosion inhibitor / Mild steel / Amodiaquine drug / Weight loss method