Furosemide as an Environmental-Friendly Inhibitor of Corrosion of Zinc metal in Acid Medium: Experimental and Theoretical studies

The anticorrosion ability of Furosemide (4-chloro-2-(furan-2-ylmethylamino)-5-sulfamoylbenzoic acid). was tested on Zinc metal (ZM) in 2 M HCl media by a weight loss method at various concentrations. The results indicated that inhibition efficiencies were enhanced with an increase in concentration of Furosemide and it shows the highest inhibition efficiency of 81.32% at 300 ppm. The theoretical correlation of molecular structure and inhibition efficiency of Furosemide has been carried out by using semi-empirical Hamiltonian calculations based on Parametrized Model 3 (PM3).