Experimental study of a new furan-2-ylmethylene-hydrazide as a corrosion inhibitor in acidic media

Newly synthesized Furan-2-ylmethylsulfanyl-acetic acid (N-thiobenzoyl)-Hydrazide (FATH) was studied as Corrosion inhibitor for carbon steel (CS) in hydrochloric acid solution using potentiodynamic polarization. FATH is a good carbon steel inhibitor in 0.1 M HCl solution, according to the experimental results. With increasing inhibitor concentrations, the inhibition efficiency improved, reaching 99.9% at 600 ppm. Thermodynamic parameters for inhibitor adsorption on carbon steel were calculated and discussed. The inhibitors adsorption on the carbon steel surface followed the Langmuir adsorption isotherms.