Schiff’s bases as inhibitors of mild steel corrosion in hydrochloric acid

Mass loss and thermometric methods are used to study the inhibition of corrosion of mild steel in hydrochloric acid by Schiff’s bases N-(furfurlidine)-4-methoxy aniline, N-(furfurlidine)-4-methylaniline, N-(salicylidine)-4-methoxy aniline, N-(cinnamalidine)-4-methoxy aniline, and N-(cinnamalidine)-2-methylaniline. Results of inhibition efficiency yielded by the two methods are in good agreement and depend on the inhibitor and acid concentration. Maximum inhibition efficiency is 98%. The efficiency increases with the inhibitor concentration and acid strength. Published in Russian in Elektrokhimiya, 2007, Vol. 43, No. 2, pp. 252–256. The text was submitted by the authors in English.