Steel are present with very high percentages in industrial sectors such as (technological industry, construction sectors), despite a large amount of steel is destroyed by corrosion in harsh environments especially in acidic environments. Corrosion therefore affects most industries and can cost billions of dollars each year at an economical level. So, stopping or at least slowing this damage became mandatory. Quinoxalines proved to be a good corrosion inhibitor of mild steel in acid media. Therefore, keeping an eye on the industrial and environmental scenarios, the first chapter for our Book deals with the synthesis of newly 8-hydroxyquinoline derivatives namely and characterized by 1H and 13C NMR Nuclear Magnetic Resonance spectroscopy. Their inhibition performance was studied against the corrosion of mild steel in hydrochloric acid by a chemical and electrochemical techniques. It was found that the studied compounds exhibit a very good performance as inhibitors for mild steel corrosion in hydrochloric acid medium. It has been determined that the adsorption for the studied inhibitors on mild steel and also Scanning electron microscopy was performed and discussed for steel surface.

MOHAMED RBAA is a PhD. in organic chemistry (Ibn Tofail Univ). YOUNES El KACIMI, is a PhD in electrochemistry and analytical chemistry.Professor BRAHIM LAKHRISSI, is Professor of Organic Chemistry and head of chemistry department. Their careers in chemistry was chiefly devoted to synthesis of novel organic compounds and its practical application.