EVALUATION OF EXPIRED AUGMENTINE DRUGS AS CORROSION INHIITOR FOR CARBON STEEL ALLOY IN 1.0 N HCl ACIDIC ENVIRONMENT USING ANALYTICAL TECHNIQUES

Augmentin is a chemical mixture component medicine (co medicine) known as co-amoxiclav and it is a famous antibiotic used for treatment of a number of bacterial infections, it is so dangerous to be left in the environment after its expired as it is harmful to the child's, so the present work introduces an idea for using it in the expired form as potential non-toxic (green ) corrosion inhibitor for steel in 1.0 N HCl. Five analytical techniques were used to evaluate the inhibition performance of the expired co-amoiclav drugs namely gravimetric, atomic absorption spectroscopy(AAS), thermometric, gasometric, and acidimetric technique. Effect of expired drug dose, reaction temperature, and pH were studied. The corrosion inhibition was increased with increasing the concentration and decreased with rising the temperature and by lowering the pH values of the medium. The maximum inhibition is (97.8 % at 300 ppm. The used techniques are in good agreement to each other's (±2 %) indicating the possibility of the using of the expired Augmentin drugs as potential nontoxic green corrosion inhibitor for steel in an industrial field like steel used for application in petroleum industry at lower pH.