Synthesis, Characterization and Evaluation of 1, 3-bis ((2-aminopropyl) amino) methyl)-5-methylimidazolidine-2, 4-dione (BAMMD) as corrosion inhibitor for carbon steel and Brass alloys in0.2M NaCl.

3-bis ((2-aminopropyl) amino) methyl)-5-methylimidazolidine-2,4-dione (BAMMD) was synthesized and characterized by FTIR and NMR techniques then studied as corrosion inhibitor for carbon steel and brass alloys at 0.2M sodium chloride. The optimal concentration of BAMMD is 50ppm, which give an efficiency about 64.64% in case of carbon steel alloy while in case of brass is 84.75% at same concentration of the mentioned inhibitor at constant temperature 25 ºC. The effect of temperatures on its ability as corrosion inhibitors against NaCl was studied at ranged (25-55) ºC where, the inhibitor where, in both cases of the two alloys as the temperature increased, the inhibition efficiency increased from 64.64% at 25 ºC to 90.35% at 55 ºC for carbon steel alloy and from 84.75% at 25 ºC to 89.24% at 55 ºC. The thermodynamic and kinetic studies is done where the thermodynamic study is applied for the inhibitor then the results insist that the inhibitor obeyed to Timken isotherm in case of carbon steel alloy while obeyed to Langmuir isotherm in case of brass alloy where, BAMMD depict a chemical adsorption mode for the reaction with each one of the two alloys. On the other hand, BAMMD explain an anodic inhibition behavior. Generally the data of the study of corrosion behavior reveal that brass alloy is more resistance than carbon steel alloy whether in absence or in presence of BAMMD.