This work investigates the effect of operating parameters oil corrosion products, reaction pathways, and kinetics For the corrosion of carbon steel in the monoethanolamine-H2O-CO2-O-2-SO2 system. Corrosion experiments were conducted using a 273A potentiostat unit under conditions in which rnonoethanolamine (MEA), O-2, and SO2 concentrations and CO2 loading were in the range of 1-7 kmol/m(3), 0-100%, 0-204 ppm, and 0-0.5 mol CO2/rnol MEA, respectively, at corrosion temperatures of 303-353 K to mimic the absorption-regeneration sections. Analysis, performed for this system for the first time, shows that corrosion products generated from the effect of SO2 include FeSO4 and Fe2O3 center dot H2O. Also, a higher concentration of SO2 in simulated flue gas stream induces a higher corrosion rate because of the increase in the hydrogen ion concentration generated by reactions of SO2 and H2O as well as SO2, O-2, and H2O. A power-law model developed to correlate corrosion rate with the parameters in the MEA-H2O-CO2-O2-SO2 system shows that corrosion rate of carbon steel increases with an increase in O-2 and SO2 concentrations in simulated flue gas stream, as well as MEA concentration, CO2 loading, and operating temperature. It was observed that CO2 loading had the highest impact on the corrosion rate, while SO2 and O-2 show only slight effects on the corrosion rate.