DL-methionine has been investigated as inhibitor for the corrosion of mild steel in 1.0M hydrochloric acid solution
using weight loss method and Scanning Electron Microscope (SEM) analysis. The investigated results showed that the inhibition
efficiency increases with the increase in concentration of the inhibitor and decreases with the increase in temperature. SEM
analysis indicated that the metal surface was in a better condition in the presence of inhibitor than the specimen exposed in the
absence of the inhibitor.