In the majority of the published work related to organic acid corrosion of mild steel, the focus is on
acetic acid due to its prevalence in a typical organic acid mix seen in the field. In this work, the
electrochemical behaviour of X65 carbon steel in the presence of other important organic acids (formic
and propionic) and the effect that these have in the growth and protectiveness of iron carbonate (FeCO3)
scale have been investigated.