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The anodic behavior of pure iron in alkaline chloride solution was studied by potential sweep and galvanostatic methods. For active dissolution anodic Tafel slopes of 65 and 66 mV/decade were obtained from the galvanostatic and potential sweep experiments, respectively. These values can be interpreted in terms of the Bockris mechanism with Temkin adsorption. Passivation was also observed. The peak current or critical current which appeared in the potential‐current curve obtained by potential sweeps was proportional to the square root of the sweep rate. The potential associated with the peak current varied linearly in the anodic direction as the log of the sweep rate with a slope of 33 mV/decade. The square root of the passivation time obtained from galvanostatic polarization was inversely proportional to the current. These results were interpreted by assuming that passivation occurred when the iron chloride complex attained its solubility limit.