The weight loss measurements were performed in a double
walled glass cell, equipped with a thermostat-cooling condenser.
For each experiment three samples of mild steel (5 cm 4 cm)
were immersed in 450 mL of HCl solutions (in the range
0.1–0.5 M) at 298(±1) K for 24 h, in the absence and in the presence
of the inhibitor at a concentration of 5.0 104 mol/L. The inhibitor
concentration was chosen taking into account the solubility