Table 3.

The electrochemical parameters of the polarization curves of an iron electrode in a 1M HCl solution without and with different concentration of the Galactomannan.

Concentrations (g/l)	-Ecorr (mV/SCE)	icorr (mA/cm2)	-βc (mV/dec)	βa (mV/dec)	E (%)
Blank	471.20 ± 0.1	0.242 ± 0.001	269.7 ± 0.5	69.7 ± 0.6	–
0.25	474.68 ± 0.2	0.052 ± 0.002	228.5 ± 0.6	73.3 ± 0.4	78.3 ± 0.2
0.50	493.01 ± 0.2	0.049 ± 0.001	152.4 ± 0.4	66.8 ± 0.5	79.6 ± 0.2
0.75	505.83 ± 0.1	0.043 ± 0.002	150.7 ± 0.4	83.3 ± 0.6	82.1 ± 0.2
1.00	517.94 ± 0.1	0.032 ± 0.001	114.2 ± 0.3	77.3 ± 0.2	86.6 ± 0.2