Corrosion parameters obtained from potentiodynamic polarization measurements for C-steel in SCPS contaminated with 0.6 M NaCl in the absence and presence of various concentrations of EDTA at 25 °C.

Sample	E corr vs. Ag/AgCl (mV)	I corr (μA cm−2)	β a (mV dec−1)	β c (mV dec−1)	CR (mpy)	IE%
Control	−430	12.48	0.235	−0.141	5.69	—
0.0005 M	−455	5.08	0.157	−0.131	2.32	60
0.005 M	−383	3.37	0.113	−0.124	1.54	73
0.05 M	−368	1.87	0.379	−0.059	0.85	85
0.2 M	−477	2.97	0.238	−0.109	1.36	76