A Study of 1-Benzyl-3-phenyl-2-thiourea as an Effective Steel Corrosion Inhibitor in 1.0 M HCl Solution

Table 1

EIS parameters of low carbon steel in 1.0 M HCl with different concentrations of BPTU.

CM (M)	Rct (Ω cm^2)	Rs (Ω cm^2)	CPE (μΩ s^n cm^−2)	n	Cdl (μF cm^−2)	χ^2	H (%)
Blank	125 ± 1.21	3.52 ± 0.05	64.62 ± 1.54	0.80 ± 0.03	29.14 ± 2.12	0,0009
2 × 10^−4	2495 ± 8.23	2.077 ± 0.07	13.19 ± 0.26	0.63 ± 0.02	4.20 ± 0.08	0,0008	94.99
10^–4	1652 ± 4.11	1.501 ± 0.04	14.03 ± 0.12	0.61 ± 0.02	5.07 ± 0.07	0,0002	92.43
5 × 10^−5	1374 ± 2.46	2.438 ± 0.06	22.4 ± 0.27	0.55 ± 0.01	5.24 ± 0.05	0,0008	90.90
10^–5	1018 ± 3.82	2.34 ± 0.05	24.51 ± 0.36	0.6 ± 0.03	6.11 ± 0.06	0,0009	87.72