Isomers of Poly Aminophenol: Chemical Synthesis, Characterization, and Its Corrosion Protection Aspect on Mild Steel in 1 M HCl

Table 3

Impedance parameters for mild steel in 1 M HCl in the presence and absence of different concentrations of isomers of aminophenol.

Inhibitor concentration; (mg/L)	𝐶dl; (μF/cm^2)	𝑅ct; (Ω cm^2)	IE (%)
PoAP
Blank	6.81	20.12	—
25	5.48	64.81	69
50	5.13	71.14	71.72
100	4.68	108.33	81.43
250	4.31	133.49	85
500	4.08	208.55	90.35
PmAP
Blank	6.81	20.12	—
25	6.22	25.20	20.17
50	5.22	31.43	35.98
100	4.83	32.52	38.13
250	4.59	45.65	55.93
500	4.38	100.29	79.94
PpAP
Blank	6.81	20.12	—
25	5.57	49	58.94
50	5.06	65	69.05
100	4.52	109.5	81.63
250	4.29	138.95	85.52
500	4.41	115	82.50