Anticorrosive Effect of Halogenated Aniline Enaminoesters on Carbon Steel in HCl

Table 3

Electrochemical parameters obtained from LPR tests for halogenated aniline β-enaminoesters in 1.0 mol L^-1 HCl medium in AISI 1020 carbon steel.

Inhibitor	Conc. (mol L^-1)		(Ω cm^2)		(%)
Blank	—	0.999	51.79	—	—
F-EN	1.0 × 10^-5	0.999	90.79	0.4295	43.2
	1.0 × 10^-4	0.998	165.02	0.6810	68.6
	1.0 × 10^-3	0.997	202.02	0.7436	74.4
	1.0 × 10^-2	0.997	273.32	0.8505	85.0
Cl-EN	1.0 × 10^-5	0.999	93.03	0.4433	44.3
	1.0 × 10^-4	0.999	106.34	0.5130	51.4
	1.0 × 10^-3	0.998	235.92	0.7805	78.0
	1.0 × 10^-2	0.998	339.89	0.8076	81.8
Br-EN	1.0 × 10^-5	0.999	117.16	0.5579	55.8
	1.0 × 10^-4	0.999	126.12	0.5893	58.9
	1.0 × 10^-3	0.999	142.75	0.6372	63.7
	1.0 × 10^-2	0.998	236.11	0.7806	78.1
H-EN	1.0 × 10^-5	0.8594	445.55	0.4944	49.1
	1.0 × 10^-4	0.8318	772.96	0.5085	51.3
	1.0 × 10^-3	0.8642	1268.8	0.7224	72.1
	1.0 × 10^-2	0.8383	2467.6	0.8087	80.8