A Study of N,N-Diethylammonium O,O′-Di(p-methoxyphenyl)dithiophosphate as New Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

Table 3

The electrochemical parameters of impedance and corresponding corrosion inhibition efficiencies or carbon steel in 0.5 M HCl in the absence and presence of different concentrations of EAPP at 300 K.

(mg L^−1)	(Ω cm^2)	(μF cm^−2)	(%)
0	23.37	46.93	—
80	113.23	14.17	77.24
100	212.07	9.39	87.63
120	252.92	6.64	89.48
160	426.46	4.38	93.25