EIS parameters for the corrosion of mild steel in 0.5 M HCl without and with various concentrations MISB inhibitor molecules.

Inhibitor	C (mM)	R s (Ω cm2)	R p (Ω cm2)	n	IE%	θ
Blank		1.13	10.71	0.828
MISB	8.56 × 10−3	0.727	26.80	0.812	60.06	0.61
	17.10 × 10−3	0.520	51.19	0.816	79.10	0.80
	25.70 × 10−3	0.693	78.01	0.843	82.29	0.83
	34.20 × 10−3	0.569	127.21	0.856	91.60	0.93