The Inhibitory Properties of the Ambroxol Derivative on the Corrosion of Mild Steel in Hydrochloric Acid Medium

Table 3

The results of the EIS measurement of the corrosion rates.

(ppm)	(ohm)	Constant phase element parameters				(ohm)	(%)
		(kohm^−1·s^n)		(μF)	(pm)
0	0.61	0.49	0.88	333	8.5	130	—
3.2	0.58	0.54	0.88	240	11.8	160	18.9
16	0.62	0.55	0.89	227	12.5	215	39.3
80	0.59	0.57	0.87	171	16.6	359	63.8
400	0.63	0.85	0.92	116	24.6	844	84.6