Effect of Pharmaceutically Active Compound Nitroxoline on the Corrosion of Mild Steel in an Acidic Environment

Table 3

Inhibition efficiency values of various concentrations of Nitroxoline.

Nitroxoline conc. (ppm)	Mass loss (mg cm^−2)	Corrosion rate (mm y^−1)	Surface coverage ()	IE (%); η
H2SO4 (blank)	20.7	49.29	—	—
50	6.8	16.19	0.6715	67.15
100	5.9	14.05	0.7150	71.50
150	4.7	11.19	0.7730	77.30
200	3.2	7.62	0.8454	84.54
250	2.3	5.48	0.8888	88.88
300	1.3	3.10	0.9371	93.71