Inhibition of Mild Steel Corrosion in 1M Hydrochloric Medium by the Methanolic Extract of Ammi visnaga L. Lam Seeds

Table 3

Corrosion parameters obtained from weight loss measurements for carbon steel in 1.0 M HCl containing various concentration of EMG at 303 K.

Inhibitor	Concentration (g/L)	Corrosion rate (mg/cm^2 h)	Inhibition efficiency (%)	Surface average (θ)
Blank	-	1.135	-	-
EMG	0.2	0.4995	56	0.56
	0.4	0.3519	69	0.69
	0.6	0.2611	77	0.77
	1	0.1929	83	0.83