Table 1.

Weight loss result of corrosion of mild steel in 0.1 mol L⁻¹ HCl solution without and with varying concentrations of the inhibitors L1 and L2 at temperatures from 303 to 363 K.

Inhibitors		303 K			333 K			363 K
	Cinh (ppm)	CR(mg/cm2h)	θ	η(%)	CR(g/cm2h)	θ	η (%)	CR(mg/cm2h)	θ	η (%)
L1	Blank	0.0033	–	–	0.0036	–	–	0.0039	–	–
	2 × 10–4	0.0017	0.50	50	0.0022	0.39	39	0.0028	0.29	29
	4 × 10–4	0.0014	0.58	58	0.0019	0.46	46	0.0025	0.36	36
	6 × 10–4	0.0014	0.58	58	0.0017	0.54	54	0.0022	0.43	43
	8 × 10–4	0.0011	0.67	67	0.0014	0.65	62	0.0019	0.50	50
	10 × 10–4	0.00083	0.75	75	0.0011	0.69	69	0.0017	0.56	56
	Blank	0.0033	–	–	0.0036	–	–	0.0039	–	–
L2	2 × 10–4	0.0022	0.33	33	0.0025	0.31	31	0.0028	0.28	28
	4 × 10–4	0.0019	0.42	42	0.0022	0.39	39	0.0025	0.36	36
	6 × 10–4	0.0014	0.58	58	0.0020	0.47	47	0.0022	0.44	44
	8 × 10–4	0.0011	0.67	67	0.0017	0.53	53	0.0019	0.51	51
	10 × 10–4	0.0008	0.76	76	0.0014	0.69	69	0.0017	0.56	56