Corrosion Inhibition of Carbon Steel in 0.5 M H₂SO₄ by Phtalocyanine Blue

Table 1

Inhibitor efficiency values obtained from the weight loss tests at different concentrations and temperatures.

𝐶inh (ppm)	I.E. (%)
	25°C	40°C	60°C
0	—	—	—
100	−48.806	−79.781	−89.513
200	−50.759	−52.564	−58.637
400	−16.549	−2.8457	−54.426
600	7.942	−23.521	−30.119
800	35.052	−0.7194	7.1672
1000	24.6	0.2282	−31.134