This study considers proguanil hydrochloride for inhibition of mild steel corrosion in 2.0M HCl by weight loss method. Useful parameters like mean Corrosion Rate (XCR), Percentage Inhibition Efficiency (%IE) and degree of Surface Coverage (q) were evaluated from raw data generated experimentally. Analysis of generated data and available literature show that; XCR decreased in the present of proguanil hydrochloride inhibitor. The decrease in XCR increased with increased in inhibitor concentration but tested non-significant (P<0.05) for all inhibitor concentrations while showing continuous appreciation to values approaching significance level at high (5.0 x 10-4M) inhibitor concentrations and low (303K and 313K) corrodent temperatures. Useful parameters (%IE and q) increased with increase in inhibitor concentration and decreased with rise in corrodent temperature.
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