Inhibitive effect of 4- and 5- carboxybenzotriazole on copper corrosion in acidic sulphate and hydrogen sulphide solutions

摘要

Commercial carboxybenzotriazole (CBT) usually consists of a mixture of the 4- and 5- substituted isomers and as such has been used to inhibit copper corrosion. Little work has been done on the inhibiting action of the individual compounds in different corrodents, and this paper describes their effect on the corrosion of copper in aerated acidic sulphate solution (pH=0 and 4), and in an aqueous sulphidising environment.