Abstract

Neodecanoic acid diamides were prepared by a simple one-step procedure involving condensation of neodecanoic acid with diethylenetriamine, triethylenetetramine, and pentaethylenehexamine. The inhibiting effect of these diamides on the corrosion of St3 low-carbon steel in 2 М H2SO4 and in 1 and 5 М HCl was studied gravimetrically. All the compounds synthesized efficiently inhibit the steel corrosion with the degree of protection at room temperature of 94–95% in 2 М H2SO4 and 96–97% in 1 М HCl.

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