Abstract
Mixtures of hydroxyethylated amines with hydrocarbon radicals C10–C13 and C17–C20 containing 2, 5, and 14 ethyleneoxy groups were tested as inhibitors of general carbon dioxide and hydrogen sulfide corrosion and hydrogenation of carbon steel in weakly acidic hydrochloric media and a simulated highly mineralized stratal water. In electrolytes containing H2S or CO2 + H2S, the protective values of the mixtures were 90 (5 mM HCl) and 96% (50 mM HCl). The hydrogen diffusion through a steel membrane was reduced five times or even suppressed completely by the test compounds.
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