FIELD: corrosion protection. SUBSTANCE: invention . in particular, relates to protection of metal of equipment operated in media containing carbon dioxide and hydrogen sulfide. Inhibitor contains 70-99.9% of synthetic oil and 0.1-30% of urea (synergetic additive). The former is formed as by-product in a process, in which benzene is hydrogenated into cyclohexane and cyclohexane oxidized with oxygen into cyclohexanol to be further dehydrogenated. EFFECT: increased protection effect and aftereffect. 8 tbl
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