“Cis”-inhibitors (consisting of sec.-oleylamine and oleic acid) and “trans”-inhibitors (consisting of sec.-elaidylamine and elaidic acid) are examined.
The former are more effective against the corrosion of dipped mild steel than “trans”-inhibitors, when they are duly dispersed in corrosive media. But “trans”-inhibitors are more effective additives for rust-preventive oil than “cis”-inhibitors, because the metal wetted by the oil containing “trans”-inhibitors is more repellent.
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