Anticorrosive effects and antimicrobial properties of alkyldimethyl(hydroxyalkyl)ammonium bromides

Quaternary ammonium compounds containing the hydroxyalkyl moiety in the head group have been synthesized. These compounds exhibit a micelle-forming ability, high anticorrosive activity, and antimicrobial action. The compounds of the formula R(CH3)2N+(CH2CH2CH2OH)Br− with R = C14H29-C18H37 are characterized by a protective effect higher than 90–99% at 10 mg/l with respect to hydrogen sulfide corrosion, inhibiting properties against carbon dioxide corrosion (84–98% at 10–25 mg/l), and bactericidal action on sulfate-reducing bacteria (10–50 mg/l).