Bactericidal and corrosion-inhibiting activity of quaternary ammonium salts synthesized from aliphatic amines and alkenyl halides

The performance of quaternary ammonium salts based on di-, tri-, and polyamines and alkenyl halides as bactericides for inhibition of sulfate-reducing bacteria and biocorrosion inhibitors has been studied. It has been found that complete inhibition of bacterial growth by the synthesized quaternary ammonium salts of this series is attained at concentrations of 25 to 150 mg/L. The protection effect is 75 to 91%, with the corrosion rate in the presence of these reagents ranging within 10(-4)-10(-3) g/(m(2) h). Quaternary ammonium salts that are the best in both bactericidal and corrosion-inhibiting activity have been determined. It has been shown that the bactericidal and inhibitory properties of ammonium salts depend on the nature of alkenylated amine and the number of alkenyl substituents in the structure of the ammonium salt.