N-n-Alkyl-N, N, N', N', N'-pentamethylethylenediammonium dichlorides were prepared according to two different methods. Antibacterial properties of the diammonium salts and N-n-alkyl (2-hydroxyethyl) dimethylammonium chlorides, obtained as intermediates, against Staphylococcus aureus and Escherichia coli have been investigated. Activities of the diammonium salts were superior to those of the monoammonium salts and increased with increasing alkyl-chain length.
