The Gas Chromatographic Analysis of Primary, Secondary and Tertiary Fatty Amines, and of Corresponding Quaternary Ammonium Compounds

Abstract

The separation and identification of fatty amines by gas chromatography was performed for the three homologous series and for the corresponding quaternary ammonium compounds. A satisfactory separation of mixtures of primary, secondary and tertiary fatty amines was obtained by using E 301 silicone grease as stationary phase and glass beads as inert solid support. Secondary and tertiary fatty amines may also be separated by means of the same support, using Apiezon L grease as stationary phase. Quaternary ammonium salts were analyzed by thermal decomposition at high injection port temperatures, and separation the resulting amines. These methods have been particularly used for the analysis of the constituents of “Alamine 336” (a commercial mixture of tertiary amines) and of “Aliquat 336” (corresponding methylammonium salts).