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Gas chromatographic separation of aliphatic diamines

Authors
Journal
Journal of Chromatography A
0021-9673
Publisher
Elsevier
Publication Date
Volume
42
Identifiers
DOI: 10.1016/s0021-9673(01)80615-4

Abstract

Abstract The separation of aliphatic diamines by gas—liquid chromatography using a polar and a non-polar stationary phase is described and the results are compared with those obtained using aromatic polymer beads treated with polyethylene imine. For a homologous series of diamines, Apiezon L on alkaline-washed Celite is found to be the most satisfactory material, while for diamines with similar boiling points, the polar phase Carbowax 20M is most efficient. The different behaviour of the column materials is discussed in terms of hydrogen-bonding and other intermolecular forces between the amine and the liquid phase.

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