Summary
A liquid chromatographic method was developed to analyse the products of the reaction between urea and ethylene diamine in aqueous solution. Dowex 50W-X8, H+, 200–400 mesh, cation-exchange resin was found to be the best column packing for this purpose. Hydrochloric acid of various concentrations was used as the mobile phase; a concentration of 2M hydrochloric acid proved to be the most satisfactory. The developed method permits the separation of the following substances: ammonia, ethylene urea, urea, aminoethylene urea, and ethylene diamine.
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Jaworski, M. Ion-exchange chromatography of the product obtained in a reaction of ethylene diamine with urea. Chromatographia 13, 101–104 (1980). https://doi.org/10.1007/BF02263061
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DOI: https://doi.org/10.1007/BF02263061