
%0 Journal Article
%A Stapleton, IW 
%T A simple method of polyamine purification
%J Australian Journal of Chemistry
%D 1985/04/01
%V 38
%N 4
%P 633-636
%K 
%R https://doi.org/10.1071/CH9850633
%U https://www.publish.csiro.au/paper/CH9850633 
%X A simple procedure for the large-scale purification of commercial polyethyleneamines (H2N[CH2CH2NH]nH where n = 2-5) is described in which the per- tosylate salt separates as a crystalline solid from aqueous solution. The salts require no further purification except for pentaethylenehexamine (n = 5), which requires recrystallization from water. The free bases are regenerated from the tosylate salt by an anion-exchange resin. 
