A number of properties of fluoropolymers in aqueous solutions of hydrogen h
alides have been investigated. The results enable fluoropolymers to be used
in the purification of hydrogen halides and their aqueous solutions. The h
ydrophobicity of fluoropolymers and their diffusion permeability enable a p
roduction of hydrogen halides of low moisture content. A second unit for hy
droionic convection is based on hydroionic repulsion (determined by the hyd
rophobic properties of the fluoropolymer) and ionic elimination. The two un
its enable the highly effective, ecologically safe manufacture of highly pu
re hydrogen halides and their aqueous solutions to be carried out with mini
mum feedstock, cooling water, and power consumption.