Two methods are proposed for purification of perfluorinated organic co
mpounds: alkali decomposition of polyfluorinated compounds and their e
xhaustive fluorination with elemental fluorine on catalysts (transitio
n metal fluorides). Characteristics of purified perfluorinated paraffi
ns, ethers, and trialkylamines are given. Features of alkali decomposi
tion and fluorination of perfluorinated organic compounds are studied.