Method for preparing high-purity ionic liquids

摘要: A method for preparing a high-purity ionic liquid having pH value of 7 and an elemental analysis deviation less than 0.5 wt % between calculated found each carbon, hydrogen nitrogen, wherein the comprises forming monophasic or biphasic mixture inert liquid. When is formed, it filtered to yield filtrate from which recovered. mixtures separated into aqueous phase phase, whereby Furthermore, present purification procedure can be used clean-up contaminated by extracting polar extractant form extract containing Water traces are removed extract. Then, recovered