ACETONITRILE WATER AND ACETONITRILE ETHYLENE-GLYCOL MIXTURES AS EFFECTIVE EXTRACTING AGENTS FOR POLAR ORGANIC-SUBSTANCES

Extraction of amines, alcohols, and sulfoxides from octane by acetonit rile-water and acetonitrile-ethylene glycol mixtures has been studied at 20 +/- 1-degrees-C. Mixtures of acetonitrile with water and glycol exhibit pronounced synergism with respect to polar groups in the conce ntration ranges 5-20 vol. % water and 5-40% ethylene glycol. At the sa me time these mixtures are characterized by low and moderate repulsive action toward hydrocarbon radicals of the extractable substances comp ared with water; accordingly they may be used effectively for extracti on recovery of the highest homologs of polar organic substances from h ydrocarbon solutions with complete regeneration of the polar phase by distilling off the acetonitrile.