METHOD OF EXTRACTING VANILIN, ETHYLVANILIN, ISOVANILIN AND ORTO-VANILIN FROM WATER SOLUTIONS

摘要

FIELD: chemistry.;SUBSTANCE: method of extracting vanillin, ethylvanillin, iso-vanillin and ortho-vanillin from water solutions is characterised by the following: preliminarily to water solutions of vanillin, ethylvanillin, iso-vanillin and ortho-vanillin added are; ammonium sulphate, until its content in solution is 42-43% to solution weight, and preliminary prepared mixture of solvents, consisting of 22-23 wt % acetone and 78-77 wt % diacetone alcohol, then extraction is carried out with molar ratio of water and organic phases 10:1, and degree of vanillins extraction (R,%) is calculated by formula: R=D-100/(D+r), where D is coefficient of vanillins distribution between solvent mixture and water-salt solution, r is ratio of equiweight volumes of water and organic phases.;EFFECT: increase of degree of vanillin, ethylvanillin, iso-vanillin and ortho-vanillin extraction from water solutions.;1 tbl, 2 ex