METHOD OF EXTRACTION OF ORTHO-VANILINE AND ISOVANILLIN FROM AQUEOUS SOLUTIONS

摘要

Method for recovering ortho-vanillin, iso-vanillin and from aqueous solutions, characterized in that to aqueous ortho-vanillin, iso-vanillin and the salting-out agent sodium chloride was added to the salt content in the solution 34-35 wt.% Precooked and polivinilkaprolaktama solution with a concentration of 5 . -15 wt%, at a volume ratio of the aqueous and organic phases 10: 1, extracted, separated and the organic phase was analyzed spectrophotometrically, the recovery rate (R,%) ortho-vanillin, iso-vanillin, and calculated by the formula: R = D · 100 / (D + r),! where D - the distribution ratio of ortho-vanillin, iso-vanillin, and between the solution and the aqueous polivinilkaprolaktama, r - the ratio of the equilibrium amounts of the aqueous and organic phases.