Assertion: vanillin | /r/HasProperty | removed in mixed vapor of vanillin
Facets:
Source sentences:
text: In a process for the recovery of vanillin in high yield and purity from a crude concentrate, containing vanillin contaminated with colored, flavored and other impurities, the steps comprising vacuum-distilling the crude vanillin concentrate while continuously dilutin said concentrate during the entire distillation with between one and six volumes of a liquid substantially aliphatic hydrocarbon distilling aid whichis non-reactive with vanillin and substantially a non-solvent for vanillin at room temperature, said distilling aid having a boiling range wherein the aliphatic hydrocarbon distilling aid simultaneously distills with the vanillin at a temperature which does not exceed the temperature which ,causes degradation of the vanillin, and continuingthe distillation while the vanillin is removed in a mixed vapor of vanillin and said distilling aid, then separating the vanillin from said distilling aid.