Anethol from Pine Oil

Anethol, which has a boiling point of about 235° C. has heretofore been recognized as a constituent of oil of anise and has been derived from anise seed, being used principally as a flavoring. However, anethol has not heretofore been recognized as a constituent of pine oil. 

I have discovered that anethol is present in pine oil. 

Pine oil is fractionated and cuts having a boiling range below about 220° C. and between about 220° C.-250° C. and above about 250° C., respectively, are obtained. The cut boiling between 220° C. - 250° C., contains the major proportion of the anethol present in the original pine oil. 

The cut after treatment is refractionated up to about 250° C. and the distillate refrigerated. The refrigeration of the distillate will result in effecting crystallization of the anethol which may be readily separated from the mother liquor by filtration or centrifugation. 

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Smith, L. T. Method of Separating Anethol from Pine Oil 1930 US 1,777,704... 

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