PROCESS FOR TREATING LANOLIN AND LANOLIN DERIVATIVES

摘要

Lanolin and lanolin derivatives as normally available at the present time contain traces of one or another of the chlorinated hydrocarbon pesticide compounds commonly used in the treatment of sheep for control of ectoparasites. Herein is disclosed a method for the treatment of lanolin and lanolin derivatives, whereby the chlorinated hydrocarbon pesticide content thereof is substantially reduced. The method herein disclosed involves subjecting lanolin or derivatives thereof to treatment at elevated temperatures, while in the form of a relatively slowly moving whirling or socalled "wiped film" of relatively minute thickness, while held under vacuum.