Масла эфирные. Определение эфирного числа после ацетилирования и расчет содержания свободных спиртов и общего содержания спиртов
Название (англ.):
Essential oils; Determination of ester value after acetylation and evaluation of free alcohols and total alcohols content
Описание (англ.):
The essential oil is acetylated by acetic anhydride in the presence of sodium acetate. The acetylated oil is isolated and dried and the determination of its ester value is carried out in accordance with ISO 709. Through the determination of ester value before and after acetylation, it is possible to evaluate free alcohols and totalalcohols content. This method is not applicable to essential oils containing appreciable quantities of tertiary alcohols which would not be completely acetylated, or phenols, lactones, aldehydes or enolysable ketones, which would be acetylated in addition to free alcohols.