Eugenol naturally exists in essential oils such as sesame oil, basil oil and cinnamon oil, which is colorless to light yellow thick oily liquid with strong clove aroma and spicy fragrance. At present, eugenol produced in industry is mostly obtained from essential oil rich in eugenol by alkali treatment. Usually, sodium hydroxide solution is added to the separated oil, and after heating and stirring, the non-phenol oil floating on the liquid surface is extracted with solvent or evaporated with steam, and then acid is added to acidify sodium salt to obtain crude eugenol, which is washed with water to be neutral, and then purified eugenol can be obtained by vacuum distillation...

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