Apopin Oil

#### Apopin Oil. **Apopin Oil **is the name given to the essential oil which is water-and-steam distilled from the wood of a species of Cinnamomum Camphora, native to China and Formosa. The tree is one of the so- called camphor trees, and it is furthermore the most common of all the camphor trees. However, the essential oil of this particular species, locally known as Yu-Sho or Shu-Yu, is not the oil from which camphor is isolated. (See monograph on **Camphor Oils**). **Apopin**** ****Oil**** **contains camphor, eucalyptol (= cineole) and terpineol in almost equal amounts. The oil is liquid and does not separate camphor (as distinguished from the "Hon-Sho" or so-called "true" camphor oil). **Apopin**** ****Oil**** **serves as a low-cost perfume oil in its country of origin. It is also used as a starting material for the isolation of the above mentioned three components. **Apopin**** ****Oil**** **is not a commercial article in the European or the American perfumery business, but since the botanical material for the production of this oil is available in such tremendous quantities, it is very likely that the oil will retain its importance as a local source of the above mentioned perfume materials. Another interesting feature is that certain fractions of **Apopin Oil **serve as a basis for the production of the so-called "Eucalyptus oil". This oil has recently (1958/59) appeared in significant quantities on the European market and elsewhere. This fact presents a serious threat to the production of genuine Australian, Spanish, Portuguese, African and other eucalyptus oils. Economic effects are already perceptible in several of these producing areas. See also monographs on **Camphor**** ****Oils**** **and **Eucalyptus**** ****Oil**, **Chinese**.