Orris root oil

The irones are ionone homologues that have an additional methyl group adjacent to the twin methyl groups in the cyclohexane ring. The number of possible irone isomers is larger than that of the ionones due to the additional methyl group on the ring. Some of these irone isomers occur in essential oils from the roots of Orris species (see Orris Root Oil). 

Raw materials derived from intensive agricultural cultivation are usually relatively inexpensive. However, the prices of some natural materials may exceed 1000 per kilogram because cultivation and harvesting of these plants are tedious and product yields are very low. Examples of extremely valuable ingredients of fragrance and flavor creations include rose oil, jasmine absolute, tuberose absolute, orris root oil, ambrette seed oil, angelica root oil, and orange flower oil [220]. 

Orris root oil is obtained by steam distillation of the rhizomes of the sweet iris. Iris pallida Lam. (Iridaceae) cultivated in the Italian province of Tuscany or Iris germanica L. cultivated in Morocco. Prior to distillation the rhizomes are stored for several years and are then ground. The steam distillate is a light yellow to brown-yellow solid mass with a violet-like odor. The solid liquefies to a yellow to yellow-brown liquid at 38-50 °C. 

Orris Root Oil occurs as a light yellow to brown-yellow mass at room temperature and melts to form a yellow to yellow-brown liquid. It is the volatile oil obtained by steam distillation from the peeled, dried, and aged rhizomes of Iris pallida Lam. (Fam. Iridaceae). It is soluble in most fixed oils, in mineral oil, and in propylene glycol. It is insoluble in glycerin. 

Orpiment. Obsolete name for arsenic trisulfide, orris root oil. 

Orris Root Oil. Cottsiit. About 85% myristic acid the odorous pinciple irone methyl myristate, oleic aldehyde,... 

Synonyms orris root oil love root white flag Oxalic Acid... 

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