Structural formula

CAS: 80-56-8

Molecular formula: C10H16

Molecular weight: 136.23

Chinese name: α-pinene

alpha-pinolene

Alpha terpene

English name:.alpha.-Pinene

Cyclic dexadiene

pin-2-ene

Alpha pinene (+ / -)

Description: Colorless liquid. There are left -, right -, racemic three forms. Insoluble in water, soluble in ethanol, ether, acetic acid, easily soluble in rosin. Pinene is the most important representative of terpenes, with α- and β- isomers, both of which exist in a variety of natural essential oils. Turpentine contains 58-65% α-pinene and 30% β-pinene. The right-pinene was found in wax turpentine and turpentine produced in Hainan Island, China, while the left-handed pinene was found in turpentine produced in Spain, Austria and China. Melting point -55℃, boiling point 155-156℃

Production method: Obtained by decompression fractionation of turpentine.

Uses: important organic synthesis raw materials. Can be used to synthesize a range of fragrance products, as well as synthetic camphor, camphor, etc

Keto acid can be obtained by oxidation of pinene by ozone, and pinic acid can be further oxidized to produce plant growth stimulant, synthetic lubricant, plasticizer, etc. Pinene can also be made into pyene resin, etc. It can also be used as a solvent for paint wax.

α-pinene is a edible spice permitted by GB2760-86, which is mainly used to prepare spices, nutmeg substitutes and citrus flavors.

Related information:

Also known as α-pinadene, α-clepion bicyclic monopterpene compound. There are pairs of enantiomers, both oily. Dextrorotatory melting point -50℃, boiling point 155 ~ 156℃, rotation [α]D+51.1°, relative density 0.8590, refractive index 1.4662. The boiling point of racemes is 156.2℃, the relative density is 0.8585, and the refractive index is 1.4658. Soluble in alcohol, chloroform, ether, glacial acetic acid, almost insoluble in water. It is derived from turpentine in the pine family and Rhododendron capitatum Maxim. It has obvious antitussive effect and antifungal effect. α-pinene is one of the main components of turpentine, can be used as a fragrance component, is also an important intermediate in the synthesis of fragrance compounds, and is also used in the manufacture of camphor, camphor and terpinol.