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单词 cymene
释义

cymene

enUK

cy·mene

C0838900 (sī′mēn′)n.1. Any of three colorless liquid isomeric aromatic hydrocarbons, C10H14, used in the manufacture of synthetic resins and other organic synthesis.2. The para-isomer of cymene, which occurs naturally in essential oils, especially of cumin and thyme.
[French cymène, from Greek kumīnon, cumin; see cumin.]

cymene

(ˈsaɪmiːn) n (Elements & Compounds) a colourless insoluble liquid with an aromatic odour that exists in three isomeric forms; methylpropylbenzene: used as solvents and for making synthetic resins. The para- isomer is present in several essential oils. Formula: CH3C6H4CH(CH3)2[C19: cym- from Greek kuminon cumin + -ene]
Thesaurus
Noun1.cymene - any of three isotopes of a colorless aromatic liquid hydrocarbon occurring in the volatile oil of cumin and thyme and used in the manufacture of synthetic resinshydrocarbon - an organic compound containing only carbon and hydrogen

Cymene

enUK

cymene

[′sī‚mēn] (organic chemistry) Any of the isomeric hydrocarbons metacymene, paracymene, and orthocymene; paracymene is a liquid that is colorless, has a pleasant odor, and is made from oil of cumin or oil of wild thyme.

Cymene

 

(also methyl-isopropyl-benzene), an aromatic hydrocarbon having the structural formula

The meta-, ortho-, and para-isomers of cymene are known; the most important is para-cymene, which is a component of turpentine and many essential oils, including cumin oil and eucalyptus oil. A colorless liquid with a characteristic odor, para-cymene has a boiling point of 177.1°C, a melting point of –67.9°C, and a density of 0.857 g/cm3 at 20°C. Cymene is insoluble in water, but it is miscible with many organic solvents.

The similarity of the carbon skeleton of para-cymene with the skeletons of many cyclic terpenes is a result of their common origin. Thus, para-cymene may be produced by the pyrolysis of α-pinene, the dehydrogenation of limonene, or the heating of camphor with P2O5. In the chemical industry, para-cymene is produced from sulfite turpentine and is used as a raw material and a solvent.

cymene

enUK
  • noun

Words related to cymene

noun any of three isotopes of a colorless aromatic liquid hydrocarbon occurring in the volatile oil of cumin and thyme and used in the manufacture of synthetic resins

Related Words

  • hydrocarbon
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