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|Section2= }} Phellandrene is the name for a pair of organic compounds that have a similar molecular structure and similar chemical properties. α-Phellandrene and β-phellandrene are cyclic monoterpenes and are double-bond isomers. In α-phellandrene, both double bonds are endocyclic and in β-phellandrene, one of them is exocyclic. Both are insoluble in water, but miscible with ether. α-Phellandrene was named after ''Eucalyptus phellandra'', now called ''Eucalyptus radiata'', from which it can be isolated.〔Jacobs, S.W.L., Pickard, J., ''Plants of New South Wales'', 1981, ISBN 0-7240-1978-2.〕 It is also a constituent of the essential oil of ''Eucalyptus dives''.〔Boland, D.J., Brophy, J.J., and A.P.N. House, ''Eucalyptus Leaf Oils'', 1991, ISBN 0-909605-69-6.〕 β-Phellandrene has been isolated from the oil of water fennel and Canada balsam oil. The phellandrenes are used in fragrances because of their pleasing aromas. The odor of β-phellandrene has been described as peppery-minty and slightly citrusy. The α-phellandrene isomer can form hazardous and explosive peroxides on contact with air at elevated temperature. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Phellandrene」の詳細全文を読む スポンサード リンク
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