World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0003232023
Reproduction Date:

Title: Phellandrene  
Author: World Heritage Encyclopedia
Language: English
Subject: Monoterpene, Echinophora sibthorpiana, Eucalyptus staigeriana, Eucalyptus radiata, Dienes
Publisher: World Heritage Encyclopedia


IUPAC names
α: 2-Methyl-5-(1-methylethyl)-1,3-cyclohexadiene
β: 3-Methylene-6-(1-methylethyl)cyclohexene
(α) Y
ChemSpider (α)
Jmol-3D images Image

Image (β)

Molar mass 136.24 g/mol
Appearance Colorless oil (α and β)
Density α: 0.846 g/cm3
β: 0.85 g/cm3
Boiling point α: 171-172 °C
β: 171-172 °C
Insoluble (α and β)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 Y  (: Y/N?)

Phellandrene is the name for a pair of 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.[2] It is also a constituent of the essential oil of Eucalyptus dives.[3] 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.[4]


  1. ^ The Merck Index, 12th Edition, 7340, 7341
  2. ^ Jacobs, S.W.L., Pickard, J., Plants of New South Wales, 1981, ISBN 0-7240-1978-2.
  3. ^ Boland, D.J., Brophy, J.J., and A.P.N. House, Eucalyptus Leaf Oils, 1991, ISBN 0-909605-69-6.
  4. ^ Urben, Peter (2007). Bretherick's Handobook of Reactive Chemical Hazards 1 (7 ed.). Butterworth-Heinemann. p. 1154. 
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.