Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Eucalyptol
open-in-new
<p>Eucalyptol (also called cineole) is a <a href="/facts/Monoterpenoid/6kFBtsXM">monoterpenoid</a> colorless liquid, and a <a href="/facts/Bicyclic/WfstMqT6">bicyclic</a> <a href="/facts/Ether/jwDg0IKr">ether</a>. It has a fresh <a href="/facts/Camphor/53KvP2Rw">camphor</a>-like odor and a spicy, cooling taste. It is insoluble in water, but <a href="/facts/Miscible/HwQaolbQ">miscible</a> with organic solvents. Eucalyptol makes up about 70–90% of <a href="/facts/Eucalyptus_oil/5mFFPFwn">eucalyptus oil</a>. Eucalyptol forms crystalline <a href="/facts/Adduct/vBpTmotm">adducts</a> with <a href="/facts/Hydrogen_halide/avUQ6Nwy">hydrohalic acids</a>, <a href="/facts/O-Cresol/ebjur602"><i>o</i>-cresol</a>, <a href="/facts/Resorcinol/fI1glr61">resorcinol</a>, and <a href="/facts/Phosphoric_acid/l6NbwyCv">phosphoric acid</a>. Formation of these adducts is useful for purification. </p><p>In 1870, <a href="/facts/Fran%25C3%25A7ois_Stanislas_Cloez/dC1xQngc">F. S. Cloez</a> identified and ascribed the name "eucalyptol" to the dominant portion of <i><a href="/facts/Eucalyptus_globulus/GJV25Xos">Eucalyptus globulus</a></i> oil. </p>