Azulen Properties, Molecular Formula, Applications - WorldOfChemicals

Azulen Properties


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Molecule Structure Image



Azulene is an organic compound and an isomer of naphthalene. Whereas naphthalene is colourless, azulene is dark blue. Its name is derived from the Spanish word azul, meaning "blue". Two terpenoids, vetivazulene (4,8-dimethyl-2-isopropylazulene) and guaiazulene (1,4-dimethyl-7-isopropylazulene), that feature the azulene skeleton are found in nature as constituents of pigments in mushrooms, guaiac wood oil, and some marine invertebrates. Azulene has a long history, dating back to the 15th century as the azure-blue chromophore obtained by steam distillation of German chamomile.

Chemical Properties

Appearance Blue Crystal
Boiling Point 242 °C(lit.)
CAS Number 275-51-4
ChEBI 31249
IUPAC Name bicyclo[5.3.0]decapentaene
Melting Point 98-100 °C(lit.)
Molar Mass 128.17 g mol?1
Molecular Formula C10H8
RTECS Number CO4570000
Solubility Insoluble
Synonyms Azulen;Azulene;Bicyclo(5.3.0)-Deca-1,3,5,7,9-Pentaene;Bicyclo[5.3.0]Decapentaene;Labotest-Bb Lt00007822;Cyclopentacyclohepten;Cyclopentacycloheptene;Azunamic