β-Pinene
Chemical compound / From Wikipedia, the free encyclopedia
β-Pinene is a monoterpene, an organic compound found in plants. It is one of the two isomers of pinene, the other being α-pinene. It is a colorless liquid soluble in alcohol, but not water. It has a woody-green pine-like smell.
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC names
6,6-Dimethyl-2-methylidenebicyclo[3.1.1]heptane Pin-2(10)-ene | |||
Other names
6,6-Dimethyl-2-methylenebicyclo[3.1.1]heptane 2(10)-Pinene Nopinene Pseudopinene | |||
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3D model (JSmol) |
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DrugBank | |||
ECHA InfoCard | 100.004.430 | ||
EC Number |
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Properties | |||
C10H16 | |||
Molar mass | 136.238 g·mol−1 | ||
Appearance | Colorless liquid | ||
Density | 0.872 g/mL | ||
Melting point | −61.54 °C; −78.77 °F; 211.61 K[1] | ||
Boiling point | 165–167 °C; 329–332 °F; 438–440 K[2] | ||
Thermochemistry | |||
Std enthalpy of combustion (ΔcH⦵298) |
−6214.1±2.9 kJ/mol[1] | ||
Hazards | |||
GHS labelling: | |||
Danger | |||
H226, H304, H315, H317, H410 | |||
P210, P233, P240, P241, P242, P243, P261, P264, P272, P273, P280, P301+P310, P302+P352, P303+P361+P353, P321, P331, P332+P313, P333+P313, P362, P363, P370+P378, P391, P403+P235, P405, P501 | |||
NFPA 704 (fire diamond) | |||
Flash point | 36 °C (97 °F; 309 K) | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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β-Pinene is one of the most abundant compounds released by forest trees.[3] If oxidized in air, the allylic products of the pinocarveol and myrtenol family prevail.[4]