Terpinene
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| Terpinenes | |||
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| Chemical structures |  |
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| α-Terpinene | β-Terpinene | γ-Terpinene | |
| Chemical names | α: 4-methyl-1-(1-methylethyl)-1,3-cyclohexadiene β: 4-methylene-1-(1-methylethyl)cyclohexene γ: 4-methyl-1-(1-methylethyl)-1,4-cyclohexadiene |
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| Chemical formula | C10H16 | ||
| Molecular mass | 136.24 g/mol | ||
| CAS numbers | α: [99-86-5] γ: [99-85-4] |
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| Densities | α: 0.8375 g/cm3 β: 0.838 g/cm3 γ: 0.853 g/cm3 |
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| Melting point | α: 60-61°C | ||
| Boiling points | α: 173.5-174.8 °C β: 173-174 °C γ: 183 °C |
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| SMILES | α: CC1=CC=C(C(C)C)CC1 β: C=C1CC=C(C(C)C)CC1 γ: CC1=CCC(C(C)C)=CC1 |
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| Disclaimer and references | |||
The terpinenes are three isomeric hydrocarbons that are classified as terpenes. They each have the same molecular formula and carbon framework, but they differ in the position of carbon-carbon double bonds. α-Terpinene has been isolated from cardamom and marjoram oils, and from other natural sources. β-Terpinene has no known natural source, but has been prepared synthetically from sabinene. γ-Terpinene is natural and has been isolated from a variety of plant sources.
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