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Names | |
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IUPAC name
1-Methylcyclohexene,3-Methylcyclohexene, 4-Methylcyclohexene
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Systematic IUPAC name
1-Methylcyclohexene,3-Methylcyclohexene, 4-Methylcyclohexene | |
Other names
2,3,4,5-Tetrahydrotoluene or 1-Methyl-1-Cyclohexene (1-Methylcyclohexene), 1,2,3,6-Tetrahydrotoluene (4-Methylcyclohexene)
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Identifiers | |
3D model (JSmol)
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1304483 (1-methylcyclohexene), 1848550 (3-methylcyclohexene), 1901299 (4-methylcyclohexene) | |
ChemSpider | |
EC Number |
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PubChem CID
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UNII |
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UN number | 3295 |
CompTox Dashboard (EPA)
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Properties | |
C7H12 | |
Molar mass | 96.170 g/mol for 1-methylcyclohexene |
Appearance | clear, liquid, colorless for 1-methylcyclohexene |
Density | 0.811 g/mL at 20 °C for 1-methylcyclohexene, 0.805 g/mL for 3-methylcyclohexene, 0.799 g/mL for 4-methylcyclohexene |
Melting point | -120.4°C for 1-methylcyclohexene at 1 atm, -124 °C for 3-methylcyclohexene, -115.5 °C 4-methylcyclohexene |
Boiling point | 110 °C for 1-methylcyclohexene at 1 atm, 104 °C for 3-methylcyclohexene, 103 °C 4-methylcyclohexene |
0.052 g/kg for 1-methylcyclohexene | |
Refractive index (nD)
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1.44 for 1-methylcyclohexene |
Hazards | |
GHS labelling: | |
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Warning | |
H225, H304, H315, H319, H335 | |
P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P301+P310, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P331, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501 | |
Flash point | -3 °C |
Safety data sheet (SDS) | MSDS (1-methylcyclohexene) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Methylcyclohexene refers to any one of three organic compounds consisting of cyclohexene with a methyl group substituent. The location of the methyl group relative to the cyclohexene double bond creates the three different structural isomers. These compounds are generally used as a reagent or intermediate to derive other organic compounds.[1]
Methylcyclohexenes are a cyclic olefins. Cyclic olefins can come together to form polymers. These polymers are thermoplastics that are advantageous due to their low moisture intake, their ability to resist high temperatures, have low bireinfringence, and excellent transparency. This type of polymer material is very useful in medical instruments, packaging, fibers, and optics.
As simple molecules, methylcyclohexenes are generally available from different biochemical manufacturers.[2]