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1-METHYL-1-CYCLOHEXENE

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1-METHYL-1-CYCLOHEXENE Basic information
1-METHYL-1-CYCLOHEXENE Chemical Properties
  • Melting point:-119.4°C
  • Boiling point:110-111 °C(lit.)
  • Density 0.811 g/mL at 20 °C(lit.)
  • vapor pressure 27.4 at 20.2 °C, 36.4 at 25.0 °C (transpiration method, Verevkin et al., 2000)
  • refractive index n20/D 1.45(lit.)
  • Flash point:25 °F
  • storage temp. Flammables area
  • solubility Soluble in benzene and ether (Weast, 1986) and miscible with many hydrocarbons similar in chemical structure, e.g., cyclohexane, cyclohexene, etc.
  • form Liquid
  • color Clear colorless
  • Water Solubility 52 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966)
  • BRN 1304483
  • Henry's Law Constant8.86 x 10-2 atm?m3/mol at 25 °C (approximate - calculated from water solubility and vapor pressure)
  • Stability:Stable, but may be prone to polymerization. May be stabilized by the addition of around 10 ppm hydroquinone. Highly flammable. Incompatible with strong oxidizing agents.
  • InChIKeyCTMHWPIWNRWQEG-UHFFFAOYSA-N
  • CAS DataBase Reference591-49-1(CAS DataBase Reference)
  • EPA Substance Registry SystemCyclohexene, 1-methyl- (591-49-1)
Safety Information
  • Hazard Codes F,Xn,Xi
  • Risk Statements 11-36/37/38-65
  • Safety Statements 16-26-36-62
  • RIDADR UN 3295 3/PG 2
  • WGK Germany 2
  • Hazard Note Irritant
  • TSCA Yes
  • HazardClass 3
  • PackingGroup II
  • HS Code 29021900
MSDS
1-METHYL-1-CYCLOHEXENE Usage And Synthesis
  • Chemical Propertiescolourless liquid
  • Physical propertiesClear, colorless, very flammable, watery liquid with a characteristically unpleasant, aromatic hydrocarbon-type odor.
  • Environmental FatePhotolytic. Atkinson (1985) reported a rate constant of 9.45 x 10-11 cm3/molecule?sec for the reaction of 1-methylcyclohexene with OH radicals in the atmosphere.
  • Purification MethodsFree it from hydroperoxides by passing through a column containing basic alumina or refluxing with cupric stearate, filter and fractionally distil it from sodium. [Vogel J Chem Soc 1332 1938, Cope et al. J Am Chem Soc 79 4729 1957, Beilstein 5 III 197, 5 VI 245.]
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