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3-METHYLHEPTANE

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3-METHYLHEPTANE Basic information
3-METHYLHEPTANE Chemical Properties
  • Melting point:-121--120°C
  • Boiling point:118 °C(lit.)
  • Density 0.705 g/mL at 25 °C(lit.)
  • vapor pressure 0.73 psi ( 37.7 °C)
  • refractive index n20/D 1.398(lit.)
  • Flash point:45 °F
  • Odor Threshold0.027ppm
  • Water Solubility 792 μg/kg at 25 °C (shake flask-GLC, Price, 1976)
  • BRN 1730777
  • Henry's Law Constant3.70 atm?m3/molat 25 °C (approximate - calculated from water solubility and vapor pressure)
  • CAS DataBase Reference589-81-1(CAS DataBase Reference)
  • EPA Substance Registry System3-Methylheptane (589-81-1)
Safety Information
MSDS
3-METHYLHEPTANE Usage And Synthesis
  • Chemical PropertiesColorless liquid.
  • Physical propertiesColorless, flammable liquid with an odor resembling hexane. An odor threshold concentration of 1.5 ppmv was reported by Nagata and Takeuchi (1990).
  • UsesCalibration, organic synthesis.
  • HazardFlammable, dangerous fire risk.
  • Environmental FatePhotolytic. Based on a photooxidation rate constant of 8.90 x 10-12 cm3/molecule?sec for the reaction of 3-methylheptane and OH radicals, the estimated lifetime is 16 h during summer sunlight (Altshuller, 1991).
    Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor. 3- Methylheptane will not hydrolyze because it does not contain a hydrolyzable functional group.
  • Solubility in organicsIn methanol, g/L: 154 at 5 °C, 170 at 10 °C, 190 at 15 °C, 212 at 20 °C, 242 at 25 °C, 274 at 30 °C, 314 at 35 °C, 365 at 40 °C (Kiser et al., 1961); miscible in many liquid hydrocarbons, particularly saturated hydrocarbons.
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