3-METHYLHEPTANE CAS#: 589-81-1

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 ppm_v 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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