ABSTRACT
CASRN: 691-37-2; molecular formula: C6H12; FW: 84.16 Physical state and color: Colorless liquid Melting point (°C): -153.6 (Weast, 1986) Boiling point (°C): 53.9 (Weast, 1986) Density (g/cm3): 0.6642 at 20 °C, 0.6594 at 25 °C (Dreisbach, 1959) Diffusivity in water (x 10-5 cm2/sec): 0.77 at 20 °C using method of Hayduk and Laudie (1974) Dissociation constant, pKa: >14 (Schwarzenbach et al., 1993) Flash point (°C): -31.6 (Hawley, 1981) Henry’s law constant (atm⋅m3/mol): 0.615 at 25 °C (Hine and Mookerjee, 1975) Ionization potential (eV): 9.45 (Lias, 1998) Soil organic carbon/water partition coefficient, log Koc: Unavailable because experimental methods for estimation of this parameter for aliphatic hydrocarbons are lacking in the documented literature Octanol/water partition coefficient, log Kow: 2.70 using method of Hansch et al. (1968) Solubility in organics: Soluble in alcohol, benzene, chloroform, petroleum (Weast, 1986); miscible in pentene, hexane, and heptene. Solubility in water: 48 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966) Vapor density: 3.44 g/L at 25 °C, 2.91 (air = 1)
270.8 at 25 °C (Wilhoit and Zwolinski, 1971) 433.8 at 37.21 °C (Steele et al., 1997) Environmental fate: Photolytic. Atkinson and Carter (1984) reported a rate constant of 1.06 x 10-16 cm3/molecule⋅sec for the reaction of 4-methyl-1-pentene in the atmosphere. Chemical/Physical. Complete combustion in air yields carbon dioxide and water. Source: California Phase II reformulated gasoline contained 4-methyl-1-pentene at a concentration of 300 mg/kg (Schauer et al., 2002). Uses: Manufacture of plastics used in automobiles, laboratory ware, and electronic components; organic synthesis.
