| Volatilization | The Henry's Law constant for 5-methyl-2-hexanone is estimated as 1.6X10-4 atm-cu m/mole(SRC) derived from its vapor pressure, 5.77 mm Hg(1), and water solubility, 5400 mg/L(2). This Henry's Law constant indicates that 5-methyl-2-hexanone is expected to volatilize from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 10 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 6.2 days(SRC). 5-Methyl-2-hexanone's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 5-methyl-2-hexanone from dry soil surfaces may exist(SRC) based upon its vapor pressure(1).
Literature: (1) Alarie Y et al; Toxicol Appl Pharmacol 134: 92-99 (1995) (2) Amoore JE, Hautala E; J Appl Toxicol 3: 272-90 (1983) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) |
| Soil Adsorption | The Koc of 5-methyl-2-hexanone is estimated as 250(SRC), using a log Kow of 1.88(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 5-methyl-2-hexanone is expected to have moderate mobility in soil.
Literature: (1) Hansch C et al; Exploring QSAR. Hydrophobic, Electronic, and Steric Constants. ACS Prof Ref Book. Heller SR, consult. ed., Washington, DC: Amer Chem Soc p. 35 (1995) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 4-9 (1990) (3) Swann RL et al; Res Rev 85: 17-28 (1983) |
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