| Volatilization | The Henry's Law constant for methyl isopropyl ketone is estimated as 1.13X10-4 atm-cu m/mole(SRC) derived from its vapor pressure, 52.2 mm Hg(1), and water solubility, 5.24X10+4 mg/L(2). This Henry's Law constant indicates that methyl isopropyl ketone 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 5.8 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 5.9 days(SRC). Methyl isopropyl ketone's (estimated) Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of methyl isopropyl ketone from dry soil surfaces may exist(SRC) based upon a vapor pressure of 52.2 mm Hg(1).
Literature: (1) Daubert TE, Danner RP; Physical and thermodynamic properties of pure chemicals: data compilation. Washington, DC: Taylor & Francis (1989) (2) Yalkowsky SH, He Y; Handbook of aqueous solubility data. Boca Raton, FL: CRC Press p.165 (2003) (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 methyl isopropyl ketone is estimated as 38(SRC), using a log Kow of 0.84(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that methyl isopropyl ketone is expected to have very high 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. 14 (1995) (2) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Jan, 2010. Available from, as of Feb 15, 2011: http://www.epa.gov/oppt/exposure/pubs/episuitedl.htm (3) Swann RL et al; Res Rev 85: 17-28 (1983) |
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