The Henry's Law constant for 2-ethylphenol is estimated as 4.6X10-6 atm-cu m/mole(SRC) from its experimental values for vapor pressure, 0.153 mm Hg at 25 deg C(1), and water solubility, 5340 mg/L at 25 deg C(2). This value indicates that 2-ethylphenol will volatilize from water surfaces(3,SRC). 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) is estimated as approximately 9 days(3,SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec) is estimated as approximately 68 days(3,SRC). 2-Ethylphenol's values for vapor pressure(1) and estimated Henry's Law constant(1,2,SRC) indicate that volatilization from dry and moist soil surfaces is possible, but is not likely to be a major fate process for this compound(SRC).
Literature: (1) Biddiscombe DP et al; J Chem Soc. pp. 5764-8 (1963) (2) Mueller M, Klein W; Chemosphere 25: 769-82 (1992) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington DC: Amer Chem Soc pp. 15-1 to 15-29 (1990)
The Koc of 2-ethylphenol is estimated as approximately 530(SRC), using a measured log Kow of 2.47(1) and a regression-derived equation(2,SRC). According to a recommended classification scheme(3), this estimated Koc value suggests that 2-ethylphenol has moderate to low mobility in soil(SRC).
Literature: (1) Hansch C, Leo AJ; Pomona College Medicinal Chemistry Project. Claremont, CA. Log P Database (1987) (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: 23 (1983)