| Volatilization | The Henry's Law constant for 1-undecanol is estimated as 7.23X10-5 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that 1-undecanol is expected to volatilize from water surfaces(2). 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)(2) is estimated as 20 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)(2) is estimated as 10 days(SRC). 1-Undecanol's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column. The volatilization half-life from a model pond is about 9 months when adsorption is considered(3). 1-Undecanol is not expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 2.97X10-3 mm Hg(4).
Literature: (1) Meylan WM, Howard PH; Environ Toxicol Chem 10: 1283-93 (1991) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) US EPA; EXAMS II Computer Simulation (1987) (4) Daubert TE, Danner RP; Data Compilation, Tables of Properties of Pure Cmpds, Design Inst for Phys Prop Data, Am Inst for Phys Prop Data, NY, NY (1989) |
| Soil Adsorption | The Koc of 1-undecanol is estimated as 8,800(SRC), using a log Kow of 4.72(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 1-undecanol is expected to be immobile in soil.
Literature: (1) Abraham MH et al; J Pharm Sci 83: 1085-100 (1994) (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) |
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