| Volatilization | The Henry's Law constant for 1-nonene is 0.7941 atm-cu m/mole(1). This Henry's Law constant indicates that 1-nonene is expected to volatilize rapidly 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 1 hr(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 4.5 days(SRC). However, the volatilization half-life does not take into account the effects of adsorption. This is apparent from the results of two EXAMS model runs, one in which the effect of adsorption was considered, yielding an estimated half-life of 6.5 days in a model pond 2 m deep, and one in which the effect of adsorption was ignored, yielding an estimated half-life of 39 hrs in a model pond 2 m deep(3). 1-Nonene's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 1-nonene from dry soil surfaces may exist(SRC) based upon a vapor pressure of 5.15 mm Hg(4).
Literature: (1) Yaws CL; Thermodynamics and Physical Property Data. Houston, TX: Gulf Publ Co pp. 217 (1992) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) USEPA; EXAMS II Computer Simulation (1987) (4) 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. 64 (1995) |
| Soil Adsorption | Using a structure estimation method based on molecular connectivity indices(1), the Koc for 1-nonene can be estimated to be 935(SRC). According to a classification scheme(2), this estimated Koc value suggests that 1-nonene is expected to have low mobility in soil.
Literature: (1) Meylan WM et al; Environ Sci Technol 26: 1560-67 (1992) (2) Swann RL et al; Res Rev 85: 17-28 (1983) |
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