| Volatilization | The Henry's Law constant for p-nonylphenol is estimated as 3.4X10-5 atm-cu m/mole(SRC) from its experimental values for vapor pressure, 8.175X10-4 mm Hg(1), and water solubility, 7 mg/l(2). This value indicates that p-nonylphenol 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 1.8 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 18 days(3,SRC). The volatilization half-life from a model pond (2 meters deep) can be estimated to be about 19.6 days if the effect of adsorption to sediment is ignored(4,SRC); when the effect of maximum adsorption is considered, the half-life increases to 5.8 years(4,SRC).
Literature: (1) Bidelman TF, Renberg L; Chemosphere 14: 1475-81 (1985) (2) Yalkowsky SH, Dannenfelser RM; Aquasol Database of Aqueous Solubility. Version 5 (1992) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (4) USEPA; EXAMS II Computer Simulation (1987) |
| Soil Adsorption | The Koc of p-nonylphenol is estimated as approximately 32400(SRC), using an experimental log Kow of 5.76(1) and a regression-derived equation(2,SRC). According to a recommended classification scheme(3), this estimated Koc value suggests that p-nonylphenol will be immobile in soil(SRC).
Literature: (1) Itokawa H et al; Chem Pharm Bull 37: 1619-21 (1989) (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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