| Volatilization | The Henry's Law constant for 2-methyl-1-butene calculated from its vapor pressure, 610 mm Hg(1), and water solubility, 130 mg/l(2), is 0.43 atm-cu m/mole (SRC). This Henry's Law constant indicates that 2-methyl-1-butene should volatilize rapidly 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 2.4 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 3.3 days(SRC). 2-Methyl-1-butene's Henry's Law constant(1,2) indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 2-methyl-1-butene from dry soil surfaces exists based upon its vapor pressure of 610 mm Hg(1).
Literature: (1) Daubert TE, Danner RP; Data Compilation Tables of Properties of Pure Compounds NY, NY: Amer Inst for Phys Prop Data (1989) (2) Suzuki T; J Computer-aided Molecular Design 5: 149-66 (1991) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) |
| Solubility | Sol in alcohol, ether, benzene
Literature: Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 79th ed. Boca Raton, FL: CRC Press Inc., 1998-1999., p. 3-105
Literature: #In water, 130 mg/l @ 20 deg C.
Literature: Suzuki T et al; J Computer-aided Molecular Design 5: 149-66 (1991) |
| Soil Adsorption | Using a structure estimation method based on molecular connectivity indices(1), the Koc for 2-methyl-1-butene can be estimated to be 68(SRC). According to a classification scheme(2), this estimated Koc value suggests that 2-methyl-1-butene is expected to have high 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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