Vinyl methyl ether

CAS RN:107-25-5

Volatilization

The Henry's Law constant for vinyl methyl ether is estimated as 3.9X10-3 atm-cu m/mole(SRC) derived from its vapor pressure, 1316 mm Hg(1), and water solubility, 15,000 mg/L(2). This Henry's Law constant indicates that vinyl methyl ether is expected to volatilize 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 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 days(SRC). Vinyl methyl ether's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). Vinyl methyl ether is expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(1).
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