Allyl Chloride

CAS RN: 107-05-1

Environmental Fate

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 51(SRC), determined from a water solubility of 3,370 mg/L(2) and a regression-derived equation(3), indicates that allyl chloride is expected to have high mobility in soil(SRC). Volatilization of allyl chloride from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.10X10-2 atm-cu m/mole(SRC), using a vapor pressure of 368 mm Hg(4), and water solubility of 337 mg/L(5). Allyl chloride is expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(4). A BOD of 62% in the Japanese MITI test(6) indicates that biodegradation is expected to be an important environmental fate process in soil(SRC).
AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 51(SRC), determined from a water solubility of 3,370 mg/L(2) and a regression-derived equation(3), indicates that allyl chloride is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 1.10X10-2 atm-cu m/ mol derived from it's vapor pressure, 368 mm Hg(4), and water solubility, 337 mg/L(5). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 3 hours and 3 days, respectively(SRC). According to a classification scheme(6), a measured BCF range of <0.14 to <1.3(7), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Allyl chloride will undergo hydrolysis at pH=7 with a half-life of approximately 8 days(8). Based on a BOD of 62% in the Japanese MITI test(7), biodegradation is expected to be an important environmental fate process in water(SRC).
ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), allyl chloride, which has a vapor pressure of 368 mm Hg at 25 deg C(2) is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase allyl chloride is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 0.8 days(SRC), calculated from its rate constant of 1.70X10-11 cu cm/molecule-sec at 25 deg C(3). Allyl chloride does not contain chromophores that absorb at wavelengths >290 nm and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).
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