| Umweltverhalten | TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 19(SRC), determined from a water solubility of 18,900 mg/l(2) and a regression-derived equation(3), indicates that 1,2-bis(2-chloroethoxy)ethane is expected to have very high mobility in soil(SRC). Volatilization of 1,2-bis(2-chloroethoxy)ethane from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 7.8X10-7 atm-cu m/mole(SRC), derived from its vapor pressure, 0.06 mm Hg(2), and water solubility, 18,900 mg/l(2). 1,2-Bis(2-chloroethoxy)ethane is not expected to volatilize from dry soil surfaces(SRC) based upon a its vapor pressure(2). 1,2-Bis(2-chloroethoxy)ethane is moderately resistent (eg, 2 to 18 months) to biodegradation(4). The compound was not degraded by bacteria isolated from soil enriched with triethylene glycol(5).AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 19(SRC), determined from a water solubility of 18,900 mg/l(2) and a regression-derived equation(3), indicates that 1,2-bis(2-chloroethoxy)ethane is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 7.8X10-7 atm-cu m/mole(SRC), derived from its vapor pressure, 0.06 mm Hg(2), and its water solubility(2). According to a classification scheme(4), an estimated BCF of 2(SRC), from its water solubility(2) and a regression-derived equation(5), suggests the potential for bioconcentration in aquatic organisms is low(SRC). 1,2-Bis(2-chloroethoxy)ethane is moderately resistent (eg, 2 to 18 months) to biodegradation(6). The compound was not degraded by bacteria isolated from soil enriched with triethylene glycol(7).ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1,2-bis(2-chloroethoxy)ethane, which has a vapor pressure of 0.06 mm Hg at 20 °C(SRC), determined from a fragment constant method(2), is expected to exist solely as a vapor in the ambient atmosphere(SRC). Vapor-phase 1,2-bis(2-chloroethoxy)ethane 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 1.8 days(SRC), calculated from its rate constant of 8.9X10-12 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). |
|---|
