Furfuryl Alcohol

CAS RN:98-00-0

Environmental Fate

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 34(SRC), determined from a log Kow of 0.28(2) and a regression-derived equation(3), indicates that furfuryl alcohol is expected to have very high mobility in soil(SRC). The pKa of furfuryl alcohol is 9.55(4), indicating that this compound will primarily exist in its neutral form in the environment(5). Volatilization of furfuryl alcohol from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 7.9X10-8 atm-cu m/mole(SRC), derived from its vapor pressure, 0.609 mm Hg(6), and an assigned value for water solubility of 1X10+6 mg/L (miscible)(7). Furfuryl alcohol may volatilize from dry soil surfaces(SRC) based upon its vapor pressure(6). Furfuryl alcohol may be susceptible to biodegradation in terrestrial environments based on the observed degradation of 75-79% in 2 weeks(8) and 97% in 5 days (acclimated for 20 days)(9) in aerobic screening tests with activated sludge inoculum.
AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 34(SRC), determined from a log Kow of 0.28(2) and a regression-derived equation(3), indicates that furfuryl alcohol 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 7.9X10-8 atm-cu m/mole(SRC), derived from its vapor pressure, 0.609 mm Hg(4), and an assigned value for water solubility of 1X10+6 mg/L (miscible)(5). The pKa of furfuryl alcohol is 9.55(6), indicating that this compound will primarily exist in its neutral form in the environment(7). According to a classification scheme(8), an estimated BCF of 3.2(SRC), from its log Kow(2) and a regression-derived equation(9), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Furfuryl alcohol may be susceptible to biodegradation in aquatic environments based on the observed degradation of 75-79% in 2 weeks(10) and 97% in 5 days (acclimated for 20 days)(11) in aerobic screening tests with activated sludge inoculum.
ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), furfuryl alcohol, which has a vapor pressure of 0.609 mm Hg at 25 deg C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase furfuryl alcohol 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 3.7 hours(SRC), calculated from its rate constant of 1.0X10-10 cu cm/molecule-sec at 25 deg C(SRC) that was derived using a structure estimation method(3). Furfuryl alcohol absorbs light at wavelengths >290 nm(4) and therefore may be susceptible to direct photolysis by sunlight(5).
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