AQUATIC FATE: Based on a recommended classification scheme(1), an estimated Koc value of 57(SRC), determined from an experimental log Kow of 0.70(2,SRC) and a recommended regression-derived equation(3), indicates that gallic acid is not expected to adsorb to suspended solids and sediment in water(SRC). Gallic acid is not expected to volatilize from water surfaces(3,SRC) based on an estimated Henry's Law constant of 8.5X10-20 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). According to a classification scheme(5), an estimated BCF value of 2(3,SRC), from an experimental log Kow(2,SRC), suggests that bioconcentration in aquatic organisms is low(SRC). An aerobic biodegradation study of gallic acid, based on COD measurements, using an activated sludge inoculum of 100 mg/l and an initial pyrogallic acid concentration of 200 ppm, indicated 90.5 percent COD removal over a period of 5 days at pH=7.2 and 20 deg C(6). Under both aerobic and anaerobic conditions, gallic acid is mineralized to methane and carbon dioxide in the presence of certain Rhodospirillaceae(7).