2-프로펜산,3-페닐-,페닐메틸에스테르,(2E)-

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 10,400(SRC), determined from a structure estimation method(2), indicates that benzyl cinnamate is expected to be immobile in soil(SRC). Volatilization of benzyl cinnamate from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 3.3X10-7 atm-cu m/mole(SRC), using a fragment constant estimation method(3). Benzyl cinnamate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 1X10-5 mm Hg(4).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 10,390(SRC), determined from a structure estimation method(2), indicates that benzyl cinnamate is 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 3.3X10-7 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). A base-catalyzed second-order hydrolysis rate constant of 3.8X10-2 L/mole-sec(SRC) was estimated using a structure estimation method(5); this corresponds to half-lives of 6 years and 211 days at pH values of 7 and 8, respectively(5). According to a classification scheme(6), an estimated BCF of 269(SRC), from an estimated log Kow of 4.06(7) and a regression derived equation(8), suggests the potential for bioconcentration in aquatic organisms is high(SRC).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), benzyl cinnamate, which has an estimated vapor pressure of 1X10-5 mm Hg at 25 °C(2), will exist in both the vapor and particulate phases in the ambient atmosphere. Vapor-phase benzyl cinnamate 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 14 hours for the cis-isomer and 13 hours for the trans-isomer of benzyl cinnamate(SRC), calculated from their rate constants of 28X10-12 and 31X10-12 cu cm/molecule-sec at 25 °C, respectively(SRC), determined using a structure estimation method(3). Particulate-phase benzyl cinnamate may be removed from the air by wet and dry deposition(SRC).

Using a structure estimation method based on molecular connectivity indices(1), the Koc for benzyl cinnamate can be estimated to be 10,400(SRC). According to a classification scheme(2), this estimated Koc value suggests that benzyl cinnamate is expected to be immobile in soil.

/IT IS/ REPORTED FOUND IN PERU AND TOLU BALSAM, IN SUMATRA AND PENANG BENZOIN, AND AS MAIN CONSTITUENT OF COPAIBA BALSAM.

PERUVIAN OR INDIAN BALSAM...CONSISTS CHIEFLY OF (50-60%) OF ESTERS OF CINNAMIC AND BENZOIC ACIDS, ESPECIALLY CINNAMEIN (BENZYL CINNAMATE). /BALSAM PERU/

Benzyl cinnamate is found in balsams of Peru, Tolu, Styrax, Copaiba and others(1).

An estimated BCF of 270 was calculated for benzyl cinnamate(SRC), using an estimated log Kow of 4.1(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is high(SRC).

The Henry's Law constant for benzyl cinnamate is estimated as 3.3X10-7 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that benzyl cinnamate is expected to be essentially nonvolatile from water surfaces(2). Benzyl cinnamate's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may not occur(SRC). Benzyl cinnamate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 1X10-5 mm Hg(3).

The rate constant for the vapor-phase reaction of benzyl cinnamate with photochemically-produced hydroxyl radicals has been estimated as 28X10-12 cu cm/molecule-sec at 25 °C for its cis-isomer and 31X10-12 cu cm/molecule-sec at 25 °C for its trans-isomer(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 14 and 13 hours for the cis and trans-isomers, respectively, at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). A base-catalyzed second-order hydrolysis rate constant of 3.8X10-2 L/mole-sec(SRC) was estimated using a structure estimation method(2); this corresponds to half-lives of 6 years and 211 days at pH values of 7 and 8, respectively(2).

NIOSH (NOES Survey 1981-1983) has statistically estimated that 2855 workers (1107 of these are female) are potentially exposed to benzyl cinnamate in the US(1). Occupational exposure to benzyl cinnamate may occur through inhalation and dermal contact with this compound at workplaces where benzyl cinnamate is produced or used(SRC).

Benzyl cinnamate is a food additive permitted for direct addition to food for human consumption as a synthetic flavoring substance and adjuvant in accordance with the following conditions: a) they are used in the minimum quantity required to produce their intended effect, and otherwise in accordance with all the principles of good manufacturing practice, and 2) they consist of one or more of the following, used alone or in combination with flavoring substances and adjuvants generally recognized as safe in food, prior-sanctioned for such use, or regulated by an appropriate section in this part.