3-Ethylphenol

122.16

122.16

1857002

210-627-3

0G9ZK222JX

8873

DTXSID0022480

COLORLESS LIQUID

2907199090

20.2

2.40

Liquid

1.0283 g/cm³ @ Temp: 20 °C

-4 °C

218.4 °C @ Press: 760 Torr

202 °F

1.537

SLIGHTLY soluble IN WATER, CHLOROFORM; VERY soluble IN ALCOHOL, ETHER

Store in a cool, dry place. Keep containers tightly closed.

0.05 mm Hg at 25 deg C

6.28e-07 atm-m3/mole

pKa = 9.9

III

8

UN 3145 8/PG 3

3

20/21/22-36/37/38-34

26-37/39-36/37-45-36/37/39

Xn,C

Stable under normal temperatures and pressures.

P280-P305 + P351 + P338-P310

H302 + H312 + H332-H314

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.

|Danger|H301 (39.59%): Toxic if swallowed [Danger Acute toxicity, oral]|P260, P261, P264, P270, P271, P280, P301+P310, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 197 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H302: Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P280, P301+P312, P305+P351+P338, P310, P330, and P501|Warning|P260, P264, P270, P301+P312, P309+P311, P330, P405, and P501

Final effluent collected from the Los Angeles County wastewater treatment plant contained 3-ethylphenol at an average concentration of 15 ug/L(1). 3-Ethylphenol was detected at unreported concentrations in a groundwater plume emanating from the Hipps Road Landfill, Florida(2). 3-Ethylphenol was detected in industrial wastewater from the following industries: petroleum refining (1 of 21 extracts), organic chemicals (1 of 31 extracts), and publicly-owned treatment works (1 in 44 extracts)(3). 3- and 4-ethylphenol (mixed) were detected in cigarette smoke at 1.2-2.8 mg/100 cigarettes(4). 3-Ethylphenol was detected in wastewater from the gasification of Indian Head lignite coal(5).

A xylenol fraction boiling between 216 and 218 °C containing predominantly 3- and 4-ethylphenol is obtained from brown coal low-temperature tar and used in the varnish industry.|Volcanic ash from Mount St. Helens, following th May 18, 1980 eruption, contained 3-ethylphenol(1).

3-Ethylphenol's production and use in the manufacture of photochemicals and varnishes(1), may result in its release to the environment through various waste streams(SRC). 3-Ethylphenol is also released in effluent streams from coal gasification plants(3) and from cigarette smoke(2).

TERRESTRIAL FATE: Based on a recommended classification scheme(1), an estimated Koc value of 480(SRC), determined from a measured log Kow(2) and a recommended regression-derived equation(3), indicates that 3-ethylphenol will have moderate mobility in soil(SRC). Based on limited data, biodegradation of this compound is likely. A system where water was passed through contaminated soil (initial 3-ethylphenol concn = 73 ug/L) and then through a upflow aerated column was capable of 93% removal in 37 days(4). 3-Ethylphenol's measured and estimated values for vapor pressure(5) and Henry's Law constant(6,SRC), respectively, indicate that volatilization from dry and moist soil surfaces is possible, but will not be a major fate process for this compound(SRC).|AQUATIC FATE: Based on a recommended classification scheme(1), an estimated Koc value of 480(SRC), determined from a measured log Kow(2) and a recommended regression-derived equation(3), indicates that 3-ethylphenol may adsorb to suspended solids and sediment(SRC) in the water. Based on limited data, biodegradation of this compound is likely. A system where water was passed through contaminated soil (initial 3-ethylphenol concn = 73 ug/L) and then through a upflow aerated column was capable of 93% removal in 37 days(4). 3-Ethylphenol should volatilize from water surfaces based on an estimated Henry's Law constant of 1.1X10-6 atm-cu m/mole(SRC), developed using a fragment constant estimation method(5). Estimated half-lives for a model river and model lake are 37 and 274 days, respectively(3,SRC). An estimated BCF value of 40(3,SRC), from an experimental log Kow(2), suggests that 3-ethylphenol may bioconcentrate in aquatic organisms(SRC) according to a recommended classification scheme(6).|ATMOSPHERIC FATE: According to a suggested classification scheme(1), a measured vapor pressure of 0.05 mm Hg at 25 °C(2) indicates that 3-ethylphenol will mainly exist in the vapor phase in the ambient atmosphere. Vapor-phase 3-ethylphenol 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 about 5 hours(3,SRC).

The rate constant for the vapor-phase reaction of 3-ethylphenol with photochemically produced hydroxyl radicals has been estimated as 8.4X10-11 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1,SRC). This corresponds to an atmospheric half-life of about 5 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1,SRC). 3-Ethylphenol has a measured pKa of 9.9, indicating that under most environmental conditions this compound will exist mainly as the non-dissociated form(2).

An estimated BCF value of 40 was calculated for 3-ethylphenol(SRC), using a measured log Kow of 2.40(1) and a recommended regression-derived equation(2). According to a recommended classification scheme(3), this BCF value suggests that bioconcentration in aquatic organisms may be an important fate process(SRC).

The Koc of 3-ethylphenol is estimated as approximately 480(SRC), using a measured log Kow of 2.40(1) and a regression-derived equation(2,SRC). According to a recommended classification scheme(3), this estimated Koc value suggests that 3-ethylphenol has moderate mobility in soil(SRC).

The Henry's Law constant for 3-ethylphenol is estimated as 1.1X10-6 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This value indicates that 3-ethylphenol will volatilize from water surfaces(2,SRC). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec) is estimated as approximately 37 days(2,SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec) is estimated as approximately 274 days(2,SRC). 3-Ethylphenol's values for vapor pressure(4) and Henry's Law constant(1,SRC) indicate that volatilization from dry and moist soil surfaces is possible, but not likely to be a major fate process for this compound(SRC).

GROUNDWATER: 3-Ethylphenol was detected in a leachate sample from Southington landfill, Connecticut at 0.2 mg/L(1).

The general population may be exposed to 3-ethylphenol by inhalation of cigarette smoke or dermal contact with products containing this compound. (SRC)

3-ethylphenol has known human metabolites that include 3-Ethylphenyl sulfate.

3-ethylphenol

All other chemical product and preparation manufacturing|Phenol, 3-ethyl-: ACTIVE

VOLCANIC ASH, SURFACE-WATER & BOTTOM-MATERIAL SAMPLES OBTAINED IN THE VICINITY OF MOUNT ST HELENS AFTER THE MAY 18, 1980, ERUPTION WERE ANALYZED FOR ORGANIC CONTAMINANTS USING CAPILLARY GAS CHROMATOGRAPHY-MASS SPECTROMETRY-COMPUTER TECHNIQUES. 3-ETHYLPHENOL WAS IDENTIFIED AS AN ORGANIC CONTAMINANT.|THE SEPARATION OF 13 ISOMERIC ALKYLPHENOLS, INCLUDING 3-ETHYLPHENOL, WAS STUDIED BY HIGH-PERFORMANCE LIQUID (HPLC), GAS-LIQUID (GLC) & HIGH-PERFORMANCE THIN-LAYER CHROMATOGRAPHIC (HPTLC) TECHNIQUES.|3-Ethylphenol was measured in environmental waters using reverse-phase liquid chromatography with electrochemical detection.|3-Ethylphenol was measured in wastewater from coal gasification processes using solvent extraction in acid followed by glass capillary gas chromatography in combination with several detectors (ie. FID, MS-DS)

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