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CAS Num: 029806-73-3

SMILES : O=C(OCC(CCCC)CC)CCCCCCCCCCCCCCC

CHEM : Hexadecanoic acid, 2-ethylhexyl ester

MOL FOR: C24 H48 O2

MOL WT : 368.65

------------------------------ EPI SUMMARY (v4.00) --------------------------

Physical Property Inputs:

Water Solubility (mg/L): ------

Vapor Pressure (mm Hg) : ------

Henry LC (atm-m3/mole) : ------

Log Kow (octanol-water): ------

Boiling Point (deg C) : ------

Melting Point (deg C) : ------

Log Octanol-Water Partition Coef (SRC):

Log Kow (KOWWIN v1.67 estimate) = 10.61

Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):

Boiling Pt (deg C): 400.01 (Adapted Stein & Brown method)

Melting Pt (deg C): 117.16 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 1.02E-006 (Modified Grain method)

VP (Pa, 25 deg C) : 0.000136 (Modified Grain method)

Subcooled liquid VP: 8.31E-006 mm Hg (25 deg C, Mod-Grain method)

: 0.00111 Pa (25 deg C, Mod-Grain method)

Water Solubility Estimate from Log Kow (WSKOW v1.41):

Water Solubility at 25 deg C (mg/L): 4.127e-006

log Kow used: 10.61 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 4.9646e-006 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Esters

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method : 6.73E-002 atm-m3/mole (6.82E+003 Pa-m3/mole)

Group Method: 1.90E-001 atm-m3/mole (1.92E+004 Pa-m3/mole)

For Henry LC Comparison Purposes:

User-Entered Henry LC: not entered

Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:

HLC: 1.199E-001 atm-m3/mole (1.215E+004 Pa-m3/mole)

VP: 1.02E-006 mm Hg (source: MPBPVP)

WS: 4.13E-006 mg/L (source: WSKOWWIN)

Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:

Log Kow used: 10.61 (KowWin est)

Log Kaw used: 0.440 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 10.170

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.9631

Biowin2 (Non-Linear Model) : 0.9961

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.1214 (weeks )

Biowin4 (Primary Survey Model) : 4.0830 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.8486

Biowin6 (MITI Non-Linear Model): 0.9204

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.4617

Ready Biodegradability Prediction: YES

Hydrocarbon Biodegradation (BioHCwin v1.01):

Structure incompatible with current estimation method!

Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:

Vapor pressure (liquid/subcooled): 0.00111 Pa (8.31E-006 mm Hg)

Log Koa (Koawin est ): 10.170

Kp (particle/gas partition coef. (m3/ug)):

Mackay model : 0.00271

Octanol/air (Koa) model: 0.00363

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.0891

Mackay model : 0.178

Octanol/air (Koa) model: 0.225

Atmospheric Oxidation (25 deg C) [AopWin v1.92]:

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 29.5353 E-12 cm3/molecule-sec

Half-Life = 0.362 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 4.346 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

0.134 (Junge-Pankow, Mackay avg)

0.225 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 8.793E+005 L/kg (MCI method)

Log Koc: 5.944 (MCI method)

Koc : 5.348E+006 L/kg (Kow method)

Log Koc: 6.728 (Kow method)

Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:

Total Kb for pH > 8 at 25 deg C : 1.553E-002 L/mol-sec

Kb Half-Life at pH 8: 1.414 years

Kb Half-Life at pH 7: 14.145 years

(Total Kb applies only to esters, carbmates, alkyl halides)

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 1.757 (BCF = 57.18 L/kg wet-wt)

Log Biotransformation Half-life (HL) = 1.0907 days (HL = 12.32 days)

Log BCF Arnot-Gobas method (upper trophic) = 0.169 (BCF = 1.475)

Log BAF Arnot-Gobas method (upper trophic) = 2.100 (BAF = 126)

log Kow used: 10.61 (estimated)

Volatilization from Water:

Henry LC: 0.19 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 1.965 hours

Half-Life from Model Lake : 182.4 hours (7.601 days)

Removal In Wastewater Treatment:

Total removal: 94.04 percent

Total biodegradation: 0.78 percent

Total sludge adsorption: 93.25 percent

Total to Air: 0.00 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 0.807 8.69 1000

Water 24.7 360 1000

Soil 74.2 720 1000

Sediment 0.314 3.24e+003 0

Persistence Time: 463 hr

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