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CAS Num: 068141-11-7

SMILES : O=C(Oc(ccc(c1)C)c1)CCCCC

CHEM : Hexanoic acid, 4-methylphenyl ester

MOL FOR: C13 H18 O2

MOL WT : 206.29

------------------------------ 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) = 4.10

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

Boiling Pt (deg C): 285.10 (Adapted Stein & Brown method)

Melting Pt (deg C): 48.59 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.00261 (Modified Grain method)

VP (Pa, 25 deg C) : 0.348 (Modified Grain method)

Subcooled liquid VP: 0.00429 mm Hg (25 deg C, Mod-Grain method)

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

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

Water Solubility at 25 deg C (mg/L): 12.77

log Kow used: 4.10 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 8.4228 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Esters

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

Bond Method : 2.22E-004 atm-m3/mole (2.25E+001 Pa-m3/mole)

Group Method: Incomplete

For Henry LC Comparison Purposes:

User-Entered Henry LC: not entered

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

HLC: 5.548E-005 atm-m3/mole (5.621E+000 Pa-m3/mole)

VP: 0.00261 mm Hg (source: MPBPVP)

WS: 12.8 mg/L (source: WSKOWWIN)

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

Log Kow used: 4.10 (KowWin est)

Log Kaw used: -2.042 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 6.142

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.9866

Biowin2 (Non-Linear Model) : 0.9986

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.1070 (weeks )

Biowin4 (Primary Survey Model) : 3.9796 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.7146

Biowin6 (MITI Non-Linear Model): 0.8237

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): -0.0389

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): 0.572 Pa (0.00429 mm Hg)

Log Koa (Koawin est ): 6.142

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

Mackay model : 5.24E-006

Octanol/air (Koa) model: 3.4E-007

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.000189

Mackay model : 0.000419

Octanol/air (Koa) model: 2.72E-005

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 8.3732 E-12 cm3/molecule-sec

Half-Life = 1.277 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 15.329 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

0.000304 (Junge-Pankow, Mackay avg)

2.72E-005 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 1165 L/kg (MCI method)

Log Koc: 3.066 (MCI method)

Koc : 1341 L/kg (Kow method)

Log Koc: 3.127 (Kow method)

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

Total Kb for pH > 8 at 25 deg C : 4.526E-001 L/mol-sec

Kb Half-Life at pH 8: 17.725 days

Kb Half-Life at pH 7: 177.248 days

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

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 2.373 (BCF = 236.1 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.4614 days (HL = 0.3457 days)

Log BCF Arnot-Gobas method (upper trophic) = 2.122 (BCF = 132.4)

Log BAF Arnot-Gobas method (upper trophic) = 2.122 (BAF = 132.4)

log Kow used: 4.10 (estimated)

Volatilization from Water:

Henry LC: 0.000222 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 5.254 hours

Half-Life from Model Lake : 177.7 hours (7.406 days)

Removal In Wastewater Treatment:

Total removal: 39.87 percent

Total biodegradation: 0.34 percent

Total sludge adsorption: 33.29 percent

Total to Air: 6.24 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 3.12 30.6 1000

Water 19.1 360 1000

Soil 77 720 1000

Sediment 0.772 3.24e+003 0

Persistence Time: 431 hr

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