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CAS Num: 000123-95-5

SMILES : O=C(OCCCC)CCCCCCCCCCCCCCCCC

CHEM : Octadecanoic acid, butyl ester

MOL FOR: C22 H44 O2

MOL WT : 340.60

------------------------------ 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) = 9.70

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

Boiling Pt (deg C): 383.80 (Adapted Stein & Brown method)

Melting Pt (deg C): 108.65 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.000186 (Modified Grain method)

VP (Pa, 25 deg C) : 0.0247 (Modified Grain method)

MP (exp database): 27 deg C

BP (exp database): 343 deg C

Subcooled liquid VP: 0.000193 mm Hg (25 deg C, Mod-Grain method)

: 0.0258 Pa (25 deg C, Mod-Grain method)

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

Water Solubility at 25 deg C (mg/L): 3.643e-005

log Kow used: 9.70 (estimated)

no-melting pt equation used

Water Sol (Exper. database match) = 1700 mg/L (25 deg C)

Exper. Ref: RIDDICK,JA ET AL. (1986)

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 3.2456e-005 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Esters

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

Bond Method : 3.82E-002 atm-m3/mole (3.87E+003 Pa-m3/mole)

Group Method: 7.92E-002 atm-m3/mole (8.02E+003 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: 2.288E+000 atm-m3/mole (2.318E+005 Pa-m3/mole)

VP: 0.000186 mm Hg (source: MPBPVP)

WS: 3.64E-005 mg/L (source: WSKOWWIN)

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

Log Kow used: 9.70 (KowWin est)

Log Kaw used: 0.194 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 9.506

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.9764

Biowin2 (Non-Linear Model) : 0.9974

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.1834 (weeks )

Biowin4 (Primary Survey Model) : 4.1234 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.9823

Biowin6 (MITI Non-Linear Model): 0.9657

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.7071

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): 0.0257 Pa (0.000193 mm Hg)

Log Koa (Koawin est ): 9.506

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

Mackay model : 0.000117

Octanol/air (Koa) model: 0.000787

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.00419

Mackay model : 0.00924

Octanol/air (Koa) model: 0.0592

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 26.0222 E-12 cm3/molecule-sec

Half-Life = 0.411 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 4.932 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

0.00672 (Junge-Pankow, Mackay avg)

0.0592 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 2.873E+005 L/kg (MCI method)

Log Koc: 5.458 (MCI method)

Koc : 1.678E+006 L/kg (Kow method)

Log Koc: 6.225 (Kow method)

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

Total Kb for pH > 8 at 25 deg C : 2.417E-002 L/mol-sec

Kb Half-Life at pH 8: 331.881 days

Kb Half-Life at pH 7: 9.086 years

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

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 2.203 (BCF = 159.4 L/kg wet-wt)

Log Biotransformation Half-life (HL) = 0.8295 days (HL = 6.753 days)

Log BCF Arnot-Gobas method (upper trophic) = 0.545 (BCF = 3.505)

Log BAF Arnot-Gobas method (upper trophic) = 2.314 (BAF = 206.2)

log Kow used: 9.70 (estimated)

Volatilization from Water:

Henry LC: 0.0792 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 1.897 hours

Half-Life from Model Lake : 175.4 hours (7.31 days)

Removal In Wastewater Treatment:

Total removal: 94.04 percent

Total biodegradation: 0.78 percent

Total sludge adsorption: 93.25 percent

Total to Air: 0.01 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 0.964 9.86 1000

Water 25.1 360 1000

Soil 73.1 720 1000

Sediment 0.845 3.24e+003 0

Persistence Time: 452 hr

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