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CAS Num: 000539-88-8
SMILES : O=C(OCC)CCC(=O)C
CHEM : Pentanoic acid, 4-oxo-, ethyl ester
MOL FOR: C7 H12 O3
MOL WT : 144.17
------------------------------ 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) = 0.29
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 189.88 (Adapted Stein & Brown method)
Melting Pt (deg C): -7.52 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.27 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 36 (Mean VP of Antoine & Grain methods)
MP (exp database): < 25 deg C
BP (exp database): 205.8 deg C
VP (exp database): 2.08E-01 mm Hg (2.77E+001 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 4.566e+004
log Kow used: 0.29 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 61223 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.08E-007 atm-m3/mole (2.11E-002 Pa-m3/mole)
Group Method: 2.94E-008 atm-m3/mole (2.98E-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: 1.122E-006 atm-m3/mole (1.137E-001 Pa-m3/mole)
VP: 0.27 mm Hg (source: MPBPVP)
WS: 4.57E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.29 (KowWin est)
Log Kaw used: -5.070 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 5.360
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8599
Biowin2 (Non-Linear Model) : 0.9899
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9983 (weeks )
Biowin4 (Primary Survey Model) : 3.8465 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.8938
Biowin6 (MITI Non-Linear Model): 0.9512
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.5349
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): 27.7 Pa (0.208 mm Hg)
Log Koa (Koawin est ): 5.360
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.08E-007
Octanol/air (Koa) model: 5.62E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 3.91E-006
Mackay model : 8.65E-006
Octanol/air (Koa) model: 4.5E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 3.7545 E-12 cm3/molecule-sec
Half-Life = 2.849 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 34.186 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
6.28E-006 (Junge-Pankow, Mackay avg)
4.5E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 10 L/kg (MCI method)
Log Koc: 1.000 (MCI method)
Koc : 16.43 L/kg (Kow method)
Log Koc: 1.216 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 4.465E-002 L/mol-sec
Kb Half-Life at pH 8: 179.673 days
Kb Half-Life at pH 7: 4.919 years
(Total Kb applies only to esters, carbmates, alkyl halides)
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -2.1961 days (HL = 0.006366 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.029 (BCF = 0.9345)
Log BAF Arnot-Gobas method (upper trophic) = -0.029 (BAF = 0.9345)
log Kow used: 0.29 (estimated)
Volatilization from Water:
Henry LC: 2.94E-008 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 2.391E+004 hours (996.4 days)
Half-Life from Model Lake : 2.61E+005 hours (1.087E+004 days)
Removal In Wastewater Treatment:
Total removal: 1.86 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.76 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 0.55 68.4 1000
Water 31.6 360 1000
Soil 67.8 720 1000
Sediment 0.0712 3.24e+003 0
Persistence Time: 592 hr