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CAS Num: 000108-59-8
SMILES : O=C(OC)CC(=O)OC
CHEM : Propanedioic acid, dimethyl ester
MOL FOR: C5 H8 O4
MOL WT : 132.12
------------------------------ 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) = -0.09
Log Kow (Exper. database match) = -0.05
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 121.41 (Adapted Stein & Brown method)
Melting Pt (deg C): -107.58 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.902 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 120 (Mean VP of Antoine & Grain methods)
MP (exp database): -61.9 deg C
BP (exp database): 181.4 deg C
VP (exp database): 9.00E-01 mm Hg (1.20E+002 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 9.951e+004
log Kow used: -0.05 (expkow database)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 2.1984e+005 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.17E-007 atm-m3/mole (4.23E-002 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: 1.576E-006 atm-m3/mole (1.597E-001 Pa-m3/mole)
VP: 0.902 mm Hg (source: MPBPVP)
WS: 9.95E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: -0.05 (exp database)
Log Kaw used: -4.768 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.718
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 1.0330
Biowin2 (Non-Linear Model) : 0.9999
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.1876 (weeks )
Biowin4 (Primary Survey Model) : 4.1150 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 1.0568
Biowin6 (MITI Non-Linear Model): 0.9832
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.0466
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): 120 Pa (0.9 mm Hg)
Log Koa (Koawin est ): 4.718
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 2.5E-008
Octanol/air (Koa) model: 1.28E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 9.03E-007
Mackay model : 2E-006
Octanol/air (Koa) model: 1.03E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.5250 E-12 cm3/molecule-sec
Half-Life = 20.375 Days (12-hr day; 1.5E6 OH/cm3)
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
1.45E-006 (Junge-Pankow, Mackay avg)
1.03E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 1.572 L/kg (MCI method)
Log Koc: 0.196 (MCI method)
Koc : 5.838 L/kg (Kow method)
Log Koc: 0.766 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 3.682E+000 L/mol-sec
Kb Half-Life at pH 8: 2.179 days
Kb Half-Life at pH 7: 21.790 days
(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) = -2.8979 days (HL = 0.001265 days)
Log BCF Arnot-Gobas method (upper trophic) = -0.041 (BCF = 0.9102)
Log BAF Arnot-Gobas method (upper trophic) = -0.041 (BAF = 0.9102)
log Kow used: -0.05 (expkow database)
Volatilization from Water:
Henry LC: 4.17E-007 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1615 hours (67.29 days)
Half-Life from Model Lake : 1.771E+004 hours (738.1 days)
Removal In Wastewater Treatment:
Total removal: 1.87 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.76 percent
Total to Air: 0.02 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 4.5 489 1000
Water 40.9 360 1000
Soil 54.6 720 1000
Sediment 0.0775 3.24e+003 0
Persistence Time: 448 hr