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CAS Num: 000328-50-7

SMILES : O=C(O)C(=O)CCC(=O)O

CHEM : Pentanedioic acid, 2-oxo-

MOL FOR: C5 H6 O5

MOL WT : 146.10

------------------------------ 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) = -2.08

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

Boiling Pt (deg C): 323.26 (Adapted Stein & Brown method)

Melting Pt (deg C): 117.34 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 7.18E-005 (Modified Grain method)

VP (Pa, 25 deg C) : 0.00957 (Modified Grain method)

MP (exp database): 115.5 deg C

Subcooled liquid VP: 0.000563 mm Hg (25 deg C, Mod-Grain method)

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

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

Water Solubility at 25 deg C (mg/L): 1e+006

log Kow used: -2.08 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 8.3106e+005 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Neutral Organics-acid

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

Bond Method : 2.15E-014 atm-m3/mole (2.18E-009 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: 1.380E-011 atm-m3/mole (1.399E-006 Pa-m3/mole)

VP: 7.18E-005 mm Hg (source: MPBPVP)

WS: 1E+006 mg/L (source: WSKOWWIN)

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

Log Kow used: -2.08 (KowWin est)

Log Kaw used: -12.056 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 9.976

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.8234

Biowin2 (Non-Linear Model) : 0.9021

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.6055 (days-weeks )

Biowin4 (Primary Survey Model) : 4.4081 (hours-days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.7386

Biowin6 (MITI Non-Linear Model): 0.8078

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 1.2616

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): 0.0751 Pa (0.000563 mm Hg)

Log Koa (Koawin est ): 9.976

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

Mackay model : 4E-005

Octanol/air (Koa) model: 0.00232

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.00144

Mackay model : 0.00319

Octanol/air (Koa) model: 0.157

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 4.6336 E-12 cm3/molecule-sec

Half-Life = 2.308 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 27.700 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

0.00231 (Junge-Pankow, Mackay avg)

0.157 (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 : 0.05969 L/kg (Kow method)

Log Koc: -1.224 (Kow method)

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

Rate constants can NOT be estimated for this structure!

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) = -1.7433 days (HL = 0.01806 days)

Log BCF Arnot-Gobas method (upper trophic) = -0.049 (BCF = 0.8934)

Log BAF Arnot-Gobas method (upper trophic) = -0.049 (BAF = 0.8934)

log Kow used: -2.08 (estimated)

Volatilization from Water:

Henry LC: 2.15E-014 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 3.292E+010 hours (1.371E+009 days)

Half-Life from Model Lake : 3.591E+011 hours (1.496E+010 days)

Removal In Wastewater Treatment:

Total removal: 1.85 percent

Total biodegradation: 0.09 percent

Total sludge adsorption: 1.75 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 7.09e-007 55.4 1000

Water 28.1 208 1000

Soil 71.8 416 1000

Sediment 0.0592 1.87e+003 0

Persistence Time: 414 hr

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