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CAS Number: 766-39-2
SMILES : O=C1OC(=O)C(C)=C1C
CHEM : 2,5-Furandione, 3,4-dimethyl-
MOL FOR: C6 H6 O3
MOL WT : 126.11
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Vapor Pressure (mm Hg) : ------
Water Solubility (mg/L): ------
Henry LC (atm-m3/mole) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.67 estimate) = 2.71
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 194.76 (Adapted Stein & Brown method)
Melting Pt (deg C): -16.58 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.0215 (Modified Grain method)
VP (Pa, 25 deg C) : 2.87 (Modified Grain method)
MP (exp database): 96 deg C
BP (exp database): 223 deg C
Subcooled liquid VP: 0.105 mm Hg (25 deg C, Mod-Grain method)
: 14 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 458.7
log Kow used: 2.71 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1.3481e+005 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 9.65E-006 atm-m3/mole (9.78E-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: 7.778E-006 atm-m3/mole (7.881E-001 Pa-m3/mole)
VP: 0.0215 mm Hg (source: MPBPVP)
WS: 459 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.71 (KowWin est)
Log Kaw used: -3.404 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 6.114
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6875
Biowin2 (Non-Linear Model) : 0.7717
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9205 (weeks )
Biowin4 (Primary Survey Model) : 3.6658 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3378
Biowin6 (MITI Non-Linear Model): 0.2542
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.6769
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 14 Pa (0.105 mm Hg)
Log Koa (Koawin est ): 6.114
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 2.14E-007
Octanol/air (Koa) model: 3.19E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 7.74E-006
Mackay model : 1.71E-005
Octanol/air (Koa) model: 2.55E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 13.7470 E-12 cm3/molecule-sec
Half-Life = 0.778 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 9.337 Hrs
Ozone Reaction:
OVERALL Ozone Rate Constant = 7.393750 E-17 cm3/molecule-sec
Half-Life = 0.155 Days (at 7E11 mol/cm3)
Half-Life = 3.720 Hrs
Fraction sorbed to airborne particulates (phi):
1.24E-005 (Junge-Pankow, Mackay avg)
2.55E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 1 L/kg (MCI method)
Log Koc: 0.000 (MCI method)
Koc : 92.37 L/kg (Kow method)
Log Koc: 1.966 (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 = 1.457 (BCF = 28.66 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.5363 days (HL = 0.2908 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.568 (BCF = 36.98)
Log BAF Arnot-Gobas method (upper trophic) = 1.568 (BAF = 36.98)
log Kow used: 2.71 (estimated)
Volatilization from Water:
Henry LC: 9.65E-006 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 69.28 hours (2.887 days)
Half-Life from Model Lake : 849.9 hours (35.41 days)
Removal In Wastewater Treatment:
Total removal: 4.37 percent
Total biodegradation: 0.11 percent
Total sludge adsorption: 3.74 percent
Total to Air: 0.53 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 0.523 3.1 1000
Water 47.6 360 1000
Soil 51.7 720 1000
Sediment 0.0892 3.24e+003 0
Persistence Time: 321 hr