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CAS Number: 13678-69-8
SMILES : s1c(C(=O)C(=O)C)ccc1
CHEM : 1-thiophen-2-ylpropane-1,2-dione
MOL FOR: C7 H6 O2 S1
MOL WT : 154.18
------------------------------ 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) = 0.93
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 254.64 (Adapted Stein & Brown method)
Melting Pt (deg C): 57.34 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.0105 (Modified Grain method)
VP (Pa, 25 deg C) : 1.4 (Modified Grain method)
Subcooled liquid VP: 0.021 mm Hg (25 deg C, Mod-Grain method)
: 2.79 Pa (25 deg C, Mod-Grain method)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1.167e+004
log Kow used: 0.93 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 3898.4 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Thiophenes
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.12E-008 atm-m3/mole (2.15E-003 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: 1.825E-007 atm-m3/mole (1.849E-002 Pa-m3/mole)
VP: 0.0105 mm Hg (source: MPBPVP)
WS: 1.17E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.93 (KowWin est)
Log Kaw used: -6.062 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 6.992
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6741
Biowin2 (Non-Linear Model) : 0.6941
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8584 (weeks )
Biowin4 (Primary Survey Model) : 3.6253 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.2785
Biowin6 (MITI Non-Linear Model): 0.1757
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4702
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): 2.8 Pa (0.021 mm Hg)
Log Koa (Koawin est ): 6.992
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.07E-006
Octanol/air (Koa) model: 2.41E-006
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 3.87E-005
Mackay model : 8.57E-005
Octanol/air (Koa) model: 0.000193
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 8.7895 E-12 cm3/molecule-sec
Half-Life = 1.217 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 14.603 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
6.22E-005 (Junge-Pankow, Mackay avg)
0.000193 (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 : 9.571 L/kg (Kow method)
Log Koc: 0.981 (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) = -0.9593 days (HL = 0.1098 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.211 (BCF = 1.624)
Log BAF Arnot-Gobas method (upper trophic) = 0.211 (BAF = 1.624)
log Kow used: 0.93 (estimated)
Volatilization from Water:
Henry LC: 2.12E-008 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 3.429E+004 hours (1429 days)
Half-Life from Model Lake : 3.742E+005 hours (1.559E+004 days)
Removal In Wastewater Treatment:
Total removal: 1.88 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.79 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 0.387 29.2 1000
Water 31.8 360 1000
Soil 67.7 720 1000
Sediment 0.0717 3.24e+003 0
Persistence Time: 584 hr