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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

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