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CAS Number: 1077-28-7

SMILES : S1SC(CCCCC(=O)O)CC1

CHEM :

MOL FOR: C8 H14 O2 S2

MOL WT : 206.32

------------------------------ EPI SUMMARY (v4.10) --------------------------

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 v1.68 estimate) = 3.40

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

Boiling Pt (deg C): 333.64 (Adapted Stein & Brown method)

Melting Pt (deg C): 119.15 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.949 (Modified Grain method)

VP (Pa, 25 deg C) : 127 (Modified Grain method)

MP (exp database): 60.5 deg C

BP (exp database): 162.5 deg C

Subcooled liquid VP: 2.03 mm Hg (25 deg C, Mod-Grain method)

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

Water Solubility Estimate from Log Kow (WSKOW v1.42):

Water Solubility at 25 deg C (mg/L): 126.6

log Kow used: 3.40 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 191.91 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 : 1.64E-008 atm-m3/mole (1.66E-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: 2.035E-003 atm-m3/mole (2.062E+002 Pa-m3/mole)

VP: 0.949 mm Hg (source: MPBPVP)

WS: 127 mg/L (source: WSKOWWIN)

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

Log Kow used: 3.40 (KowWin est)

Log Kaw used: -6.174 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 9.574

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.7220

Biowin2 (Non-Linear Model) : 0.6731

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.1078 (weeks )

Biowin4 (Primary Survey Model) : 3.9356 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.5291

Biowin6 (MITI Non-Linear Model): 0.4417

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.9262

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): 271 Pa (2.03 mm Hg)

Log Koa (Koawin est ): 9.574

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

Mackay model : 1.11E-008

Octanol/air (Koa) model: 0.00092

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 4E-007

Mackay model : 8.87E-007

Octanol/air (Koa) model: 0.0686

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 251.9117 E-12 cm3/molecule-sec

Half-Life = 0.042 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 0.510 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

6.44E-007 (Junge-Pankow, Mackay avg)

0.0686 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 98.19 L/kg (MCI method)

Log Koc: 1.992 (MCI method)

Koc : 108.7 L/kg (Kow method)

Log Koc: 2.036 (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 v3.01):

Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -0.3399 days (HL = 0.4572 days)

Log BCF Arnot-Gobas method (upper trophic) = 2.045 (BCF = 110.8)

Log BAF Arnot-Gobas method (upper trophic) = 2.045 (BAF = 110.8)

log Kow used: 3.40 (estimated)

Volatilization from Water:

Henry LC: 1.64E-008 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 5.128E+004 hours (2137 days)

Half-Life from Model Lake : 5.595E+005 hours (2.331E+004 days)

Removal In Wastewater Treatment:

Total removal: 10.95 percent

Total biodegradation: 0.17 percent

Total sludge adsorption: 10.78 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 0.0804 1.02 1000

Water 25.8 360 1000

Soil 73.9 720 1000

Sediment 0.149 3.24e+003 0

Persistence Time: 494 hr

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