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CAS Num: 000111-17-1


CHEM : Propanoic acid, 3,3 -thiobis-

MOL FOR: C6 H10 O4 S1

MOL WT : 178.20

------------------------------ 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) = -0.18

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

Boiling Pt (deg C): 346.89 (Adapted Stein & Brown method)

Melting Pt (deg C): 126.62 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 1.43E-005 (Modified Grain method)

VP (Pa, 25 deg C) : 0.0019 (Modified Grain method)

MP (exp database): 129 deg C

Subcooled liquid VP: 0.000156 mm Hg (25 deg C, Mod-Grain method)

: 0.0208 Pa (25 deg C, Mod-Grain method)

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

Water Solubility at 25 deg C (mg/L): 1.974e+005

log Kow used: -0.18 (estimated)

no-melting pt equation used

Water Sol (Exper. database match) = 3.72e+004 mg/L (26 deg C)

Exper. Ref: MERCK INDEX (1996)

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 41027 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 : 7.66E-014 atm-m3/mole (7.76E-009 Pa-m3/mole)

Group Method: 1.99E-015 atm-m3/mole (2.01E-010 Pa-m3/mole)

For Henry LC Comparison Purposes:

User-Entered Henry LC: not entered

Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:

HLC: 1.699E-011 atm-m3/mole (1.721E-006 Pa-m3/mole)

VP: 1.43E-005 mm Hg (source: MPBPVP)

WS: 1.97E+005 mg/L (source: WSKOWWIN)

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

Log Kow used: -0.18 (KowWin est)

Log Kaw used: -11.504 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 11.324

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.8081

Biowin2 (Non-Linear Model) : 0.8538

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.5346 (days-weeks )

Biowin4 (Primary Survey Model) : 4.3618 (hours-days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.7420

Biowin6 (MITI Non-Linear Model): 0.7971

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 1.3136

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): 0.0208 Pa (0.000156 mm Hg)

Log Koa (Koawin est ): 11.324

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

Mackay model : 0.000144

Octanol/air (Koa) model: 0.0518

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 0.00518

Mackay model : 0.0114

Octanol/air (Koa) model: 0.805

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 22.3848 E-12 cm3/molecule-sec

Half-Life = 0.478 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 5.734 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Reaction With Nitrate Radicals May Be Important!

Fraction sorbed to airborne particulates (phi):

0.00829 (Junge-Pankow, Mackay avg)

0.805 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 44.37 L/kg (MCI method)

Log Koc: 1.647 (MCI method)

Koc : 1.138 L/kg (Kow method)

Log Koc: 0.056 (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) = -1.1910 days (HL = 0.06442 days)

Log BCF Arnot-Gobas method (upper trophic) = -0.025 (BCF = 0.9442)

Log BAF Arnot-Gobas method (upper trophic) = -0.025 (BAF = 0.9442)

log Kow used: -0.18 (estimated)

Volatilization from Water:

Henry LC: 1.99E-015 atm-m3/mole (estimated by Group SAR Method)

Half-Life from Model River: 3.927E+011 hours (1.636E+010 days)

Half-Life from Model Lake : 4.285E+012 hours (1.785E+011 days)

Removal In Wastewater Treatment:

Total removal: 1.85 percent

Total biodegradation: 0.09 percent

Total sludge adsorption: 1.76 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 6.18e-008 11.5 1000

Water 22.4 208 1000

Soil 77.5 416 1000

Sediment 0.0742 1.87e+003 0

Persistence Time: 442 hr

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