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CAS Num: 013532-18-8
SMILES : O=C(OC)CCSC
CHEM : Propanoic acid, 3-(methylthio)-, methyl ester
MOL FOR: C5 H10 O2 S1
MOL WT : 134.19
------------------------------ 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) = 0.95
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 167.21 (Adapted Stein & Brown method)
Melting Pt (deg C): -33.17 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 1.79 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 238 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1.364e+004
log Kow used: 0.95 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 13704 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 2.48E-006 atm-m3/mole (2.52E-001 Pa-m3/mole)
Group Method: 7.73E-007 atm-m3/mole (7.84E-002 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: 2.317E-005 atm-m3/mole (2.348E+000 Pa-m3/mole)
VP: 1.79 mm Hg (source: MPBPVP)
WS: 1.36E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 0.95 (KowWin est)
Log Kaw used: -3.994 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.944
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8578
Biowin2 (Non-Linear Model) : 0.9944
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0428 (weeks )
Biowin4 (Primary Survey Model) : 3.8831 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7563
Biowin6 (MITI Non-Linear Model): 0.8803
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.9008
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): 216 Pa (1.62 mm Hg)
Log Koa (Koawin est ): 4.944
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.39E-008
Octanol/air (Koa) model: 2.16E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 5.02E-007
Mackay model : 1.11E-006
Octanol/air (Koa) model: 1.73E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 12.2953 E-12 cm3/molecule-sec
Half-Life = 0.870 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 10.439 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Reaction With Nitrate Radicals May Be Important!
Fraction sorbed to airborne particulates (phi):
8.06E-007 (Junge-Pankow, Mackay avg)
1.73E-006 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 19.41 L/kg (MCI method)
Log Koc: 1.288 (MCI method)
Koc : 24.26 L/kg (Kow method)
Log Koc: 1.385 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Total Kb for pH > 8 at 25 deg C : 1.080E-001 L/mol-sec
Kb Half-Life at pH 8: 74.282 days
Kb Half-Life at pH 7: 2.034 years
(Total Kb applies only to esters, carbmates, alkyl halides)
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) = -1.8109 days (HL = 0.01546 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.093 (BCF = 1.239)
Log BAF Arnot-Gobas method (upper trophic) = 0.093 (BAF = 1.239)
log Kow used: 0.95 (estimated)
Volatilization from Water:
Henry LC: 7.73E-007 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 878.6 hours (36.61 days)
Half-Life from Model Lake : 9682 hours (403.4 days)
Removal In Wastewater Treatment:
Total removal: 1.93 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.79 percent
Total to Air: 0.04 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 1.79 20.9 1000
Water 34.8 360 1000
Soil 63.3 720 1000
Sediment 0.0921 3.24e+003 0
Persistence Time: 416 hr