This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
also you can go back to the Datasheet
CAS Num: 000624-89-5
SMILES : S(CC)C
CHEM : Ethane, (methylthio)-
MOL FOR: C3 H8 S1
MOL WT : 76.16
------------------------------ 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) = 1.41
Log Kow (Exper. database match) = 1.54
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 68.17 (Adapted Stein & Brown method)
Melting Pt (deg C): -94.52 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 150 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 2.01E+004 (Mean VP of Antoine & Grain methods)
MP (exp database): -105.9 deg C
BP (exp database): 66.7 deg C
VP (exp database): 1.60E+02 mm Hg (2.13E+004 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 6429
log Kow used: 1.54 (expkow database)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 7113.9 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.04E-003 atm-m3/mole (1.06E+002 Pa-m3/mole)
Group Method: 1.99E-003 atm-m3/mole (2.01E+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: 2.338E-003 atm-m3/mole (2.369E+002 Pa-m3/mole)
VP: 150 mm Hg (source: MPBPVP)
WS: 6.43E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 1.54 (exp database)
Log Kaw used: -1.371 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 2.911
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7113
Biowin2 (Non-Linear Model) : 0.8729
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.0309 (weeks )
Biowin4 (Primary Survey Model) : 3.7379 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5358
Biowin6 (MITI Non-Linear Model): 0.6890
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.7029
Ready Biodegradability Prediction: YES
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 0.4288
BioHC Half-Life (days) : 2.6841
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 2.13E+004 Pa (160 mm Hg)
Log Koa (Koawin est ): 2.911
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 1.41E-010
Octanol/air (Koa) model: 2E-010
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 5.08E-009
Mackay model : 1.13E-008
Octanol/air (Koa) model: 1.6E-008
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 10.2133 E-12 cm3/molecule-sec
Half-Life = 1.047 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 12.567 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Reaction With Nitrate Radicals May Be Important!
Fraction sorbed to airborne particulates (phi):
8.16E-009 (Junge-Pankow, Mackay avg)
1.6E-008 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 39.6 L/kg (MCI method)
Log Koc: 1.598 (MCI method)
Koc : 21.69 L/kg (Kow method)
Log Koc: 1.336 (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 = 0.683 (BCF = 4.82 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.7447 days (HL = 0.18 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.604 (BCF = 4.017)
Log BAF Arnot-Gobas method (upper trophic) = 0.604 (BAF = 4.017)
log Kow used: 1.54 (expkow database)
Volatilization from Water:
Henry LC: 0.00199 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 1.147 hours
Half-Life from Model Lake : 85.69 hours (3.57 days)
Removal In Wastewater Treatment:
Total removal: 45.43 percent
Total biodegradation: 0.06 percent
Total sludge adsorption: 1.20 percent
Total to Air: 44.18 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 17.3 30.2 1000
Water 49.8 360 1000
Soil 32.8 720 1000
Sediment 0.173 3.24e+003 0
Persistence Time: 134 hr