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CAS Number: 20756-86-9
SMILES : CCCCCC(=O)SC
CHEM : S-methyl hexanethioate
MOL FOR: C7 H14 O1 S1
MOL WT : 146.25
------------------------------ 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) = 2.19
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 202.15 (Adapted Stein & Brown method)
Melting Pt (deg C): -7.90 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.324 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 43.2 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1066
log Kow used: 2.19 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 1631.9 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.94E-004 atm-m3/mole (1.96E+001 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: 5.849E-005 atm-m3/mole (5.926E+000 Pa-m3/mole)
VP: 0.324 mm Hg (source: MPBPVP)
WS: 1.07E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.19 (KowWin est)
Log Kaw used: -2.101 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 4.291
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7864
Biowin2 (Non-Linear Model) : 0.9413
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.1743 (weeks )
Biowin4 (Primary Survey Model) : 3.9058 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.4755
Biowin6 (MITI Non-Linear Model): 0.5151
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4632
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): 39.6 Pa (0.297 mm Hg)
Log Koa (Koawin est ): 4.291
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 7.58E-008
Octanol/air (Koa) model: 4.8E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.74E-006
Mackay model : 6.06E-006
Octanol/air (Koa) model: 3.84E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 9.6288 E-12 cm3/molecule-sec
Half-Life = 1.111 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 13.330 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
4.4E-006 (Junge-Pankow, Mackay avg)
3.84E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 17.41 L/kg (MCI method)
Log Koc: 1.241 (MCI method)
Koc : 80.76 L/kg (Kow method)
Log Koc: 1.907 (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 = 1.111 (BCF = 12.9 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.6186 days (HL = 0.2407 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.144 (BCF = 13.93)
Log BAF Arnot-Gobas method (upper trophic) = 1.144 (BAF = 13.93)
log Kow used: 2.19 (estimated)
Volatilization from Water:
Henry LC: 0.000194 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 4.884 hours
Half-Life from Model Lake : 154.7 hours (6.445 days)
Removal In Wastewater Treatment:
Total removal: 10.84 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 2.21 percent
Total to Air: 8.54 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 6.66 26.7 1000
Water 38.7 360 1000
Soil 54.6 720 1000
Sediment 0.099 3.24e+003 0
Persistence Time: 247 hr