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CAS Number: 42075-42-3
SMILES : CC(C)C(=O)SC
CHEM : S-methyl 2-methylpropanethioate
MOL FOR: C5 H10 O1 S1
MOL WT : 118.19
------------------------------ 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) = 1.13
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 147.52 (Adapted Stein & Brown method)
Melting Pt (deg C): -42.62 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 4.5 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 600 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1.099e+004
log Kow used: 1.13 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 26211 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Esters
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.10E-004 atm-m3/mole (1.11E+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: 6.368E-005 atm-m3/mole (6.452E+000 Pa-m3/mole)
VP: 4.5 mm Hg (source: MPBPVP)
WS: 1.1E+004 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 1.13 (KowWin est)
Log Kaw used: -2.347 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 3.477
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6913
Biowin2 (Non-Linear Model) : 0.7909
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9380 (weeks )
Biowin4 (Primary Survey Model) : 3.6772 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3111
Biowin6 (MITI Non-Linear Model): 0.2833
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4315
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): 549 Pa (4.12 mm Hg)
Log Koa (Koawin est ): 3.477
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 5.46E-009
Octanol/air (Koa) model: 7.36E-010
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.97E-007
Mackay model : 4.37E-007
Octanol/air (Koa) model: 5.89E-008
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 4.0734 E-12 cm3/molecule-sec
Half-Life = 2.626 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 31.510 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
3.17E-007 (Junge-Pankow, Mackay avg)
5.89E-008 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 4.5 L/kg (MCI method)
Log Koc: 0.653 (MCI method)
Koc : 20.93 L/kg (Kow method)
Log Koc: 1.321 (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 = 0.414 (BCF = 2.595 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.9481 days (HL = 0.1127 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.312 (BCF = 2.052)
Log BAF Arnot-Gobas method (upper trophic) = 0.312 (BAF = 2.052)
log Kow used: 1.13 (estimated)
Volatilization from Water:
Henry LC: 0.00011 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 6.896 hours
Half-Life from Model Lake : 166.4 hours (6.933 days)
Removal In Wastewater Treatment:
Total removal: 7.13 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 1.73 percent
Total to Air: 5.31 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 10.2 63 1000
Water 43.4 360 1000
Soil 46.3 720 1000
Sediment 0.0877 3.24e+003 0
Persistence Time: 259 hr