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CAS Number:

SMILES : CC(C)(CC(=O))S

CHEM : 3-methyl-3-sulfanylbutanal

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) = 1.14

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

Boiling Pt (deg C): 164.64 (Adapted Stein & Brown method)

Melting Pt (deg C): -31.85 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 2.02 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 269 (Mean VP of Antoine & Grain methods)

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

Water Solubility at 25 deg C (mg/L): 1.083e+004

log Kow used: 1.14 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 19231 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Aldehydes (Mono)

Thiols and Mercaptans

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method : 5.63E-006 atm-m3/mole (5.71E-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: 2.901E-005 atm-m3/mole (2.939E+000 Pa-m3/mole)

VP: 2.02 mm Hg (source: MPBPVP)

WS: 1.08E+004 mg/L (source: WSKOWWIN)

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

Log Kow used: 1.14 (KowWin est)

Log Kaw used: -3.638 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 4.778

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.7920

Biowin2 (Non-Linear Model) : 0.9989

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 2.7482 (weeks-months)

Biowin4 (Primary Survey Model) : 3.7204 (days-weeks )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.8898

Biowin6 (MITI Non-Linear Model): 0.9385

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.4913

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): 244 Pa (1.83 mm Hg)

Log Koa (Koawin est ): 4.778

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

Mackay model : 1.23E-008

Octanol/air (Koa) model: 1.47E-008

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 4.44E-007

Mackay model : 9.84E-007

Octanol/air (Koa) model: 1.18E-006

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 54.4561 E-12 cm3/molecule-sec

Half-Life = 0.196 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 2.357 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Fraction sorbed to airborne particulates (phi):

7.14E-007 (Junge-Pankow, Mackay avg)

1.18E-006 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 3.896 L/kg (MCI method)

Log Koc: 0.591 (MCI method)

Koc : 21.2 L/kg (Kow method)

Log Koc: 1.326 (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 = 0.419 (BCF = 2.625 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -1.0273 days (HL = 0.0939 days)

Log BCF Arnot-Gobas method (upper trophic) = 0.307 (BCF = 2.026)

Log BAF Arnot-Gobas method (upper trophic) = 0.307 (BAF = 2.026)

log Kow used: 1.14 (estimated)

Volatilization from Water:

Henry LC: 5.63E-006 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 114.2 hours (4.757 days)

Half-Life from Model Lake : 1337 hours (55.69 days)

Removal In Wastewater Treatment:

Total removal: 2.21 percent

Total biodegradation: 0.09 percent

Total sludge adsorption: 1.80 percent

Total to Air: 0.32 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 0.451 4.71 1000

Water 49.9 900 1000

Soil 49.5 1.8e+003 1000

Sediment 0.105 8.1e+003 0

Persistence Time: 561 hr

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