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CAS Number: 74758-93-3

SMILES : CCCC(=O)OCSC

CHEM : methylsulfanylmethyl butanoate

MOL FOR: C6 H12 O2 S1

MOL WT : 148.22

------------------------------ 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) = 1.44

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

Boiling Pt (deg C): 188.10 (Adapted Stein & Brown method)

Melting Pt (deg C): -21.44 (Mean or Weighted MP)

VP(mm Hg,25 deg C): 0.65 (Mean VP of Antoine & Grain methods)

VP (Pa, 25 deg C) : 86.7 (Mean VP of Antoine & Grain methods)

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

Water Solubility at 25 deg C (mg/L): 4534

log Kow used: 1.44 (estimated)

no-melting pt equation used

Water Sol Estimate from Fragments:

Wat Sol (v1.01 est) = 4395.6 mg/L

ECOSAR Class Program (ECOSAR v1.00):

Class(es) found:

Esters

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

Bond Method : 3.30E-006 atm-m3/mole (3.34E-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: 2.796E-005 atm-m3/mole (2.833E+000 Pa-m3/mole)

VP: 0.65 mm Hg (source: MPBPVP)

WS: 4.53E+003 mg/L (source: WSKOWWIN)

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

Log Kow used: 1.44 (KowWin est)

Log Kaw used: -3.870 (HenryWin est)

Log Koa (KOAWIN v1.10 estimate): 5.310

Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10):

Biowin1 (Linear Model) : 0.8512

Biowin2 (Non-Linear Model) : 0.9932

Expert Survey Biodegradation Results:

Biowin3 (Ultimate Survey Model): 3.0118 (weeks )

Biowin4 (Primary Survey Model) : 3.8628 (days )

MITI Biodegradation Probability:

Biowin5 (MITI Linear Model) : 0.7640

Biowin6 (MITI Non-Linear Model): 0.8829

Anaerobic Biodegradation Probability:

Biowin7 (Anaerobic Linear Model): 0.9268

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): 78.9 Pa (0.592 mm Hg)

Log Koa (Koawin est ): 5.310

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

Mackay model : 3.8E-008

Octanol/air (Koa) model: 5.01E-008

Fraction sorbed to airborne particulates (phi):

Junge-Pankow model : 1.37E-006

Mackay model : 3.04E-006

Octanol/air (Koa) model: 4.01E-006

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

Hydroxyl Radicals Reaction:

OVERALL OH Rate Constant = 16.0894 E-12 cm3/molecule-sec

Half-Life = 0.665 Days (12-hr day; 1.5E6 OH/cm3)

Half-Life = 7.977 Hrs

Ozone Reaction:

No Ozone Reaction Estimation

Reaction With Nitrate Radicals May Be Important!

Fraction sorbed to airborne particulates (phi):

2.21E-006 (Junge-Pankow, Mackay avg)

4.01E-006 (Koa method)

Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00):

Koc : 35.37 L/kg (MCI method)

Log Koc: 1.549 (MCI method)

Koc : 45.29 L/kg (Kow method)

Log Koc: 1.656 (Kow method)

Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:

Total Kb for pH > 8 at 25 deg C : 1.491E+000 L/mol-sec

Kb Half-Life at pH 8: 5.381 days

Kb Half-Life at pH 7: 53.812 days

(Total Kb applies only to esters, carbmates, alkyl halides)

Bioaccumulation Estimates (BCFBAF v3.00):

Log BCF from regression-based method = 0.618 (BCF = 4.153 L/kg wet-wt)

Log Biotransformation Half-life (HL) = -1.6718 days (HL = 0.02129 days)

Log BCF Arnot-Gobas method (upper trophic) = 0.318 (BCF = 2.077)

Log BAF Arnot-Gobas method (upper trophic) = 0.318 (BAF = 2.077)

log Kow used: 1.44 (estimated)

Volatilization from Water:

Henry LC: 3.3E-006 atm-m3/mole (estimated by Bond SAR Method)

Half-Life from Model River: 217.2 hours (9.052 days)

Half-Life from Model Lake : 2472 hours (103 days)

Removal In Wastewater Treatment:

Total removal: 2.14 percent

Total biodegradation: 0.09 percent

Total sludge adsorption: 1.86 percent

Total to Air: 0.19 percent

(using 10000 hr Bio P,A,S)

Level III Fugacity Model:

Mass Amount Half-Life Emissions

(percent) (hr) (kg/hr)

Air 1.55 16 1000

Water 32.3 360 1000

Soil 66 720 1000

Sediment 0.107 3.24e+003 0

Persistence Time: 415 hr

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