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CAS Number: 2179-58-0
SMILES : S(SCC=C)C
CHEM : DISULFIDE, METHYL 2-PROPENYL
MOL FOR: C4 H8 S2
MOL WT : 120.23
------------------------------ 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) = 2.72
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
Boiling Pt (deg C): 157.20 (Adapted Stein & Brown method)
Melting Pt (deg C): -46.58 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 2.87 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 382 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 477.1
log Kow used: 2.72 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 319.37 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.59E-003 atm-m3/mole (1.61E+002 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: 9.516E-004 atm-m3/mole (9.642E+001 Pa-m3/mole)
VP: 2.87 mm Hg (source: MPBPVP)
WS: 477 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.72 (KowWin est)
Log Kaw used: -1.187 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 3.907
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6903
Biowin2 (Non-Linear Model) : 0.7861
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.9335 (weeks )
Biowin4 (Primary Survey Model) : 3.6743 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.4229
Biowin6 (MITI Non-Linear Model): 0.3987
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.5619
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 0.5722
BioHC Half-Life (days) : 3.7339
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 348 Pa (2.61 mm Hg)
Log Koa (Koawin est ): 3.907
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 8.62E-009
Octanol/air (Koa) model: 1.98E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 3.11E-007
Mackay model : 6.9E-007
Octanol/air (Koa) model: 1.59E-007
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 259.6460 E-12 cm3/molecule-sec
Half-Life = 0.041 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 29.660 Min
Ozone Reaction:
OVERALL Ozone Rate Constant = 1.200000 E-17 cm3/molecule-sec
Half-Life = 0.955 Days (at 7E11 mol/cm3)
Half-Life = 22.920 Hrs
Fraction sorbed to airborne particulates (phi):
5.01E-007 (Junge-Pankow, Mackay avg)
1.59E-007 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 131.5 L/kg (MCI method)
Log Koc: 2.119 (MCI method)
Koc : 229.2 L/kg (Kow method)
Log Koc: 2.360 (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 = 0.121 (BCF = 1.32 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.4438 days (HL = 0.3599 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.601 (BCF = 39.93)
Log BAF Arnot-Gobas method (upper trophic) = 1.601 (BAF = 39.93)
log Kow used: 2.72 (estimated)
Volatilization from Water:
Henry LC: 0.00159 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1.523 hours
Half-Life from Model Lake : 108.6 hours (4.523 days)
Removal In Wastewater Treatment:
Total removal: 41.23 percent
Total biodegradation: 0.08 percent
Total sludge adsorption: 2.88 percent
Total to Air: 38.28 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 0.512 0.948 1000
Water 36.7 360 1000
Soil 62.5 720 1000
Sediment 0.258 3.24e+003 0
Persistence Time: 183 hr