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CAS Num: 042474-44-2
SMILES : S(SCSC)C
CHEM : DISULFIDE, METHYL (METHYLTHIO)METHYL
MOL FOR: C3 H8 S3
MOL WT : 140.28
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Water Solubility (mg/L): ------
Vapor Pressure (mm Hg) : ------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.67 estimate) = 1.96
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 197.75 (Adapted Stein & Brown method)
Melting Pt (deg C): -22.29 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.404 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 53.8 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 1770
log Kow used: 1.96 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 986.78 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Neutral Organics
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 1.29E-005 atm-m3/mole (1.31E+000 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: 4.213E-005 atm-m3/mole (4.269E+000 Pa-m3/mole)
VP: 0.404 mm Hg (source: MPBPVP)
WS: 1.77E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 1.96 (KowWin est)
Log Kaw used: -3.278 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 5.238
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6808
Biowin2 (Non-Linear Model) : 0.7343
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8892 (weeks )
Biowin4 (Primary Survey Model) : 3.6454 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3451
Biowin6 (MITI Non-Linear Model): 0.2581
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.7029
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 0.5616
BioHC Half-Life (days) : 3.6442
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 49.2 Pa (0.369 mm Hg)
Log Koa (Koawin est ): 5.238
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 6.1E-008
Octanol/air (Koa) model: 4.25E-008
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 2.2E-006
Mackay model : 4.88E-006
Octanol/air (Koa) model: 3.4E-006
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 285.6461 E-12 cm3/molecule-sec
Half-Life = 0.037 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 26.960 Min
Ozone Reaction:
No Ozone Reaction Estimation
Reaction With Nitrate Radicals May Be Important!
Fraction sorbed to airborne particulates (phi):
3.54E-006 (Junge-Pankow, Mackay avg)
3.4E-006 (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 : 50.2 L/kg (Kow method)
Log Koc: 1.701 (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 = -0.380 (BCF = 0.4166 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.7800 days (HL = 0.1659 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.928 (BCF = 8.464)
Log BAF Arnot-Gobas method (upper trophic) = 0.928 (BAF = 8.464)
log Kow used: 1.96 (estimated)
Volatilization from Water:
Henry LC: 1.29E-005 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 54.96 hours (2.29 days)
Half-Life from Model Lake : 698.9 hours (29.12 days)
Removal In Wastewater Treatment:
Total removal: 2.91 percent
Total biodegradation: 0.09 percent
Total sludge adsorption: 2.10 percent
Total to Air: 0.71 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 0.106 0.899 1000
Water 27.1 360 1000
Soil 72.6 720 1000
Sediment 0.19 3.24e+003 0
Persistence Time: 431 hr