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CAS Num: 003489-28-9
SMILES : SCCCCCCCCCS
CHEM : 1,9-Nonanedithiol
MOL FOR: C9 H20 S2
MOL WT : 192.38
------------------------------ 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) = 4.65
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 275.99 (Adapted Stein & Brown method)
Melting Pt (deg C): 19.22 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 0.00664 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 0.886 (Mean VP of Antoine & Grain methods)
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 5.124
log Kow used: 4.65 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 0.84299 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Thiols and Mercaptans
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 8.95E-004 atm-m3/mole (9.06E+001 Pa-m3/mole)
Group Method: 2.28E-004 atm-m3/mole (2.31E+001 Pa-m3/mole)
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 3.280E-004 atm-m3/mole (3.324E+001 Pa-m3/mole)
VP: 0.00664 mm Hg (source: MPBPVP)
WS: 5.12 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 4.65 (KowWin est)
Log Kaw used: -1.437 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 6.087
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.6560
Biowin2 (Non-Linear Model) : 0.5688
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.7740 (weeks )
Biowin4 (Primary Survey Model) : 3.5702 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5846
Biowin6 (MITI Non-Linear Model): 0.6979
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 1.0700
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): 0.923 Pa (0.00692 mm Hg)
Log Koa (Koawin est ): 6.087
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 3.25E-006
Octanol/air (Koa) model: 3E-007
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 0.000117
Mackay model : 0.00026
Octanol/air (Koa) model: 2.4E-005
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 92.8129 E-12 cm3/molecule-sec
Half-Life = 0.115 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 1.383 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
0.000189 (Junge-Pankow, Mackay avg)
2.4E-005 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 2644 L/kg (MCI method)
Log Koc: 3.422 (MCI method)
Koc : 1.085E+004 L/kg (Kow method)
Log Koc: 4.035 (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 = 1.360 (BCF = 22.9 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.3840 days (HL = 0.4131 days)
Log BCF Arnot-Gobas method (upper trophic) = 2.227 (BCF = 168.5)
Log BAF Arnot-Gobas method (upper trophic) = 2.227 (BAF = 168.6)
log Kow used: 4.65 (estimated)
Volatilization from Water:
Henry LC: 0.000228 atm-m3/mole (estimated by Group SAR Method)
Half-Life from Model River: 4.977 hours
Half-Life from Model Lake : 170.6 hours (7.108 days)
Removal In Wastewater Treatment:
Total removal: 65.56 percent
Total biodegradation: 0.55 percent
Total sludge adsorption: 61.65 percent
Total to Air: 3.36 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 0.389 2.76 1000
Water 18.9 360 1000
Soil 79.2 720 1000
Sediment 1.59 3.24e+003 0
Persistence Time: 429 hr