This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
To Datasheet

CAS Num: 001191-62-4
SMILES : SCCCCCCCCS
CHEM   : 
MOL FOR: C8 H18 S2 
MOL WT : 178.35
------------------------------ 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) =  4.16

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
    Boiling Pt (deg C):  259.44  (Adapted Stein & Brown method)
    Melting Pt (deg C):  8.75  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.00975  (Mean VP of Antoine & Grain methods)
    VP (Pa, 25 deg C) :  1.3  (Mean VP of Antoine & Grain methods)
    BP  (exp database):  269-270 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  15.79
       log Kow used: 4.16 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  2.6913 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 :   6.74E-004  atm-m3/mole  (6.83E+001 Pa-m3/mole)
   Group Method:   1.62E-004  atm-m3/mole  (1.64E+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:  1.449E-004 atm-m3/mole  (1.468E+001 Pa-m3/mole)
      VP:   0.00975 mm Hg (source: MPBPVP)
      WS:   15.8 mg/L (source: WSKOWWIN)

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  4.16  (KowWin est)
  Log Kaw used:  -1.560  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  5.720
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6626
   Biowin2 (Non-Linear Model)     :   0.6168
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8050  (weeks       )
   Biowin4 (Primary Survey Model) :   3.5904  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5769
   Biowin6 (MITI Non-Linear Model):   0.6927
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  1.0440
 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):  1.33 Pa (0.00996 mm Hg)
  Log Koa (Koawin est  ): 5.720
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.26E-006 
       Octanol/air (Koa) model:  1.29E-007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  8.16E-005 
       Mackay model           :  0.000181 
       Octanol/air (Koa) model:  1.03E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  91.3999 E-12 cm3/molecule-sec
      Half-Life =     0.117 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.404 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      0.000131 (Junge-Pankow, Mackay avg)
      1.03E-005 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  1451  L/kg (MCI method)
      Log Koc:  3.162       (MCI method)
      Koc    :  4074  L/kg (Kow method)
      Log Koc:  3.610       (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 = 1.036 (BCF = 10.86 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -0.5231 days (HL = 0.2998 days)
   Log BCF Arnot-Gobas method (upper trophic) = 2.071 (BCF = 117.8)
   Log BAF Arnot-Gobas method (upper trophic) = 2.071 (BAF = 117.8)
       log Kow used: 4.16 (estimated)

 Volatilization from Water:
    Henry LC:  0.000162 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River:      6.189  hours
    Half-Life from Model Lake :      179.5  hours   (7.479 days)

 Removal In Wastewater Treatment:
    Total removal:              41.44  percent
    Total biodegradation:        0.36  percent
    Total sludge adsorption:    36.52  percent
    Total to Air:                4.56  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.386           2.81         1000       
   Water     20              360          1000       
   Soil      78.7            720          1000       
   Sediment  0.979           3.24e+003    0          
     Persistence Time: 428 hr