CAS Number: 2554-06-5
SMILES : C=C[Si]1(O[Si](O[Si](O[Si](O1)(C=C)C)(C=C)C)(C=C)C)C
CHEM   : Cyclotetrasiloxane, 2,4,6,8-tetraethenyl-2,4,6,8-tetramethyl-
MOL FOR: C12 H24 O4 Si4 
MOL WT : 344.66
------------------------------ EPI SUMMARY (v4.11) --------------------------
 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 v1.68 estimate) =  8.21
 
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
    Boiling Pt (deg C):  233.45  (Adapted Stein & Brown method)
    Melting Pt (deg C):  42.41  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.107  (Mean VP of Antoine & Grain methods)
    VP (Pa, 25 deg C) :  14.2  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -43.5 deg C
    BP  (exp database):  224 deg C
 
 Water Solubility Estimate from Log Kow (WSKOW v1.42):
    Water Solubility at 25 deg C (mg/L):  0.001777
       log Kow used: 8.21 (estimated)
       no-melting pt equation used
 
 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.0016316 mg/L
 
 ECOSAR Class Program (ECOSAR v1.11):
    Class(es) found:
       Neutral Organics
 
 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   8.92E-002  atm-m3/mole  (9.04E+003 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:  2.731E+001 atm-m3/mole  (2.767E+006 Pa-m3/mole)
      VP:   0.107 mm Hg (source: MPBPVP)
      WS:   0.00178 mg/L (source: WSKOWWIN)
 
 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  8.21  (KowWin est)
  Log Kaw used:  0.562  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  7.648
      Log Koa (experimental database):  None
 
 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.5835
   Biowin2 (Non-Linear Model)     :   0.1318
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.4375  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3505  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :  -0.2373
   Biowin6 (MITI Non-Linear Model):   0.0009
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.3645
 Ready Biodegradability Prediction:   NO
 
Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!
 
 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  13.3 Pa (0.0998 mm Hg)
  Log Koa (Koawin est  ): 7.648
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.25E-007 
       Octanol/air (Koa) model:  1.09E-005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  8.14E-006 
       Mackay model           :  1.8E-005 
       Octanol/air (Koa) model:  0.000872 
 
 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 105.7984 E-12 cm3/molecule-sec
      Half-Life =     0.101 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.213 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     0.700000 E-17 cm3/molecule-sec
      Half-Life =     1.637 Days (at 7E11 mol/cm3)
      Half-Life =     39.291 Hrs
   Fraction sorbed to airborne particulates (phi):
      1.31E-005 (Junge-Pankow, Mackay avg)
      0.000872 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation
 
 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  2.131E+005  L/kg (MCI method)
      Log Koc:  5.329       (MCI method)
      Koc    :  1.334E+007  L/kg (Kow method)
      Log Koc:  7.125       (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 v3.01):
   Log BCF from regression-based method = 3.533 (BCF = 3409 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = 2.2680 days (HL = 185.4 days)
   Log BCF Arnot-Gobas method (upper trophic) = 3.084 (BCF = 1212)
   Log BAF Arnot-Gobas method (upper trophic) = 6.494 (BAF = 3.122e+006)
       log Kow used: 8.21 (estimated)
 
 Volatilization from Water:
    Henry LC:  0.0892 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      1.907  hours
    Half-Life from Model Lake :      176.5  hours   (7.353 days)
 
 Removal In Wastewater Treatment:
    Total removal:              94.08  percent
    Total biodegradation:        0.77  percent
    Total sludge adsorption:    92.91  percent
    Total to Air:                0.40  percent
      (using 10000 hr Bio P,A,S)
 
 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.124           2.29         1000       
   Water     14              900          1000       
   Soil      66.9            1.8e+003     1000       
   Sediment  18.9            8.1e+003     0          
     Persistence Time: 1.09e+003 hr