cyclobarbital

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  2.30
    Log Kow (Exper. database match) =  1.77
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  563.32  (Adapted Stein & Brown method)
    Melting Pt (deg C):  242.18  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.94E-011  (Modified Grain method)
    MP  (exp database):  173 deg C
    Subcooled liquid VP: 6.61E-010 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  866.5
       log Kow used: 1.77 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  1600 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1097.8 mg/L
    Wat Sol (Exper. database match) =  1600.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Imides

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   5.13E-013  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  6.960E-015 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.77  (exp database)
  Log Kaw used:  -10.678  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.448
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.4511
   Biowin2 (Non-Linear Model)     :   0.1121
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.4649  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3534  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2118
   Biowin6 (MITI Non-Linear Model):   0.0778
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.1053
 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):  8.81E-008 Pa (6.61E-010 mm Hg)
  Log Koa (Koawin est  ): 12.448
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  34 
       Octanol/air (Koa) model:  0.689 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.999 
       Mackay model           :  1 
       Octanol/air (Koa) model:  0.982 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  97.8336 E-12 cm3/molecule-sec
      Half-Life =     0.109 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.312 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     7.393750 E-17 cm3/molecule-sec
      Half-Life =     0.155 Days (at 7E11 mol/cm3)
      Half-Life =      3.720 Hrs
   Fraction sorbed to airborne particulates (phi): 0.999 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  245.6
      Log Koc:  2.390 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.663 (BCF = 4.602)
       log Kow used: 1.77 (expkow database)

 Volatilization from Water:
    Henry LC:  5.13E-013 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.754E+009  hours   (7.31E+007 days)
    Half-Life from Model Lake : 1.914E+010  hours   (7.974E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               2.08  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.99  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.00174         1.54         1000       
   Water     27.6            900          1000       
   Soil      72.3            1.8e+003     1000       
   Sediment  0.0844          8.1e+003     0          
     Persistence Time: 1.29e+003 hr