Butylparaben

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  3.47
    Log Kow (Exper. database match) =  3.57
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  300.26  (Adapted Stein & Brown method)
    Melting Pt (deg C):  81.45  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.000251  (Modified Grain method)
    MP  (exp database):  68.5 deg C
    Subcooled liquid VP: 0.000645 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):  159
       log Kow used: 3.57 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  207 mg/L (20 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  132.87 mg/L
    Wat Sol (Exper. database match) =  207.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.45E-009  atm-m3/mole
   Group Method:   6.00E-009  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  4.034E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.57  (exp database)
  Log Kaw used:  -6.462  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  10.032
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.0535
   Biowin2 (Non-Linear Model)     :   0.9992
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.2649  (days-weeks  )
   Biowin4 (Primary Survey Model) :   4.1052  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7238
   Biowin6 (MITI Non-Linear Model):   0.8377
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3876
 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):  0.086 Pa (0.000645 mm Hg)
  Log Koa (Koawin est  ): 10.032
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.49E-005 
       Octanol/air (Koa) model:  0.00264 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.00126 
       Mackay model           :  0.00278 
       Octanol/air (Koa) model:  0.175 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  15.4808 E-12 cm3/molecule-sec
      Half-Life =     0.691 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     8.291 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.00202 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  787.8
      Log Koc:  2.896 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  5.102E-003  L/mol-sec
  Kb Half-Life at pH 8:       4.305  years  
  Kb Half-Life at pH 7:      43.052  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 2.049 (BCF = 111.9)
       log Kow used: 3.57 (expkow database)

 Volatilization from Water:
    Henry LC:  6E-009 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River:  1.36E+005  hours   (5666 days)
    Half-Life from Model Lake : 1.484E+006  hours   (6.182E+004 days)

 Removal In Wastewater Treatment:
    Total removal:              14.72  percent
    Total biodegradation:        0.20  percent
    Total sludge adsorption:    14.53  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       0.161           16.6         1000       
   Water     18.8            208          1000       
   Soil      80.3            416          1000       
   Sediment  0.649           1.87e+003    0          
     Persistence Time: 446 hr