Methylparaben

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) =  2.00
    Log Kow (Exper. database match) =  1.96
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  252.18  (Adapted Stein & Brown method)
    Melting Pt (deg C):  51.47  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.000855  (Modified Grain method)
    MP  (exp database):  131 deg C
    BP  (exp database):  275 dec deg C
    Subcooled liquid VP: 0.00986 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):  5981
       log Kow used: 1.96 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  2500 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  4250.6 mg/L
    Wat Sol (Exper. database match) =  2500.00
       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 :   3.61E-009  atm-m3/mole
   Group Method:   2.23E-009  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  2.862E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.96  (exp database)
  Log Kaw used:  -6.831  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  8.791
      Log Koa (experimental database):  8.570

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.9651
   Biowin2 (Non-Linear Model)     :   0.9971
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0595  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8969  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7007
   Biowin6 (MITI Non-Linear Model):   0.8275
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6274
 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):  1.31 Pa (0.00986 mm Hg)
  Log Koa (Exp database): 8.570
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.28E-006 
       Octanol/air (Koa) model:  9.12E-005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  8.24E-005 
       Mackay model           :  0.000183 
       Octanol/air (Koa) model:  0.00724 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  11.0649 E-12 cm3/molecule-sec
      Half-Life =     0.967 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    11.600 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.000132 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  125.6
      Log Koc:  2.099 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  6.365E-003  L/mol-sec
  Kb Half-Life at pH 8:       3.451  years  
  Kb Half-Life at pH 7:      34.506  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.809 (BCF = 6.445)
       log Kow used: 1.96 (expkow database)

 Volatilization from Water:
    Henry LC:  2.23E-009 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River: 3.239E+005  hours   (1.349E+004 days)
    Half-Life from Model Lake : 3.533E+006  hours   (1.472E+005 days)

 Removal In Wastewater Treatment:
    Total removal:               2.21  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.12  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       0.0422          23.2         1000       
   Water     23.4            360          1000       
   Soil      76.5            720          1000       
   Sediment  0.0792          3.24e+003    0          
     Persistence Time: 695 hr