Methyl 2,3-dimethylbutanoate

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) =  2.19

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  121.04  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -67.58  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  14.9  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  1236
       log Kow used: 2.19 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  3957.4 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   5.45E-004  atm-m3/mole
   Group Method:   8.68E-004  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  2.065E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.19  (KowWin est)
  Log Kaw used:  -1.652  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.842
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8597
   Biowin2 (Non-Linear Model)     :   0.9947
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0517  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8889  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5689
   Biowin6 (MITI Non-Linear Model):   0.7487
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3579
 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):  1.85E+003 Pa (13.9 mm Hg)
  Log Koa (Koawin est  ): 3.842
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.62E-009 
       Octanol/air (Koa) model:  1.71E-009 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  5.85E-008 
       Mackay model           :  1.29E-007 
       Octanol/air (Koa) model:  1.36E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   3.8454 E-12 cm3/molecule-sec
      Half-Life =     2.782 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    33.378 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 9.4E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  30.91
      Log Koc:  1.490 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  3.440E-005  L/mol-sec
  Kb Half-Life at pH 8:     638.399  years  
  Kb Half-Life at pH 7:    6383.988  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.987 (BCF = 9.698)
       log Kow used: 2.19 (estimated)

 Volatilization from Water:
    Henry LC:  0.000868 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River:      1.934  hours
    Half-Life from Model Lake :      116.8  hours   (4.865 days)

 Removal In Wastewater Treatment:
    Total removal:              28.52  percent
    Total biodegradation:        0.08  percent
    Total sludge adsorption:     1.89  percent
    Total to Air:               26.55  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       15.6            66.8         1000       
   Water     33.5            360          1000       
   Soil      50.7            720          1000       
   Sediment  0.148           3.24e+003    0          
     Persistence Time: 215 hr