Methyl 2-methylbutyrate

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) =  1.77

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  111.74  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -68.43  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  22.5  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  3172
       log Kow used: 1.77 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  7255.6 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.10E-004  atm-m3/mole
   Group Method:   5.11E-004  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  1.084E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.77  (KowWin est)
  Log Kaw used:  -1.776  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.546
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8664
   Biowin2 (Non-Linear Model)     :   0.9957
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0827  (weeks       )
   Biowin4 (Primary Survey Model) :   3.9091  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7103
   Biowin6 (MITI Non-Linear Model):   0.8815
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6294
 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):  2.83E+003 Pa (21.2 mm Hg)
  Log Koa (Koawin est  ): 3.546
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.06E-009 
       Octanol/air (Koa) model:  8.63E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  3.83E-008 
       Mackay model           :  8.49E-008 
       Octanol/air (Koa) model:  6.9E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   2.4407 E-12 cm3/molecule-sec
      Half-Life =     4.382 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    52.588 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 6.16E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  19.59
      Log Koc:  1.292 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  1.538E-002  L/mol-sec
  Kb Half-Life at pH 8:       1.428  years  
  Kb Half-Life at pH 7:      14.279  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.665 (BCF = 4.625)
       log Kow used: 1.77 (estimated)

 Volatilization from Water:
    Henry LC:  0.000511 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River:      2.335  hours
    Half-Life from Model Lake :      115.8  hours   (4.827 days)

 Removal In Wastewater Treatment:
    Total removal:              20.09  percent
    Total biodegradation:        0.08  percent
    Total sludge adsorption:     1.69  percent
    Total to Air:               18.32  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       19.4            105          1000       
   Water     37.4            360          1000       
   Soil      43.1            720          1000       
   Sediment  0.106           3.24e+003    0          
     Persistence Time: 212 hr