3-Isobutyl-2,5-dimethylpyrazine

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) =  2.98

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  235.74  (Adapted Stein & Brown method)
    Melting Pt (deg C):  45.20  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.0361  (Modified Grain method)
    Subcooled liquid VP: 0.0551 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):  185.9
       log Kow used: 2.98 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1213.2 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   9.18E-006  atm-m3/mole
   Group Method:   6.58E-008  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  4.197E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.98  (KowWin est)
  Log Kaw used:  -3.426  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.406
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8334
   Biowin2 (Non-Linear Model)     :   0.9174
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.6116  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.4052  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2091
   Biowin6 (MITI Non-Linear Model):   0.1588
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.4497
 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):  7.35 Pa (0.0551 mm Hg)
  Log Koa (Koawin est  ): 6.406
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  4.08E-007 
       Octanol/air (Koa) model:  6.25E-007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.47E-005 
       Mackay model           :  3.27E-005 
       Octanol/air (Koa) model:  5E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   5.9706 E-12 cm3/molecule-sec
      Half-Life =     1.791 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    21.497 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.37E-005 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  428.5
      Log Koc:  2.632 

 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 = 1.596 (BCF = 39.45)
       log Kow used: 2.98 (estimated)

 Volatilization from Water:
    Henry LC:  9.18E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      83.05  hours   (3.46 days)
    Half-Life from Model Lake :       1013  hours   (42.23 days)

 Removal In Wastewater Treatment:
    Total removal:               6.00  percent
    Total biodegradation:        0.12  percent
    Total sludge adsorption:     5.39  percent
    Total to Air:                0.49  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       1.31            43           1000       
   Water     19.1            900          1000       
   Soil      79.2            1.8e+003     1000       
   Sediment  0.416           8.1e+003     0          
     Persistence Time: 1.01e+003 hr