4-Methyl-2-pentyne

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) =  2.50

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  74.57  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -47.40  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  120  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  276.3
       log Kow used: 2.50 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1275.3 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   1.90E-002  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.695E-002 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.50  (KowWin est)
  Log Kaw used:  -0.110  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  2.610
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7084
   Biowin2 (Non-Linear Model)     :   0.8632
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0176  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7292  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4183
   Biowin6 (MITI Non-Linear Model):   0.5281
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.4315
 Ready Biodegradability Prediction:   NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   0.4901
     BioHC Half-Life (days)     :   3.0910

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  1.55E+004 Pa (116 mm Hg)
  Log Koa (Koawin est  ): 2.610
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.94E-010 
       Octanol/air (Koa) model:  1E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  7.01E-009 
       Mackay model           :  1.55E-008 
       Octanol/air (Koa) model:  8E-009 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  29.4106 E-12 cm3/molecule-sec
      Half-Life =     0.364 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     4.364 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     0.003000 E-17 cm3/molecule-sec
      Half-Life =   382.000 Days (at 7E11 mol/cm3)
   Fraction sorbed to airborne particulates (phi): 1.13E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  124.9
      Log Koc:  2.096 

 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 = 1.224 (BCF = 16.76)
       log Kow used: 2.50 (estimated)

 Volatilization from Water:
    Henry LC:  0.019 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:     0.9528  hours   (57.17 min)
    Half-Life from Model Lake :      86.39  hours   (3.6 days)

 Removal In Wastewater Treatment:
    Total removal:              88.17  percent
    Total biodegradation:        0.03  percent
    Total sludge adsorption:     1.23  percent
    Total to Air:               86.91  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       10.4            8.72         1000       
   Water     72              360          1000       
   Soil      17              720          1000       
   Sediment  0.502           3.24e+003    0          
     Persistence Time: 86.1 hr