This page contains the EPI System Summary only.
For complete control of this information -
Download the free EPI SuiteTM v4.0 program : here
To Datasheet

CAS Num: 000765-70-8
SMILES : O=C(C(=O)CC1)C1C
CHEM   : 1,2-Cyclopentanedione, 3-methyl-
MOL FOR: C6 H8 O2 
MOL WT : 112.13
------------------------------ EPI SUMMARY (v4.00) --------------------------
 Physical Property Inputs:
    Water Solubility (mg/L):   ------
    Vapor Pressure (mm Hg) :   ------
    Henry LC (atm-m3/mole) :   ------
    Log Kow (octanol-water):   ------
    Boiling Point (deg C)  :   ------
    Melting Point (deg C)  :   ------

 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  -0.54

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
    Boiling Pt (deg C):  205.61  (Adapted Stein & Brown method)
    Melting Pt (deg C):  18.98  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.396  (Mean VP of Antoine & Grain methods)
    VP (Pa, 25 deg C) :  52.8  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  3.095e+005
       log Kow used: -0.54 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  16848 mg/L

 ECOSAR Class Program (ECOSAR v1.00):
    Class(es) found:
       Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   1.53E-007  atm-m3/mole  (1.55E-002 Pa-m3/mole)
   Group Method:   Incomplete
 For Henry LC Comparison Purposes:
   User-Entered Henry LC:  not entered
   Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
      HLC:  1.888E-007 atm-m3/mole  (1.913E-002 Pa-m3/mole)
      VP:   0.396 mm Hg (source: MPBPVP)
      WS:   3.1E+005 mg/L (source: WSKOWWIN)

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.54  (KowWin est)
  Log Kaw used:  -5.204  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  4.664
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6942
   Biowin2 (Non-Linear Model)     :   0.8048
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9514  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6860  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4309
   Biowin6 (MITI Non-Linear Model):   0.4138
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.5559
 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):  48.7 Pa (0.365 mm Hg)
  Log Koa (Koawin est  ): 4.664
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  6.16E-008 
       Octanol/air (Koa) model:  1.13E-008 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  2.23E-006 
       Mackay model           :  4.93E-006 
       Octanol/air (Koa) model:  9.06E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  11.3191 E-12 cm3/molecule-sec
      Half-Life =     0.945 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    11.339 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      3.58E-006 (Junge-Pankow, Mackay avg)
      9.06E-007 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  1  L/kg (MCI method)
      Log Koc:  0.000       (MCI method)
      Koc    :  1.472  L/kg (Kow method)
      Log Koc:  0.168       (Kow method)

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates (BCFBAF v3.00):
   Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -1.5404 days (HL = 0.02881 days)
   Log BCF Arnot-Gobas method (upper trophic) = -0.041 (BCF = 0.9095)
   Log BAF Arnot-Gobas method (upper trophic) = -0.041 (BAF = 0.9095)
       log Kow used: -0.54 (estimated)

 Volatilization from Water:
    Henry LC:  1.53E-007 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:       4053  hours   (168.9 days)
    Half-Life from Model Lake : 4.431E+004  hours   (1846 days)

 Removal In Wastewater Treatment:
    Total removal:               1.86  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  percent
    Total to Air:                0.01  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       1.49            22.7         1000       
   Water     42.9            360          1000       
   Soil      55.5            720          1000       
   Sediment  0.0804          3.24e+003    0          
     Persistence Time: 418 hr