CAS Number: 73-40-5
SMILES : N1C(N)=Nc2ncnc2C1(=O)
CHEM   : 6H-Purin-6-one, 2-amino-1,7-dihydro-
MOL FOR: C5 H5 N5 O1 
MOL WT : 151.13
------------------------------ EPI SUMMARY (v4.10) --------------------------
 Physical Property Inputs:
    Log Kow (octanol-water):   ------
    Boiling Point (deg C)  :   ------
    Melting Point (deg C)  :   ------
    Vapor Pressure (mm Hg) :   ------
    Water Solubility (mg/L):   ------
    Henry LC (atm-m3/mole) :   ------
 
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.68 estimate) =  -1.05
    Log Kow (Exper. database match) =  -0.91
       Exper. Ref:  HANSCH,C ET AL. (1995)
 
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP v1.43):
    Boiling Pt (deg C):  514.91  (Adapted Stein & Brown method)
    Melting Pt (deg C):  219.56  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.65E-012  (Modified Grain method)
    VP (Pa, 25 deg C) :  2.2E-010  (Modified Grain method)
    MP  (exp database):  360 dec deg C
    Subcooled liquid VP: 1.15E-008 mm Hg (25 deg C, Mod-Grain method)
                       : 1.53E-006 Pa (25 deg C, Mod-Grain method)
 
 Water Solubility Estimate from Log Kow (WSKOW v1.42):
    Water Solubility at 25 deg C (mg/L):  2.199e+004
       log Kow used: -0.91 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  2080 mg/L (37 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)
 
 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1e+006 mg/L
 
 ECOSAR Class Program (ECOSAR v1.00):
    Class(es) found:
       Imidazoles
       Amides 
 
 Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
   Bond Method :   2.62E-017  atm-m3/mole  (2.65E-012 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:  1.492E-017 atm-m3/mole  (1.512E-012 Pa-m3/mole)
      VP:   1.65E-012 mm Hg (source: MPBPVP)
      WS:   2.2E+004 mg/L (source: WSKOWWIN)
 
 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.91  (exp database)
  Log Kaw used:  -14.970  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  14.060
      Log Koa (experimental database):  None
 
 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8857
   Biowin2 (Non-Linear Model)     :   0.9722
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8110  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8351  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3974
   Biowin6 (MITI Non-Linear Model):   0.3034
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.1728
 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):  1.53E-006 Pa (1.15E-008 mm Hg)
  Log Koa (Koawin est  ): 14.060
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.96 
       Octanol/air (Koa) model:  28.2 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.986 
       Mackay model           :  0.994 
       Octanol/air (Koa) model:  1 
 
 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  62.5000 E-12 cm3/molecule-sec
      Half-Life =     0.171 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     2.054 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi):
      0.99 (Junge-Pankow, Mackay avg)
      1 (Koa method)
    Note: the sorbed fraction may be resistant to atmospheric oxidation
 
 Soil Adsorption Coefficient (KOCWIN v2.00):
      Koc    :  10  L/kg (MCI method)
      Log Koc:  1.000       (MCI method)
      Koc    :  3.526  L/kg (Kow method)
      Log Koc:  0.547       (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 v3.01):
   Log BCF from regression-based method = 0.500 (BCF = 3.162 L/kg wet-wt)
   Log Biotransformation Half-life (HL) = -1.8855 days (HL = 0.01302 days)
   Log BCF Arnot-Gobas method (upper trophic) = -0.047 (BCF = 0.8975)
   Log BAF Arnot-Gobas method (upper trophic) = -0.047 (BAF = 0.8975)
       log Kow used: -0.91 (expkow database)
 
 Volatilization from Water:
    Henry LC:  2.62E-017 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 2.747E+013  hours   (1.145E+012 days)
    Half-Life from Model Lake : 2.997E+014  hours   (1.249E+013 days)
 
 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)
 
 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       3.63e-006       4.11         1000       
   Water     30.6            360          1000       
   Soil      69.4            720          1000       
   Sediment  0.0688          3.24e+003    0          
     Persistence Time: 640 hr