7,8-Dihydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one

Predicted data is generated using the ACD/Labs’ ACD/PhysChem Suite, for more information see their website.

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™, for more information see their website.

                    
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  2.07

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  464.36  (Adapted Stein & Brown method)
    Melting Pt (deg C):  195.95  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.01E-010  (Modified Grain method)
    Subcooled liquid VP: 6.35E-009 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):  1188
       log Kow used: 2.07 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  412.01 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Phenols
       Vinyl/Allyl Ketones
       Vinyl/Allyl Ethers

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.07E-020  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  3.023E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.07  (KowWin est)
  Log Kaw used:  -17.779  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  19.849
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.1051
   Biowin2 (Non-Linear Model)     :   0.9757
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.6905  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.6318  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4693
   Biowin6 (MITI Non-Linear Model):   0.2880
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.2183
 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):  8.47E-007 Pa (6.35E-009 mm Hg)
  Log Koa (Koawin est  ): 19.849
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.54 
       Octanol/air (Koa) model:  1.73E+007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.992 
       Mackay model           :  0.996 
       Octanol/air (Koa) model:  1 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 230.8350 E-12 cm3/molecule-sec
      Half-Life =     0.046 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     0.556 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =    10.500000 E-17 cm3/molecule-sec
      Half-Life =     0.109 Days (at 7E11 mol/cm3)
      Half-Life =      2.619 Hrs
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.994 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  6669
      Log Koc:  3.824 

 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 = 0.052 (BCF = 1.127)
       log Kow used: 2.07 (estimated)

 Volatilization from Water:
    Henry LC:  4.07E-020 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 2.365E+016  hours   (9.853E+014 days)
    Half-Life from Model Lake :  2.58E+017  hours   (1.075E+016 days)

 Removal In Wastewater Treatment:
    Total removal:               2.31  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.22  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       6.96e-011       0.781        1000       
   Water     21.8            900          1000       
   Soil      78.1            1.8e+003     1000       
   Sediment  0.0916          8.1e+003     0          
     Persistence Time: 1.46e+003 hr