ChemSpider 2D Image | 4,5-Dihydroxyphthalic acid | C8H6O6

4,5-Dihydroxyphthalic acid

  • Molecular FormulaC8H6O6
  • Average mass198.130 Da
  • Monoisotopic mass198.016434 Da
  • ChemSpider ID41620

More details:

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

1,2-Benzenedicarboxylic acid, 4,5-dihydroxy- [ACD/Index Name]
4,5-Dihydroxyphthalic acid [ACD/IUPAC Name]
4,5-Dihydroxyphthalsäure [German] [ACD/IUPAC Name]
63958-66-7 [RN]
Acide 4,5-dihydroxyphtalique [French] [ACD/IUPAC Name]
4,5-Dhpa
4,5-dihydroxybenzene-1,2-dicarboxylic acid
MFCD18976691

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

C03233 [DBID]
CHEBI:17199 [DBID]

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.8±0.1 g/cm3
Boiling Point: 535.8±50.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.5 mmHg at 25°C
Enthalpy of Vaporization: 85.5±3.0 kJ/mol
Flash Point: 291.9±26.6 °C
Index of Refraction: 1.718
Molar Refractivity: 43.9±0.3 cm3
#H bond acceptors: 6
#H bond donors: 4
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 0.67
ACD/LogD (pH 5.5): -1.90
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): -3.23
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 115 Å2
Polarizability: 17.4±0.5 10-24cm3
Surface Tension: 111.1±3.0 dyne/cm
Molar Volume: 111.4±3.0 cm3

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™ 

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  0.11

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  421.04  (Adapted Stein & Brown method)
    Melting Pt (deg C):  175.71  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  3.04E-009  (Modified Grain method)
    Subcooled liquid VP: 1.11E-007 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):  1.369e+005
       log Kow used: 0.11 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  5.9086e+005 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Phenols-acid

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.36E-020  atm-m3/mole
   Group Method:   5.87E-021  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  5.789E-015 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.11  (KowWin est)
  Log Kaw used:  -18.016  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  18.126
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.2386
   Biowin2 (Non-Linear Model)     :   0.9989
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0498  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6568  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   1.0215
   Biowin6 (MITI Non-Linear Model):   0.9485
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  1.3378
 Ready Biodegradability Prediction:   YES

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  1.48E-005 Pa (1.11E-007 mm Hg)
  Log Koa (Koawin est  ): 18.126
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.203 
       Octanol/air (Koa) model:  3.28E+005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.88 
       Mackay model           :  0.942 
       Octanol/air (Koa) model:  1 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   3.6376 E-12 cm3/molecule-sec
      Half-Life =     2.940 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    35.285 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.911 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  195.6
      Log Koc:  2.291 

 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 = 0.500 (BCF = 3.162)
       log Kow used: 0.11 (estimated)

 Volatilization from Water:
    Henry LC:  5.87E-021 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River: 1.404E+017  hours   (5.85E+015 days)
    Half-Life from Model Lake : 1.532E+018  hours   (6.382E+016 days)

 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  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       1.45e-012       70.6         1000       
   Water     38.3            360          1000       
   Soil      61.6            720          1000       
   Sediment  0.0709          3.24e+003    0          
     Persistence Time: 583 hr

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