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ChemSpider 2D Image | Kojic acid | C6H6O4

Kojic acid

  • Molecular FormulaC6H6O4
  • Average mass142.109 Da
  • Monoisotopic mass142.026611 Da
  • ChemSpider ID3708

More details:



Featured data source



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

207-922-4 [EINECS]
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4H-Pyran-4-one, 5-hydroxy-2- (hydroxymethyl)-
4H-Pyran-4-one, 5-hydroxy-2-(hydroxymethyl)- [ACD/Index Name]
501-30-4 [RN]
5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-on [German] [ACD/IUPAC Name]
5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one [ACD/IUPAC Name]
5-Hydroxy-2-(hydroxyméthyl)-4H-pyran-4-one [French] [ACD/IUPAC Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

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ACon1_000622 [DBID]
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Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.5±0.1 g/cm3
Boiling Point: 401.7±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±2.1 mmHg at 25°C
Enthalpy of Vaporization: 75.4±6.0 kJ/mol
Flash Point: 179.9±22.2 °C
Index of Refraction: 1.607
Molar Refractivity: 31.8±0.3 cm3
#H bond acceptors: 4
#H bond donors: 2
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: -0.64
ACD/LogD (pH 5.5): -0.96
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 7.18
ACD/LogD (pH 7.4): -1.03
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 6.11
Polar Surface Area: 67 Å2
Polarizability: 12.6±0.5 10-24cm3
Surface Tension: 71.6±3.0 dyne/cm
Molar Volume: 92.1±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) =  -1.25
    Log Kow (Exper. database match) =  -0.64
       Exper. Ref:  Kontoghiorghes,GJ (1988)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  322.99  (Adapted Stein & Brown method)
    Melting Pt (deg C):  96.23  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  7.68E-007  (Modified Grain method)
    MP  (exp database):  153.5 deg C
    Subcooled liquid VP: 1.57E-005 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):  9.346e+005
       log Kow used: -0.64 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1.2522e+005 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.39E-007  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.537E-013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.64  (exp database)
  Log Kaw used:  -5.010  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  4.370
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6568
   Biowin2 (Non-Linear Model)     :   0.3416
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.1739  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8696  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7926
   Biowin6 (MITI Non-Linear Model):   0.8381
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3314
 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):  0.00209 Pa (1.57E-005 mm Hg)
  Log Koa (Koawin est  ): 4.370
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00143 
       Octanol/air (Koa) model:  5.75E-009 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0492 
       Mackay model           :  0.103 
       Octanol/air (Koa) model:  4.6E-007 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  64.3790 E-12 cm3/molecule-sec
      Half-Life =     0.166 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.994 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     1.312500 E-17 cm3/molecule-sec
      Half-Life =     0.873 Days (at 7E11 mol/cm3)
      Half-Life =     20.955 Hrs
   Fraction sorbed to airborne particulates (phi): 0.076 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  10
      Log Koc:  1.000 

 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: -0.64 (expkow database)

 Volatilization from Water:
    Henry LC:  2.39E-007 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:       2922  hours   (121.7 days)
    Half-Life from Model Lake : 3.197E+004  hours   (1332 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       0.44            3.35         1000       
   Water     47.4            360          1000       
   Soil      52.1            720          1000       
   Sediment  0.0868          3.24e+003    0          
     Persistence Time: 352 hr




                    

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