ChemSpider 2D Image | a-Methylmalate | C5H6O5

a-Methylmalate

  • Molecular FormulaC5H6O5
  • Average mass146.099 Da
  • Monoisotopic mass146.022614 Da
  • ChemSpider ID3579615

  • Charge - Charge

More details:

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

2-Deoxy-3-C-methyltetrarate
2-Hydroxy-2-methyl-butanedioate
2-Hydroxy-2-methylsuccinat [German] [ACD/IUPAC Name]
2-Hydroxy-2-methylsuccinate [ACD/IUPAC Name]
2-Hydroxy-2-méthylsuccinate [French] [ACD/IUPAC Name]
a-Methylmalate
Butanedioic acid, 2-hydroxy-2-methyl-, ion(2-) [ACD/Index Name]
α-methylmalate
2-hydroxy-2-methylbutanedioate
2-methylmalate
More...

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

CHEBI:13997 [DBID]
  • Miscellaneous

    • Chemical Class:

      A dicarboxylic acid dianion that is obtained by removal of a proton from both of the carboxylic acid groups of citramalic acid. ChEBI CHEBI:13997

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density:
Boiling Point: 295.2±25.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.4 mmHg at 25°C
Enthalpy of Vaporization: 62.1±6.0 kJ/mol
Flash Point: 146.6±19.7 °C
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 5
#H bond donors: 3
#Freely Rotating Bonds: 3
#Rule of 5 Violations: 0
ACD/LogP: -0.91
ACD/LogD (pH 5.5): -3.84
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): -5.45
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 100 Å2
Polarizability:
Surface Tension:
Molar Volume:

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  -1.23

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  323.29  (Adapted Stein & Brown method)
    Melting Pt (deg C):  111.56  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  4.22E-006  (Modified Grain method)
    Subcooled liquid VP: 3E-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):  1e+006
       log Kow used: -1.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1e+006 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   1.12E-012  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  8.225E-013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -1.23  (KowWin est)
  Log Kaw used:  -10.339  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.109
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6385
   Biowin2 (Non-Linear Model)     :   0.6150
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.3889  (days-weeks  )
   Biowin4 (Primary Survey Model) :   4.2517  (hours-days  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7513
   Biowin6 (MITI Non-Linear Model):   0.7969
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8218
 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):  0.004 Pa (3E-005 mm Hg)
  Log Koa (Koawin est  ): 9.109
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00075 
       Octanol/air (Koa) model:  0.000316 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0264 
       Mackay model           :  0.0566 
       Octanol/air (Koa) model:  0.0246 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   4.3587 E-12 cm3/molecule-sec
      Half-Life =     2.454 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    29.447 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.0415 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  1
      Log Koc:  0.000 

 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: -1.23 (estimated)

 Volatilization from Water:
    Henry LC:  1.12E-012 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 6.362E+008  hours   (2.651E+007 days)
    Half-Life from Model Lake : 6.941E+009  hours   (2.892E+008 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       4.06e-005       58.9         1000       
   Water     34.4            208          1000       
   Soil      65.5            416          1000       
   Sediment  0.0596          1.87e+003    0          
     Persistence Time: 387 hr

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