ChemSpider 2D Image | 3-Hydroxy-2-methylpropanoic acid | C4H8O3

3-Hydroxy-2-methylpropanoic acid

  • Molecular FormulaC4H8O3
  • Average mass104.104 Da
  • Monoisotopic mass104.047340 Da
  • ChemSpider ID85

More details:






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

3-Hydroxy-2-methylpropanoic acid [ACD/IUPAC Name]
3-Hydroxy-2-methylpropansäure [German] [ACD/IUPAC Name]
594-61-6 [RN]
Acide 3-hydroxy-2-méthylpropanoïque [French] [ACD/IUPAC Name]
Propanoic acid, 3-hydroxy-2-methyl- [ACD/Index Name]
3-Hydroxy-2-methylpropionic acid
3-Hydroxy-2-methyl-propionic acid
3-Hydroxy-2-methylpropionicacid
3-Hydroxyisobutyric acid
More...

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

C01188 [DBID]
CHEBI:18064 [DBID]

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

Density: 1.2±0.1 g/cm3
Boiling Point: 252.9±23.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.1 mmHg at 25°C
Enthalpy of Vaporization: 57.0±6.0 kJ/mol
Flash Point: 121.0±19.1 °C
Index of Refraction: 1.455
Molar Refractivity: 23.6±0.3 cm3
#H bond acceptors: 3
#H bond donors: 2
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: -1.14
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): -3.69
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 58 Å2
Polarizability: 9.4±0.5 10-24cm3
Surface Tension: 46.4±3.0 dyne/cm
Molar Volume: 87.1±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) =  -0.47

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  229.50  (Adapted Stein & Brown method)
    Melting Pt (deg C):  36.26  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.00884  (Modified Grain method)
    Subcooled liquid VP: 0.0112 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: -0.47 (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 :   3.53E-011  atm-m3/mole
   Group Method:   1.04E-011  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  1.211E-009 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.47  (KowWin est)
  Log Kaw used:  -8.841  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  8.371
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.9294
   Biowin2 (Non-Linear Model)     :   0.9641
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.4937  (days-weeks  )
   Biowin4 (Primary Survey Model) :   4.2126  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7439
   Biowin6 (MITI Non-Linear Model):   0.8816
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.9362
 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):  1.49 Pa (0.0112 mm Hg)
  Log Koa (Koawin est  ): 8.371
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.01E-006 
       Octanol/air (Koa) model:  5.77E-005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  7.26E-005 
       Mackay model           :  0.000161 
       Octanol/air (Koa) model:  0.00459 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   6.6378 E-12 cm3/molecule-sec
      Half-Life =     1.611 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    19.337 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.000117 (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: -0.47 (estimated)

 Volatilization from Water:
    Henry LC:  1.04E-011 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River: 5.744E+007  hours   (2.393E+006 days)
    Half-Life from Model Lake : 6.266E+008  hours   (2.611E+007 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       0.000366        38.7         1000       
   Water     34.3            208          1000       
   Soil      65.6            416          1000       
   Sediment  0.0596          1.87e+003    0          
     Persistence Time: 388 hr




                    

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