ChemSpider 2D Image | 2-Oxo-3-butynoic acid | C4H2O3

2-Oxo-3-butynoic acid

  • Molecular FormulaC4H2O3
  • Average mass98.057 Da
  • Monoisotopic mass98.000397 Da
  • ChemSpider ID149961

More details:

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

2-Oxo-3-butinsäure [German] [ACD/IUPAC Name]
2-Oxo-3-butynoic acid [ACD/IUPAC Name]
2-Oxobut-3-ynoic acid
3-Butynoic acid, 2-oxo- [ACD/Index Name]
Acide 2-oxo-3-butynoïque [French] [ACD/IUPAC Name]
2-keto-3-butynoic acid
2-keto-3-butynoicacid
2-Oxo-3-butynoate [ACD/IUPAC Name]
56842-75-2 [RN]

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

Density: 1.4±0.1 g/cm3
Boiling Point: 231.3±23.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.0 mmHg at 25°C
Enthalpy of Vaporization: 51.5±6.0 kJ/mol
Flash Point: 108.0±19.1 °C
Index of Refraction: 1.483
Molar Refractivity: 20.0±0.3 cm3
#H bond acceptors: 3
#H bond donors: 1
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: -0.08
ACD/LogD (pH 5.5): -4.01
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): -4.19
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 54 Å2
Polarizability: 7.9±0.5 10-24cm3
Surface Tension: 62.7±3.0 dyne/cm
Molar Volume: 70.1±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) =  -1.52

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  213.67  (Adapted Stein & Brown method)
    Melting Pt (deg C):  38.12  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.128  (Modified Grain method)
    Subcooled liquid VP: 0.168 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: -1.52 (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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.04E-010  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.652E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -1.52  (KowWin est)
  Log Kaw used:  -7.607  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.087
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7736
   Biowin2 (Non-Linear Model)     :   0.9055
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.3471  (days-weeks  )
   Biowin4 (Primary Survey Model) :   4.0918  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.6016
   Biowin6 (MITI Non-Linear Model):   0.6962
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  1.0229
 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):  22.4 Pa (0.168 mm Hg)
  Log Koa (Koawin est  ): 6.087
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.34E-007 
       Octanol/air (Koa) model:  3E-007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  4.84E-006 
       Mackay model           :  1.07E-005 
       Octanol/air (Koa) model:  2.4E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   2.9700 E-12 cm3/molecule-sec
      Half-Life =     3.601 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    43.216 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     0.003000 E-17 cm3/molecule-sec
      Half-Life =   382.000 Days (at 7E11 mol/cm3)
   Fraction sorbed to airborne particulates (phi): 7.78E-006 (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: -1.52 (estimated)

 Volatilization from Water:
    Henry LC:  6.04E-010 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 9.599E+005  hours   (4E+004 days)
    Half-Life from Model Lake : 1.047E+007  hours   (4.363E+005 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       0.0212          85.6         1000       
   Water     34.5            208          1000       
   Soil      65.4            416          1000       
   Sediment  0.0597          1.87e+003    0          
     Persistence Time: 387 hr

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