ChemSpider 2D Image | 2,3-Epoxybutane | C4H8O


  • Molecular FormulaC4H8O
  • Average mass72.106 Da
  • Monoisotopic mass72.057518 Da
  • ChemSpider ID17595

More details:

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

2,3-Dimethyloxiran [German] [ACD/IUPAC Name]
2,3-Dimethyloxirane [ACD/IUPAC Name]
2,3-Diméthyloxirane [French] [ACD/IUPAC Name]
Oxirane, 2,3-dimethyl- [ACD/Index Name]
(2R,3R)-2,3-Dimethyloxirane [ACD/IUPAC Name]
1758-33-4 [RN]
2,3-Butylene oxide
2,3-Butylene Oxide (cis- and trans- mixture)

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

41034_FLUKA [DBID]

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

Density: 0.9±0.1 g/cm3
Boiling Point: 56.5±0.0 °C at 760 mmHg
Vapour Pressure: 239.2±0.1 mmHg at 25°C
Enthalpy of Vaporization: 28.7±3.0 kJ/mol
Flash Point: -21.7±0.0 °C
Index of Refraction: 1.396
Molar Refractivity: 20.2±0.3 cm3
#H bond acceptors: 1
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 0.80
ACD/LogD (pH 5.5): 0.70
ACD/BCF (pH 5.5): 2.00
ACD/KOC (pH 5.5): 57.20
ACD/LogD (pH 7.4): 0.70
ACD/BCF (pH 7.4): 2.00
ACD/KOC (pH 7.4): 57.20
Polar Surface Area: 13 Å2
Polarizability: 8.0±0.5 10-24cm3
Surface Tension: 22.4±3.0 dyne/cm
Molar Volume: 84.3±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) =  0.79

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  49.90  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -91.29  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  240  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -85 deg C
    BP  (exp database):  56.5 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  2.848e+004
       log Kow used: 0.79 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  48107 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.12E-004  atm-m3/mole
   Group Method:   2.87E-004  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  7.996E-004 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.79  (KowWin est)
  Log Kaw used:  -2.062  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  2.852
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.3659
   Biowin2 (Non-Linear Model)     :   0.1908
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0312  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7340  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5248
   Biowin6 (MITI Non-Linear Model):   0.5292
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.4986
 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):  3.16E+004 Pa (237 mm Hg)
  Log Koa (Koawin est  ): 2.852
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  9.49E-011 
       Octanol/air (Koa) model:  1.75E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  3.43E-009 
       Mackay model           :  7.59E-009 
       Octanol/air (Koa) model:  1.4E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.9168 E-12 cm3/molecule-sec
      Half-Life =    11.667 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 5.51E-009 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  3.843
      Log Koc:  0.585 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Ka (acid-catalyzed) at 25 deg C :  3.450E-001  L/mol-sec
  Ka Half-Life at pH 7:     232.510  days   

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.500 (BCF = 3.162)
       log Kow used: 0.79 (estimated)

 Volatilization from Water:
    Henry LC:  0.000212 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      3.212  hours
    Half-Life from Model Lake :      106.2  hours   (4.427 days)

 Removal In Wastewater Treatment:
    Total removal:              10.97  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.64  percent
    Total to Air:                9.25  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       22.1            280          1000       
   Water     42.9            360          1000       
   Soil      34.9            720          1000       
   Sediment  0.083           3.24e+003    0          
     Persistence Time: 230 hr


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