ChemSpider 2D Image | 5,6-Epoxycholestane | C27H46O


  • Molecular FormulaC27H46O
  • Average mass386.654 Da
  • Monoisotopic mass386.354858 Da
  • ChemSpider ID248235

More details:

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

5,6-Epoxycholestan [German] [ACD/IUPAC Name]
5,6-Epoxycholestane [ACD/IUPAC Name]
5,6-Époxycholestane [French] [ACD/IUPAC Name]
Cholestane, 5,6-epoxy- [ACD/Index Name]
20230-22-2 [RN]
20308-52-5 [RN]
5α, 6α-Epoxycholestane
5α-Cholestane, 5,6α-epoxy-

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

NSC134922 [DBID]

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

Density: 1.0±0.1 g/cm3
Boiling Point: 428.7±13.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.0 mmHg at 25°C
Enthalpy of Vaporization: 65.7±3.0 kJ/mol
Flash Point: 180.1±16.7 °C
Index of Refraction: 1.522
Molar Refractivity: 118.5±0.4 cm3
#H bond acceptors: 1
#H bond donors: 0
#Freely Rotating Bonds: 5
#Rule of 5 Violations: 1
ACD/LogP: 9.59
ACD/LogD (pH 5.5): 8.24
ACD/BCF (pH 5.5): 1000000.00
ACD/KOC (pH 5.5): 720107.88
ACD/LogD (pH 7.4): 8.24
ACD/BCF (pH 7.4): 1000000.00
ACD/KOC (pH 7.4): 720107.88
Polar Surface Area: 13 Å2
Polarizability: 47.0±0.5 10-24cm3
Surface Tension: 37.1±5.0 dyne/cm
Molar Volume: 388.6±5.0 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) =  8.88

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  400.99  (Adapted Stein & Brown method)
    Melting Pt (deg C):  147.50  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.07E-006  (Modified Grain method)
    Subcooled liquid VP: 1.87E-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):  9.618e-005
       log Kow used: 8.88 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.0011261 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   5.41E-003  atm-m3/mole
   Group Method:   3.97E-004  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  5.660E-003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  8.88  (KowWin est)
  Log Kaw used:  -0.655  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.535
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :  -0.3357
   Biowin2 (Non-Linear Model)     :   0.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.6997  (recalcitrant)
   Biowin4 (Primary Survey Model) :   2.8198  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.0548
   Biowin6 (MITI Non-Linear Model):   0.0075
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.9583
 Ready Biodegradability Prediction:   NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  0.00249 Pa (1.87E-005 mm Hg)
  Log Koa (Koawin est  ): 9.535
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.0012 
       Octanol/air (Koa) model:  0.000841 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0416 
       Mackay model           :  0.0878 
       Octanol/air (Koa) model:  0.0631 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  37.5646 E-12 cm3/molecule-sec
      Half-Life =     0.285 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     3.417 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.0647 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  2.754E+006
      Log Koc:  6.440 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Ka (acid-catalyzed) at 25 deg C :  3.819E+000  L/mol-sec
  Ka Half-Life at pH 7:      21.004  days   

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 2.232 (BCF = 170.4)
       log Kow used: 8.88 (estimated)

 Volatilization from Water:
    Henry LC:  0.00541 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      2.219  hours
    Half-Life from Model Lake :      189.1  hours   (7.879 days)

 Removal In Wastewater Treatment:
    Total removal:              94.03  percent
    Total biodegradation:        0.78  percent
    Total sludge adsorption:    93.25  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       0.0277          6.83         1000       
   Water     0.75            4.32e+003    1000       
   Soil      39.4            8.64e+003    1000       
   Sediment  59.8            3.89e+004    0          
     Persistence Time: 1.07e+004 hr


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