ChemSpider 2D Image | pyridine oxide | C5H5NO

pyridine oxide

  • Molecular FormulaC5H5NO
  • Average mass95.099 Da
  • Monoisotopic mass95.037117 Da
  • ChemSpider ID12229

More details:



Featured data source



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

1-Oxyde de pyridine [French] [ACD/IUPAC Name]
Pyridin-1-oxid [German] [ACD/IUPAC Name]
Pyridine 1-oxide [ACD/IUPAC Name]
Pyridine N-oxide
pyridine oxide
Pyridine, 1-oxide [ACD/Index Name]
Pyridine-1-oxyde [French]
Pyridine-N-Oxide
110408-34-9 [RN]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

131652_ALDRICH [DBID]
82811_FLUKA [DBID]
AC-907/25014058 [DBID]
AI3-60066 [DBID]
AIDS000717 [DBID]
AIDS-000717 [DBID]
CHEBI:29136 [DBID]
NSC 18250 [DBID]
NSC18250 [DBID]
ZINC00967324 [DBID]

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

Density: 1.0±0.1 g/cm3
Boiling Point: 270.0±9.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.5 mmHg at 25°C
Enthalpy of Vaporization: 48.8±3.0 kJ/mol
Flash Point: 117.1±18.7 °C
Index of Refraction: 1.517
Molar Refractivity: 27.8±0.5 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: -1.20
ACD/LogD (pH 5.5): -0.90
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 7.66
ACD/LogD (pH 7.4): -0.90
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 7.66
Polar Surface Area: 25 Å2
Polarizability: 11.0±0.5 10-24cm3
Surface Tension: 40.6±7.0 dyne/cm
Molar Volume: 92.1±7.0 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) =  0.32

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  177.97  (Adapted Stein & Brown method)
    Melting Pt (deg C):  15.74  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.61  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  6.341e+004
       log Kow used: 0.32 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  40386 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.217E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7018
   Biowin2 (Non-Linear Model)     :   0.8381
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9868  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7091  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4673
   Biowin6 (MITI Non-Linear Model):   0.5871
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3589
 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):  73.3 Pa (0.55 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  4.09E-008 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.48E-006 
       Mackay model           :  3.27E-006 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.5100 E-12 cm3/molecule-sec
      Half-Life =    20.973 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.38E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  53.46
      Log Koc:  1.728 

 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: 0.32 (estimated)

 Volatilization from Water:
    Henry LC:  1.22E-006 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River:      472.8  hours   (19.7 days)
    Half-Life from Model Lake :       5240  hours   (218.3 days)

 Removal In Wastewater Treatment:
    Total removal:               1.92  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  percent
    Total to Air:                0.07  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       6.51            503          1000       
   Water     43.1            360          1000       
   Soil      50.3            720          1000       
   Sediment  0.0804          3.24e+003    0          
     Persistence Time: 402 hr


 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  0.32

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  177.97  (Adapted Stein & Brown method)
    Melting Pt (deg C):  15.74  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.61  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  6.341e+004
       log Kow used: 0.32 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  40386 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.217E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7018
   Biowin2 (Non-Linear Model)     :   0.8381
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9868  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7091  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4673
   Biowin6 (MITI Non-Linear Model):   0.5871
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.3589
 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):  73.3 Pa (0.55 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  4.09E-008 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.48E-006 
       Mackay model           :  3.27E-006 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.5100 E-12 cm3/molecule-sec
      Half-Life =    20.973 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.38E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  53.46
      Log Koc:  1.728 

 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: 0.32 (estimated)

 Volatilization from Water:
    Henry LC:  1.22E-006 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River:      472.8  hours   (19.7 days)
    Half-Life from Model Lake :       5240  hours   (218.3 days)

 Removal In Wastewater Treatment:
    Total removal:               1.92  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  percent
    Total to Air:                0.07  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       6.51            503          1000       
   Water     43.1            360          1000       
   Soil      50.3            720          1000       
   Sediment  0.0804          3.24e+003    0          
     Persistence Time: 402 hr




                    

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