ChemSpider 2D Image | Pyrimidin-1-ium | C4H5N2

Pyrimidin-1-ium

  • Molecular FormulaC4H5N2
  • Average mass81.095 Da
  • Monoisotopic mass81.044724 Da
  • ChemSpider ID10533069

  • Charge - Charge

More details:

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

Pyrimidin-1-ium [ACD/IUPAC Name]
Pyrimidin-1-ium [German] [ACD/IUPAC Name]
Pyrimidin-1-ium [French] [ACD/IUPAC Name]
Pyrimidine, conjugate monoacid [ACD/Index Name]

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

Density:
Boiling Point: 122.4±9.0 °C at 760 mmHg
Vapour Pressure: 16.8±0.2 mmHg at 25°C
Enthalpy of Vaporization: 43.1±0.0 kJ/mol
Flash Point: 31.1±0.0 °C
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: -0.33
ACD/LogD (pH 5.5): -0.17
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 19.34
ACD/LogD (pH 7.4): -0.17
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 19.34
Polar Surface Area: 27 Å2
Polarizability:
Surface Tension:
Molar Volume:

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™ 

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  -0.06
    Log Kow (Exper. database match) =  -0.40
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  124.28  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -11.22  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  13.2  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  22 deg C
    BP  (exp database):  123.8 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  2.872e+005
       log Kow used: -0.40 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  1e+006 mg/L (25 deg C)
        Exper. Ref:  MERCK INDEX (1996)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  5.4309e+005 mg/L
    Wat Sol (Exper. database match) =  1000000.00
       Exper. Ref:  MERCK INDEX (1996)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.92E-006  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.843E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.40  (exp database)
  Log Kaw used:  -3.923  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.523
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7094
   Biowin2 (Non-Linear Model)     :   0.8666
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0222  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7322  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5067
   Biowin6 (MITI Non-Linear Model):   0.6669
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.4544
 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):  1.64E+003 Pa (12.3 mm Hg)
  Log Koa (Koawin est  ): 3.523
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.83E-009 
       Octanol/air (Koa) model:  8.18E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  6.61E-008 
       Mackay model           :  1.46E-007 
       Octanol/air (Koa) model:  6.55E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.2300 E-12 cm3/molecule-sec
      Half-Life =    46.504 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.06E-007 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  17.93
      Log Koc:  1.254 

 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: -0.40 (expkow database)

 Volatilization from Water:
    Henry LC:  2.92E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      180.4  hours   (7.515 days)
    Half-Life from Model Lake :       2043  hours   (85.11 days)

 Removal In Wastewater Treatment:
    Total removal:               2.01  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.17  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       8.14            1.12e+003    1000       
   Water     44.3            360          1000       
   Soil      47.4            720          1000       
   Sediment  0.0814          3.24e+003    0          
     Persistence Time: 382 hr

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