ChemSpider 2D Image | Pyridazine | C4H4N2

Pyridazine

  • Molecular FormulaC4H4N2
  • Average mass80.088 Da
  • Monoisotopic mass80.037445 Da
  • ChemSpider ID8902

More details:



Featured data source



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

1,2-Diazabenzene
1,2-Diazin [German]
1,2-diazine
289-80-5 [RN]
diazine
o-diazine
Oizine
orthodiazine
Pyridazin [German] [ACD/IUPAC Name]
Pyridazine [ACD/Index Name] [ACD/IUPAC Name] [Wiki]
More...

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

82680_FLUKA [DBID]
CHEBI:30954 [DBID]
NSC 90792 [DBID]
NSC51111 [DBID]
NSC90792 [DBID]
P57204_ALDRICH [DBID]
ZINC01682358 [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Safety:

      26-37 Alfa Aesar A13266
      36/37/38 Alfa Aesar A13266
      H315-H319-H335 Alfa Aesar A13266
      IRRITANT Matrix Scientific 075885
      P280g-P305+P351+P338 Alfa Aesar A13266
      Warning Alfa Aesar A13266
      WARNING: Irritates lungs, eyes, skin Alfa Aesar A13266
  • Gas Chromatography
    • Retention Index (Kovats):

      668 (estimated with error: 83) NIST Spectra mainlib_230162, replib_425
      915 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column diameter: 0.3 mm; Column length: 50 m; Column type: Capillary; Start T: 110 C; CAS no: 289805; Active phase: OV-101; Carrier gas: He; Phase thickness: 0.4 um; Data type: Kovats RI; Authors: Golovnya, R.V.; Kuz'menko, T.E.; Zhuravleva, I.L., Gas chromatographic indicator of the ability of five- and six-membered heterocyclic nitrogen-containing compounds for self-association in pure liquids, Russ. Chem. Bull. (Engl. Transl.), 48(4), 1999, 726-729., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column diameter: 0.3 mm; Column length: 50 m; Column type: Capillary; Start T: 110 C; CAS no: 289805; Active phase: OV-101; Carrier gas: He; Phase thickness: 0.4 um; Data type: Kovats RI; Authors: Zhuravleva, I.L., Evaluation of the polarity and boiling points of nitrogen-containing heterocyclic compounds by gas chromatography, Russ. Chem. Bull. (Engl. Transl.), 49(2), 2000, 325-328., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Capillary; Start T: 110 C; CAS no: 289805; Active phase: OV-101; Carrier gas: He; Phase thickness: 0.4 um; Data type: Kovats RI; Authors: Golovnya, R.V.; Kuz'menko, T.E.; Krikunova, N.I., The influence of alkyl substituents on the chromatographic indicator of self-association of N-containing heterocyclic compounds, Russ. Chem. Bull. (Engl. Transl.), 49(2), 2000, 321-324.) NIST Spectra nist ri
    • Retention Index (Linear):

      894 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 3.05 m; Column type: Packed; Heat rate: 10 K/min; Start T: 40 C; End T: 250 C; End time: 60 min; Start time: 4 min; CAS no: 289805; Active phase: SE-30; Carrier gas: He; Substrate: Supelcoport and Chromosorb; Data type: Linear RI; Authors: Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C., Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns, J. Chromatogr., 436, 1988, 137-172.) NIST Spectra nist ri

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

Density: 1.1±0.1 g/cm3
Boiling Point: 208.0±0.0 °C at 760 mmHg
Vapour Pressure: 0.3±0.3 mmHg at 25°C
Enthalpy of Vaporization: 42.6±3.0 kJ/mol
Flash Point: 85.0±0.0 °C
Index of Refraction: 1.503
Molar Refractivity: 22.4±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: -0.77
ACD/LogD (pH 5.5): -0.37
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 14.88
ACD/LogD (pH 7.4): -0.37
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 14.94
Polar Surface Area: 26 Å2
Polarizability: 8.9±0.5 10-24cm3
Surface Tension: 44.1±3.0 dyne/cm
Molar Volume: 75.9±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) =  -0.06
    Log Kow (Exper. database match) =  -0.72
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  195.63  (Adapted Stein & Brown method)
    Melting Pt (deg C):  9.61  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.241  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -8 deg C
    BP  (exp database):  208 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  5.388e+005
       log Kow used: -0.72 (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 :   2.87E-006  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.714E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.72  (exp database)
  Log Kaw used:  -3.931  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.211
      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):  29.6 Pa (0.222 mm Hg)
  Log Koa (Koawin est  ): 3.211
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.01E-007 
       Octanol/air (Koa) model:  3.99E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  3.66E-006 
       Mackay model           :  8.11E-006 
       Octanol/air (Koa) model:  3.19E-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): 5.88E-006 (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: -0.72 (expkow database)

 Volatilization from Water:
    Henry LC:  2.87E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      183.5  hours   (7.645 days)
    Half-Life from Model Lake :       2077  hours   (86.53 days)

 Removal In Wastewater Treatment:
    Total removal:               2.01  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.16  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       8.13            1.12e+003    1000       
   Water     44.4            360          1000       
   Soil      47.4            720          1000       
   Sediment  0.0814          3.24e+003    0          
     Persistence Time: 382 hr




                    

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