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ChemSpider 2D Image | 2,5-Dimethyl-3-propylpyrazine | C9H14N2

2,5-Dimethyl-3-propylpyrazine

  • Molecular FormulaC9H14N2
  • Average mass150.221 Da
  • Monoisotopic mass150.115692 Da
  • ChemSpider ID79062

More details:

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

18433-97-1 [RN]
2,5-Dimethyl-3-propylpyrazin [German] [ACD/IUPAC Name]
2,5-Dimethyl-3-propylpyrazine [ACD/IUPAC Name]
2,5-Diméthyl-3-propylpyrazine [French] [ACD/IUPAC Name]
Pyrazine, 2,5-dimethyl-3-propyl- [ACD/Index Name]
T6N DNJ B1 C3 E1 [WLN]
2,5-Dimethyl-3-propyl-Pyrazine
2,5-Dimethyl-3-pyropylpyrazine
MFCD00055025
Pyrazine, 2,5-dimethyl-3-propyl- (8CI,9CI)

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

  • Gas Chromatography

    • Retention Index (Kovats):

      1206 (estimated with error: 83) NIST Spectra mainlib_4658, replib_121544, replib_109520

    • Retention Index (Normal Alkane):

      1142 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 80 C; End T: 200 C; CAS no: 18433971; Active phase: OV-101; Carrier gas: N2; Data type: Normal alkane RI; Authors: Mihara, S.; Masuda, H., Correlation between molecular structures and retention indices of pyrazines, J. Chromatogr., 402, 1987, 309-317.) NIST Spectra nist ri
      1162 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 35 C; End T: 250 C; End time: 45 min; Start time: 15 min; CAS no: 18433971; Active phase: HP-5; Phase thickness: 0.52 um; Data type: Normal alkane RI; Authors: Boylston, T.D.; Viniyard, B.T., Isolation of volatile flavor compounds from peanut butter using purge-and-trap technique, in Instrumental Methods in Food and Beverage Analysis, D. Wetzel and G. Charalambous, ed(s), 1998, 225-243.) NIST Spectra nist ri
      1161 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.31 mm; Column length: 50 m; Column type: Capillary; Heat rate: 5 K/min; Start T: -30 C; End T: 250 C; Start time: 3 min; CAS no: 18433971; Active phase: SE-54; Carrier gas: He; Phase thickness: 0.52 um; Data type: Normal alkane RI; Authors: Vercellotti, J.R.; Kuan, J.-C.W.; Liu, R.H.; Legendre, M.G.; St Angelo, A.J.; Dupuy, H.P., Analysis of volatile heteroatomic meat flavor principles by purge-and-trap/gas chromatography-mass spectrometry, J. Agric. Food Chem., 35(6), 1987, 1030-1035.) NIST Spectra nist ri
      1525 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 1.5 K/min; Start T: 50 C; End T: 210 C; End time: 10 min; Start time: 5 min; CAS no: 18433971; Active phase: CP-Wax 52CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Chyau, C.-C.; Lin, Y.-C.; Mau, J.-L., Storage stability of deep-fried shallot flavoring, J. Agric. Food Chem., 45, 1997, 3211-3215., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 1.5 K/min; Start T: 50 C; End T: 210 C; End time: 10 min; Start time: 5 min; CAS no: 18433971; Active phase: DB-Wax; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Chyau, C.-C.; Mau, J.-L., Effects of various oils on volatile compounds of deep-fried shallot flavouring, Food Chem., 74, 2001, 41-46.) NIST Spectra nist ri
      1516.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.75 mm; Column length: 30 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 70 C; End T: 180 C; Start time: 4 min; CAS no: 18433971; Active phase: Carbowax 20M; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Arnoldi, A.; Arnoldi, C.; Baldi, O.; Griffini, A., Flavor components in the Maillard reaction of different amino acids with fructose in cocoa butter-water. Qualitative and quantitative analysis of pyrazines, J. Agric. Food Chem., 36(5), 1988, 988-992.) NIST Spectra nist ri
      1474 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column type: Capillary; CAS no: 18433971; Active phase: Carbowax 20M; Data type: Normal alkane RI; Authors: Mihara, S.; Masuda, H., Correlation between molecular structures and retention indices of pyrazines, J. Chromatogr., 402, 1987, 309-317.) NIST Spectra nist ri

    • Retention Index (Linear):

      1141 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 40 C; End T: 220 C; End time: 30 min; CAS no: 18433971; Active phase: HP-1; Phase thickness: 1.5 um; Data type: Linear RI; Authors: Zhang, Y.; Dorjpalam, B.; Ho, C.-T., Contribution of peptides to volatile formation in the Maillard reaction of casein hydrolysate with glucose, J. Agric. Food Chem., 40, 1992, 2467-2471.) NIST Spectra nist ri
      1163 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 240 C; CAS no: 18433971; Active phase: SE-30; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Misharina, T.A.; Golovnya, R.V.; Yakovleva, V.N.; Vitt, S.V., Pyrazines formed in model glycerin-water systems, Russ. Chem. Bull. (Engl. Transl.), 40(9), 1991, 1742-1748, In original 1972-1979.) NIST Spectra nist ri
      1131 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 40 C; End T: 280 C; End time: 5 min; CAS no: 18433971; Active phase: HP-5; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Solina, M.; Baumgartner, P.; Johnson, R.L.; Whitfield, F.B., Volatile aroma components of soy protein isolate and acid-hydrolysed vegetable protein, Food Chem., 90, 2005, 861-873.) NIST Spectra nist ri

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

Density: 1.0±0.1 g/cm3
Boiling Point: 208.3±35.0 °C at 760 mmHg
Vapour Pressure: 0.3±0.4 mmHg at 25°C
Enthalpy of Vaporization: 42.6±3.0 kJ/mol
Flash Point: 77.6±17.6 °C
Index of Refraction: 1.498
Molar Refractivity: 46.3±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 2.16
ACD/LogD (pH 5.5): 1.86
ACD/BCF (pH 5.5): 15.13
ACD/KOC (pH 5.5): 243.19
ACD/LogD (pH 7.4): 1.86
ACD/BCF (pH 7.4): 15.16
ACD/KOC (pH 7.4): 243.67
Polar Surface Area: 26 Å2
Polarizability: 18.3±0.5 10-24cm3
Surface Tension: 36.3±3.0 dyne/cm
Molar Volume: 157.8±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) =  2.56

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  228.43  (Adapted Stein & Brown method)
    Melting Pt (deg C):  42.93  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.0549  (Modified Grain method)
    Subcooled liquid VP: 0.0798 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):  488.9
       log Kow used: 2.56 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  2279.9 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.91E-006  atm-m3/mole
   Group Method:   3.88E-008  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  2.220E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.56  (KowWin est)
  Log Kaw used:  -3.549  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.109
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8400
   Biowin2 (Non-Linear Model)     :   0.9313
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.6426  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.4254  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3505
   Biowin6 (MITI Non-Linear Model):   0.3203
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.1783
 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):  10.6 Pa (0.0798 mm Hg)
  Log Koa (Koawin est  ): 6.109
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.82E-007 
       Octanol/air (Koa) model:  3.16E-007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.02E-005 
       Mackay model           :  2.26E-005 
       Octanol/air (Koa) model:  2.52E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   4.5659 E-12 cm3/molecule-sec
      Half-Life =     2.343 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    28.111 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.64E-005 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  277.2
      Log Koc:  2.443 

 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 = 1.275 (BCF = 18.82)
       log Kow used: 2.56 (estimated)

 Volatilization from Water:
    Henry LC:  6.91E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      105.1  hours   (4.379 days)
    Half-Life from Model Lake :       1249  hours   (52.06 days)

 Removal In Wastewater Treatment:
    Total removal:               3.65  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     3.17  percent
    Total to Air:                0.38  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       1.64            56.2         1000       
   Water     22.2            900          1000       
   Soil      76              1.8e+003     1000       
   Sediment  0.203           8.1e+003     0          
     Persistence Time: 951 hr

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