ChemSpider 2D Image | 3136 | C8H12N2

3136

  • Molecular FormulaC8H12N2
  • Average mass136.194 Da
  • Monoisotopic mass136.100052 Da
  • ChemSpider ID25552

More details:






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

15707-24-1 [RN]
2,3-Diethylpyrazin [German] [ACD/IUPAC Name]
2,3-Diethylpyrazine [ACD/IUPAC Name]
2,3-Diéthylpyrazine [French] [ACD/IUPAC Name]
239-800-1 [EINECS]
3136
MFCD00006151 [MDL number]
Pyrazine, 2,3-diethyl- [ACD/Index Name]
"2,3-DIETHYLPYRAZINE"|"2,3-DIETHYLPYRAZINE"
[15707-24-1]
More...

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

AD31A42VY0 [DBID]
292982_ALDRICH [DBID]
CCRIS 4693 [DBID]
FEMA No. 3136 [DBID]
UNII:AD31A42VY0 [DBID]
UNII-AD31A42VY0 [DBID]
W313602_ALDRICH [DBID]
ZINC00409293 [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      colourless to slightly yellow liquid with an earthy, nutty, baked potato odour Food and Agriculture Organization of the United Nations 2,3-Diethylpyrazine
      Not Available Novochemy [NC-33576]
    • Safety:

      20/21/22 Novochemy [NC-33576]
      20/21/36/37/39 Novochemy [NC-33576]
      23-26-37 Alfa Aesar A13277
      36/37/38 Alfa Aesar A13277
      CAUTION: May irritate eyes, skin, and respiratory tract Alfa Aesar A13277
      Danger Biosynth Q-100189
      GHS05; GHS07 Biosynth Q-100189
      GHS07; GHS09 Novochemy [NC-33576]
      H315; H318; H335 Biosynth Q-100189
      H315-H319-H335 Alfa Aesar A13277
      H332; H403 Novochemy [NC-33576]
      P102; P210; P262; P270; P302+P352; P308+P313 Novochemy [NC-33576]
      P261; P280; P305+P351+P338 Biosynth Q-100189
      P261-P280-P305+P351+P338-P304+P340-P405-P501a Alfa Aesar A13277
      R22 Novochemy [NC-33576]
      Warning Alfa Aesar A13277
      Warning Novochemy [NC-33576]
      WARNING: Irritates lungs, eyes, skin Alfa Aesar A13277
  • Gas Chromatography
    • Retention Index (Kovats):

      1093 (estimated with error: 83) NIST Spectra mainlib_343641, replib_160557, replib_109569
    • Retention Index (Normal Alkane):

      1065 (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: 15707241; 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
      1050.2 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.03 in; Column length: 500 ft; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 190 C; Start time: 2 min; CAS no: 15707241; Active phase: SF-96; Carrier gas: He; Data type: Normal alkane RI; Authors: Kinlin, T.E.; Muralidhara, R.; Pittet, A.O.; Sanderson, A.; Walradt, J.P., Volatile components of roasted filberts, J. Agric. Food Chem., 20(5), 1972, 1021-1028.) NIST Spectra nist ri
      1080 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; CAS no: 15707241; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84., Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 270 C; End time: 5 min; Start time: 4 min; CAS no: 15707241; Active phase: MDN-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: van Loon, W.A.M.; Linssen, J.P.H.; Legger, A.; Posthumus, M.A.; Voragen, A.G.J., Identification and olfactometry of French fries flavour extracted at mouth conditions, Food Chem., 90, 2005, 417-425.) NIST Spectra nist ri
      1088 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 295 C; Start time: 1.5 min; CAS no: 15707241; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84.) NIST Spectra nist ri
      1082 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 270 C; End time: 5 min; Start time: 4 min; CAS no: 15707241; Active phase: MDN-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: van Loon, W.A.M.; Linssen, J.P.H.; Legger, A.; Posthumus, M.A.; Voragen, A.G.J., Identification and olfactometry of French fries flavour extracted at mouth conditions, Food Chem., 90, 2005, 417-425.) NIST Spectra nist ri
      1090 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50 C(1min)=> 20C/min => 80C => 25C/min => 250C (3 min); CAS no: 15707241; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Hartmann, P.J., The effect of wine matrix ingredients on 3-alkyl-2-methoxypyrazines measurements by headspace solid-phase microextraction (HS-SPME), Master's Thesis, Virginia Tech., Blacksburg, Va., 2003, 30.) NIST Spectra nist ri
      1092 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50 C(1min)=> 20C/min => 80C => 25C/min => 250C (3 min); CAS no: 15707241; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Hartmann, P.J., The effect of wine matrix ingredients on 3-alkyl-2-methoxypyrazines measurements by headspace solid-phase microextraction (HS-SPME), Master's Thesis, Virginia Tech., Blacksburg, Va., 2003, 30.) NIST Spectra nist ri
      1449 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 70 C; End T: 160 C; Start time: 8 min; CAS no: 15707241; Active phase: DB-Wax; Carrier gas: He; Data type: Normal alkane RI; Authors: Wong, J.M.; Bernhard, R.A., Effect of nitrogen source on pyrazine formation, J. Agric. Food Chem., 36(1), 1988, 123-129.) NIST Spectra nist ri
      1417 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column type: Capillary; CAS no: 15707241; 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
      1449.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.03 in; Column length: 500 ft; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 190 C; Start time: 2 min; CAS no: 15707241; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Kinlin, T.E.; Muralidhara, R.; Pittet, A.O.; Sanderson, A.; Walradt, J.P., Volatile components of roasted filberts, J. Agric. Food Chem., 20(5), 1972, 1021-1028.) NIST Spectra nist ri
    • Retention Index (Linear):

      1063 (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: 260 C; End time: 40 min; CAS no: 15707241; Active phase: DB-1; Carrier gas: He; Phase thickness: 1.05 um; Data type: Linear RI; Authors: Izzo, H.V.; Ho, C.-T., Isolation and identification of the volatile components of an extruded autolyzed yeast extract, J. Agric. Food Chem., 39, 1991, 2245-2248.) NIST Spectra nist ri
      1106 (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: 4 K/min; Start T: 60 C; End T: 250 C; End time: 10 min; Start time: 5 min; CAS no: 15707241; Active phase: BPX-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Ames, J.M.; Guy, R.C.E.; Kipping, G.J., Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems, J. Agric. Food Chem., 49, 2001, 4315-4323.) NIST Spectra nist ri
      1458 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 35C(8min) =>4C/min =>60C =>6C/min =>160C=>20C/min =>200C(1min); CAS no: 15707241; Active phase: Supelcowax-10; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Bianchi, F.; Careri, M.; Mangia, A.; Musci, M., Retention indices in the analysis of food aroma volatile compounds in temperature-programmed gas chromatography: Database creation and evaluation of precision and robustness, J. Sep. Sci., 39, 2007, 563-572.) NIST Spectra nist ri
      1431 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 60 C; End T: 220 C; CAS no: 15707241; Active phase: OV-351; Carrier gas: He; Phase thickness: 0.2 um; Data type: Linear RI; Authors: Bonvehi, J.S., Investigation of aromatic compounds in roasted cocoa powder, Eur. Food Res. Technol., 221, 2005, 19-29.) NIST Spectra nist ri
      1452 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 20C(30s) =>fast=>60C =>4C/min => 220C (20min); CAS no: 15707241; Active phase: DB-Wax; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Cantergiani, E.; Brevard, H.; Krebs, Y.; Feria-Morales, A.; Amado, R.; Yeretzian, C., Characterisation of the aroma of green Mexican coffee and identification of mouldy/earthy defect, Eur. Food Res. Technol., 212, 2001, 648-657.) NIST Spectra nist ri

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

Density: 1.0±0.1 g/cm3
Boiling Point: 183.8±35.0 °C at 760 mmHg
Vapour Pressure: 1.0±0.3 mmHg at 25°C
Enthalpy of Vaporization: 40.3±3.0 kJ/mol
Flash Point: 70.6±0.0 °C
Index of Refraction: 1.499
Molar Refractivity: 41.5±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 1.70
ACD/LogD (pH 5.5): 1.62
ACD/BCF (pH 5.5): 9.96
ACD/KOC (pH 5.5): 180.31
ACD/LogD (pH 7.4): 1.62
ACD/BCF (pH 7.4): 9.96
ACD/KOC (pH 7.4): 180.39
Polar Surface Area: 26 Å2
Polarizability: 16.5±0.5 10-24cm3
Surface Tension: 36.9±3.0 dyne/cm
Molar Volume: 141.5±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) =  2.02
    Log Kow (Exper. database match) =  1.51
       Exper. Ref:  Yamagami,C et al. (1991)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  209.41  (Adapted Stein & Brown method)
    Melting Pt (deg C):  28.65  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.776  (Modified Grain method)
    BP  (exp database):  181 deg C
    Subcooled liquid VP: 0.836 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):  4458
       log Kow used: 1.51 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  6929.6 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.26E-006  atm-m3/mole
   Group Method:   3.08E-008  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  3.120E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.51  (exp database)
  Log Kaw used:  -3.592  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  5.102
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7920
   Biowin2 (Non-Linear Model)     :   0.9028
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.7485  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.5142  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2128
   Biowin6 (MITI Non-Linear Model):   0.2016
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.2425
 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):  111 Pa (0.836 mm Hg)
  Log Koa (Koawin est  ): 5.102
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.69E-008 
       Octanol/air (Koa) model:  3.1E-008 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  9.72E-007 
       Mackay model           :  2.15E-006 
       Octanol/air (Koa) model:  2.48E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   2.8988 E-12 cm3/molecule-sec
      Half-Life =     3.690 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    44.277 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.56E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  179.3
      Log Koc:  2.254 

 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 = 0.463 (BCF = 2.902)
       log Kow used: 1.51 (expkow database)

 Volatilization from Water:
    Henry LC:  6.26E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      110.3  hours   (4.598 days)
    Half-Life from Model Lake :       1302  hours   (54.23 days)

 Removal In Wastewater Treatment:
    Total removal:               2.32  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.88  percent
    Total to Air:                0.35  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       3.16            88.6         1000       
   Water     40.5            900          1000       
   Soil      56.2            1.8e+003     1000       
   Sediment  0.103           8.1e+003     0          
     Persistence Time: 668 hr




                    

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