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Pyrazine, 2,5-diethyl-


IR Spectrum

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOC.
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin WYANDOTTE CHEMICALS CORP.
Source reference COBLENTZ NO. 05953
Date 1955/12/13
Name(s) 2,5-diethylpyrazine
State LIQUID (NEAT)
Instrument BAIRD (GRATING)
Instrument parameters NaCl PRISM
Path length 0.003 CM
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY
Boiling point 188-189 C

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin TNO Volatile Compounds in Food - Chemical Concepts
NIST MS number 248941

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


Gas Chromatography

Go To: Top, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryBPX-51091.Ames, Guy, et al., 200150. m/0.32 mm/0.5 «mu»m, He, 60. C @ 5. min, 4. K/min, 250. C @ 10. min
CapillaryBPX-51089.Ames, Guy, et al., 2001, 250. m/0.32 mm/0.25 «mu»m, He, 60. C @ 5. min, 4. K/min, 250. C @ 10. min
CapillaryDB-11074.Wu, Wang, et al., 200060. m/0.25 mm/1. «mu»m, N2, 5. K/min, 200. C @ 30. min; Tstart: 30. C

Van Den Dool and Kratz RI, polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryCP-WAX 57CB1461.Salter L.J., Mottram D.S., et al., 198860. C @ 5. min, 4. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tend: 200. C
CapillaryCP-WAX 57CB1460.Whitfield, Mottram, et al., 1988He, 60. C @ 5. min, 4. K/min, 200. C @ 10. min; Column length: 50. m; Column diameter: 0.32 mm
CapillaryCP-WAX 57CB1463.Whitfield, Mottram, et al., 1988He, 60. C @ 5. min, 4. K/min, 200. C @ 10. min; Column length: 50. m; Column diameter: 0.32 mm

Van Den Dool and Kratz RI, polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryDB-Wax1425.Cantergiani, Brevard, et al., 200130. m/0.25 mm/0.25 «mu»m; Program: 20C(30s) => fast => 60C => 4C/min => 220C (20min)

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryUltra-11064.Du, Clery, et al., 200850. m/0.20 mm/0.33 «mu»m, Helium, 2. K/min, 280. C @ 20. min; Tstart: 50. C
CapillaryHP-51090.Du, Clery, et al., 200850. m/0.20 mm/0.33 «mu»m, Helium, 10. K/min, 280. C @ 8.5 min; Tstart: 50. C
CapillaryMDN-51094.van Loon, Linssen, et al., 200560. m/0.25 mm/0.25 «mu»m, He, 40. C @ 4. min, 4. K/min, 270. C @ 5. min
CapillaryMDN-51095.van Loon, Linssen, et al., 200560. m/0.25 mm/0.25 «mu»m, He, 40. C @ 4. min, 4. K/min, 270. C @ 5. min
CapillaryHP-51087.Boylston and Viniyard, 199850. m/0.32 mm/0.52 «mu»m, 35. C @ 15. min, 2. K/min, 250. C @ 45. min
CapillaryDB-11062.Flath, Matsumoto, et al., 198960. m/0.32 mm/0.25 «mu»m, 4. K/min; Tstart: 50. C; Tend: 250. C
CapillaryDB-11063.Flath, Matsumoto, et al., 198960. m/0.32 mm/0.25 «mu»m, 4. K/min; Tstart: 50. C; Tend: 250. C
CapillaryOV-11048.Wu, Liou, et al., 1987Hydrogen, 1. K/min, 200. C @ 35. min; Column length: 50. m; Column diameter: 0.20 mm; Tstart: 50. C

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-51085.Yu and Zhang, 201030. m/0.25 mm/0.25 «mu»m; Program: 40 0C (5 min) 5 0C/min -> 260 0C 15 0C/min -> 280 0C (1 min)
CapillaryHP-5 MS1091.Wan Aida, Ho, et al., 200830. m/0.25 mm/0.25 «mu»m, Helium; Program: 50 0C (2 min) 20 0C/min -> 80 0C (1 min) 20 0C -> 100 0C (1 min) 30 0C/min -> 230 0C (2 min)
CapillaryHP-5MS1091.Ho, Wan Aida, et al., 200730. m/0.25 mm/0.25 «mu»m, He; Program: 50C(2min) => 20C/min => 80C (1min) => 20C/min => 100C(1min) => 30C/min => 230C(3min)
CapillaryDB-51077.Matsui, Guth, et al., 199830. m/0.32 mm/0.25 «mu»m, He; Program: 35C(1min) => 40C/min => 60C (1min) => 6C/min => 230C

Normal alkane RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryHP-Innowax1445.Du, Clery, et al., 200850. m/0.20 mm/0.33 «mu»m, Helium, 10. K/min, 250. C @ 6. min; Tstart: 50. C
CapillaryFFAP1443.Nebesny, Budryn, et al., 200730. m/0.32 mm/0.5 «mu»m, N2, 35. C @ 5. min, 4. K/min, 320. C @ 45. min
CapillaryHP-Wax1492.Sanz, Maeztu, et al., 200260. m/0.25 mm/0.5 «mu»m, He, 40. C @ 6. min, 3. K/min; Tend: 190. C
CapillaryDB-Wax1449.Wong and Bernhard, 1988He, 70. C @ 8. min, 2. K/min; Column length: 30. m; Column diameter: 0.25 mm; Tend: 160. C
CapillaryCarbowax 20M1456.Wu, Liou, et al., 1987Hydrogen, 1. K/min, 200. C @ 35. min; Column length: 50. m; Column diameter: 0.20 mm; Tstart: 50. C

Normal alkane RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-Wax1433.Gonzalez-Rios, Suarez-Quiroz, et al., 200730. m/0.25 mm/0.25 «mu»m, Hydrogen; Program: 44 0C 3 0C/min -> 170 0C 8 0C/min -> 250 0C
CapillaryDB-Wax1463.Gonzalez-Rios, Suarez-Quiroz, et al., 200730. m/0.25 mm/0.25 «mu»m, Hydrogen; Program: not specified

References

Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Ames, Guy, et al., 2001
Ames, J.M.; Guy, R.C.E.; Kipping, G.J., Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking, J. Agric. Food Chem., 2001, 49, 4, 1885-1894, https://doi.org/10.1021/jf0012547 . [all data]

Ames, Guy, et al., 2001, 2
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., 2001, 49, 9, 4315-4323, https://doi.org/10.1021/jf010198m . [all data]

Wu, Wang, et al., 2000
Wu, C.-M.; Wang, Z.; Wu, Q.H., Volatile compounds produced from monosodium glutamate in common food cooking, J. Agric. Food Chem., 2000, 48, 6, 2438-2442, https://doi.org/10.1021/jf9907743 . [all data]

Salter L.J., Mottram D.S., et al., 1988
Salter L.J.; Mottram D.S.; Whitfield, Volatile compounds produces in Maillard reactions involving glycine, ribose and phospholid, J. Sci. Food Agric., 1988, 46, 2, 227-242, https://doi.org/10.1002/jsfa.2740460211 . [all data]

Whitfield, Mottram, et al., 1988
Whitfield, F.B.; Mottram, D.S.; Brock, S.; Puckey, D.J.; Salter, L.J., Effect of Phospholipid on the Formation of Volatile Heterocyclic Compounds in Heated Aqueous Solutions of Amino Acids and Ribose, J. Sci. Food Agric., 1988, 42, 3, 261-272, https://doi.org/10.1002/jsfa.2740420309 . [all data]

Cantergiani, Brevard, et al., 2001
Cantergiani, E.; Brevard, H.; Krebs, Y.; Feria-Morales, A.; Amadò, R.; Yeretzian, C., Characterisation of the aroma of green Mexican coffee and identification of mouldy/earthy defect, Eur. Food Res. Technol., 2001, 212, 6, 648-657, https://doi.org/10.1007/s002170100305 . [all data]

Du, Clery, et al., 2008
Du, Z.; Clery, R.; Hammond, C.J., Volatile organic nitrogen-containing constituents in ambrette seed Abelmoschus moschatus Medik (Malvaceae), J. Agric. Food Chem., 2008, 56, 16, 7388-7392, https://doi.org/10.1021/jf800958d . [all data]

van Loon, Linssen, et al., 2005
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., 2005, 90, 3, 417-425, https://doi.org/10.1016/j.foodchem.2004.05.005 . [all data]

Boylston and Viniyard, 1998
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. [all data]

Flath, Matsumoto, et al., 1989
Flath, R.A.; Matsumoto, K.E.; Binder, R.G.; Cunningham, R.T.; Mon, T.R., Effect of pH on the volatiles of hydrolyzed protein insect baits, J. Agric. Food Chem., 1989, 37, 3, 814-819, https://doi.org/10.1021/jf00087a053 . [all data]

Wu, Liou, et al., 1987
Wu, C.-M.; Liou, S.-E.; Chang, Y.-H.; Chiang, W., Volatile compounds of the wax gourd (Benincasa hispida, Cogn) and a wax gourd beverage, J. Food Sci., 1987, 52, 1, 132-134, https://doi.org/10.1111/j.1365-2621.1987.tb13988.x . [all data]

Yu and Zhang, 2010
Yu, A.-N.; Zhang, A.-D., The effect of pH on the total formation of aroma compounds produced by hearting a model system containing L-ascorbic acid with L-threonine/L-serine, Food Chem., 2010, 119, 1, 214-219, https://doi.org/10.1016/j.foodchem.2009.06.026 . [all data]

Wan Aida, Ho, et al., 2008
Wan Aida, W.M.; Ho, C.W.; Maskat, M.Y.; Osman, H., Relating descriptive sensory analysis to gas chromatography / mass spectrometry of palm sugars using partial least squares regression, ASEAN Food J., 2008, 15, 1, 35-45. [all data]

Ho, Wan Aida, et al., 2007
Ho, C.W.; Wan Aida, W.M.; Maskat, M.Y.; Osman, H., Changes in volatile compounds of palm sap (Arenga pinnata) during the heating process for production of palm sugar, Food Chem., 2007, 102, 4, 1156-1162, https://doi.org/10.1016/j.foodchem.2006.07.004 . [all data]

Matsui, Guth, et al., 1998
Matsui, T.; Guth, H.; Grosch, W., A comparative study of potent odorants in peanut, hazelnut, and pumpkin seed oils on the basis of aroma extract dilution analysis (AEDA) and gas chromatography-olfactometry of headspace samples (GCOH), Lipid - Fett, 1998, 100, 2, 51-56, https://doi.org/10.1002/(SICI)1521-4133(199802)100:2<51::AID-LIPI51>3.0.CO;2-W . [all data]

Nebesny, Budryn, et al., 2007
Nebesny, E.; Budryn, G.; Kula, J.; Majda, T., The effect of roasting method on headspace composition of robusta coffee bean aroma, Eur. Food Res. Technol., 2007, 225, 1, 9-19, https://doi.org/10.1007/s00217-006-0375-0 . [all data]

Sanz, Maeztu, et al., 2002
Sanz, C.; Maeztu, L.; Zapelena, M.J.; Bello, J.; Cid, C., Profiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar, J. Sci. Food Agric., 2002, 82, 8, 840-847, https://doi.org/10.1002/jsfa.1110 . [all data]

Wong and Bernhard, 1988
Wong, J.M.; Bernhard, R.A., Effect of nitrogen source on pyrazine formation, J. Agric. Food Chem., 1988, 36, 1, 123-129, https://doi.org/10.1021/jf00079a032 . [all data]

Gonzalez-Rios, Suarez-Quiroz, et al., 2007
Gonzalez-Rios, O.; Suarez-Quiroz, M.L.; Boulanger, R.; Barel, M.; Guyot, B.; Guiraud, J.-P.; Schorr-Galindo, S., Impact of ecological post-harvest processing of coffee aroma: II Roasted coffee., J. Food Composition Analysis, 2007, 20, 3-4, 297-307, https://doi.org/10.1016/j.jfca.2006.12.004 . [all data]


Notes

Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References