Methyl isobutyrate

• Formula: C₅H₁₀O₂
• Molecular weight: 102.1317
• IUPAC Standard InChI: InChI=1S/C5H10O2/c1-4(2)5(6)7-3/h4H,1-3H3 Copy

  
• IUPAC Standard InChIKey: BHIWKHZACMWKOJ-UHFFFAOYSA-N Copy
• CAS Registry Number: 547-63-7
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Propanoic acid, 2-methyl-, methyl ester; Isobutyric acid, methyl ester; Methyl 2-methylpropanoate; Methyl 2-methylpropionate; (CH3)2CHC(O)OCH3; Methyl isobutanoate; Methylester kyseliny isomaselne; Methyl methylpropanoate; NSC 126780
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• Information on this page:
  • Phase change data
  • Reaction thermochemistry data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
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Phase change data

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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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Reaction thermochemistry data

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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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  =  + 2

By formula: C₇H₁₆O₃ + H₂O = C₅H₁₀O₂ + 2CH₄O

 +  =

By formula: H₂ + C₅H₈O₂ = C₅H₁₀O₂

 +  =  + 2

By formula: C₇H₁₆O₃ + H₂O = C₅H₁₀O₂ + 2CH₄O

 +  =  + 

By formula: C₅H₁₀O₂ + H₂O = CH₄O + C₄H₈O₂

Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

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Kovats' RI, non-polar column, custom temperature program

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Kovats' RI, polar column, isothermal

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

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

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

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

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Normal alkane RI, non-polar column, isothermal

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Normal alkane RI, non-polar column, temperature ramp

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

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Normal alkane RI, polar column, isothermal

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Normal alkane RI, polar column, temperature ramp

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Normal alkane RI, polar column, custom temperature program

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References

Go To: Top, Phase change data, Reaction thermochemistry data, Gas Chromatography, Notes

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

Dolliver, Gresham, et al., 1938
Dolliver, M.A.; Gresham, T.L.; Kistiakowsky, G.B.; Smith, E.A.; Vaughan, W.E., Heats of Organic Reactions VI. Heats of Hydrogenation of Some Oxygen- Containing Compounds, J. Am. Chem. Soc., 1938, 60, 440. [all data]

Timmermans, 1922
Timmermans, J., Investigation of the Freezing Point of Organic Substances VII, Bull. Soc. Chim. Belg., 1922, 31, 389. [all data]

Young, 1910
Young, S., The Internal Heat of Vaporization constants of thirty pure substances, Sci. Proc. R. Dublin Soc., 1910, 12, 374. [all data]

Young and Thomas, 1893
Young, S.; Thomas, G.L., The vapour pressures, molecular volumes, and critical constants of ten of the lower esters, J. Chem. Soc., 1893, 63, 1191. [all data]

Pawlewski, 1882
Pawlewski, B., The critical temperatures of ester compounds, Ber. Dtsch. Chem. Ges., 1882, 15, 2460-4. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Mathews, 1926
Mathews, J.H., The accurate measurement of heats of vaporization of liquids, J. Am. Chem. Soc., 1926, 48, 562-576. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Wiberg, Martin, et al., 1985
Wiberg, K.B.; Martin, E.J.; Squires, R.R., Thermochemical studies of carbonyl compounds. 3. Enthalpies of hydrolysis of ortho esters, J. Org. Chem., 1985, 50, 4717-4720. [all data]

Guthrie and Cullimore, 1980
Guthrie, J.P.; Cullimore, P.A., Effect of the acyl substituent on the equilibrium constant for hydration of esters, Can. J. Chem., 1980, 58, 1281-1294. [all data]

Vilcu and Perisanu, 1980
Vilcu, R.; Perisanu, S., The ideal gas state enthalpies of formation of some monomers, Rev. Roum. Chim., 1980, 25, 619-624. [all data]

Dolliver, Gresham, et al., 1938, 2
Dolliver, M.A.; Gresham, T.L.; Kistiakowsky, G.B.; Smith, E.A.; Vaughan, W.E., Heats of organic reactions. VI. Heats of hydrogenation of some oxygen-containing compounds, J. Am. Chem. Soc., 1938, 60, 440-450. [all data]

Wiberg, 1980
Wiberg, K.B., Energies of organic compounds, Rept. DOE-E(11-1)4060 Prepared for US Dept. of Energy by Yale Univ., New Haven, CT. Avail. NTIS, 1980, 1-24. [all data]

Hu, Lu, et al., 2006
Hu, X.-F.; Lu, C.-H.; Yin, C.-S., Modeling Gas Chromatographic Retention Indices of Oxygen-containing Compounds by Novel Atom-type Topological Indices, Chinese Journal of Chemical Physics, 2006, 19, 3, 243-247, https://doi.org/10.1360/cjcp2006.19(3).243.5 . [all data]

Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]

Ashes and Haken, 1974
Ashes, J.R.; Haken, J.K., Gas chromatography of homologous esters. VI. Structure-retention increments of aliphatic esters, J. Chromatogr., 1974, 101, 1, 103-123, https://doi.org/10.1016/S0021-9673(01)94737-5 . [all data]

Ashes and Haken, 1971
Ashes, J.R.; Haken, J.K., Gas chromatography of homologous esters. Part V. Retention of aliphatic esters on non-polar, donar and acceptor stationary phases, J. Chromatogr., 1971, 60, 33-44, https://doi.org/10.1016/S0021-9673(00)95527-4 . [all data]

Mira and Sanchez, 1970
Mira, J.M.; Sanchez, L.G., Polarity of the Gas Chromatographic Stationary Phases and Retention Indices of Aliphatic Esters, Ketones and Alcohols, Anal. Chim. Acta., 1970, 50, 2, 315-321, https://doi.org/10.1016/0003-2670(70)80071-X . [all data]

Germaine and Haken, 1969
Germaine, R.W.; Haken, J.K., Gas chromatography of homologous esters. Part 1. Simple aliphatic esters, J. Chromatogr., 1969, 43, 33-42, https://doi.org/10.1016/S0021-9673(00)99162-3 . [all data]

Chretien and Dubois, 1978
Chretien, J.R.; Dubois, J-E., Topological Analysis: A Technique for the Physico-Chemical Exploitation of Retention Data in Gas-Liquid Chromatography, J. Chromatogr., 1978, 158, 43-56, https://doi.org/10.1016/S0021-9673(00)89954-9 . [all data]

Chastrette, Heintz, et al., 1974
Chastrette, M.; Heintz, M.; Druilhe, A.; Lefort, D., Analyse chromatographique d'esters aliphatiques saturés. Relations rétention-structure et prévision de la rétention, Bull. Soc. Chim. Fr., 1974, 9/10,Pt.1, 1852-1856. [all data]

Steinhaus and Schieberle, 2007
Steinhaus, P.; Schieberle, P., Characterization of the key aroma compounds in soy sauce using approaches of molecular sensory science, J. Agric. Food Chem., 2007, 55, 15, 6262-6269, https://doi.org/10.1021/jf0709092 . [all data]

Hierro, de la Hoz, et al., 2004
Hierro, E.; de la Hoz, L.; Ordóñez, J.A., Headspace volatile compounds from salted and occasionally smoked dried meats (cecinas) as affected by animal species, Food Chem., 2004, 85, 4, 649-657, https://doi.org/10.1016/j.foodchem.2003.07.001 . [all data]

Fuhrmann and Grosch, 2002
Fuhrmann, E.; Grosch, W., Character impact odorants of the apple cultivars Elstar and Cox Orange, Nahrung/Food, 2002, 46, 3, 187-193, https://doi.org/10.1002/1521-3803(20020501)46:3<187::AID-FOOD187>3.0.CO;2-5 . [all data]

Beaulieu and Grimm, 2001
Beaulieu, J.C.; Grimm, C.C., Identification of volatile compounds in cantaloupe at various developmental stages using solid phase microextraction, J. Agric. Food Chem., 2001, 49, 3, 1345-1352, https://doi.org/10.1021/jf0005768 . [all data]

Duckham, Dodson, et al., 2001
Duckham, S.C.; Dodson, A.T.; Bakker, J.; Ames, J.M., Volatile flavour components of baked potato flesh. A comparison of eleven potato cultivars, Nahrung/Food, 2001, 45, 5, 317-323, https://doi.org/10.1002/1521-3803(20011001)45:5<317::AID-FOOD317>3.0.CO;2-4 . [all data]

Bauchot, Mottram, et al., 1998
Bauchot, A.D.; Mottram, D.S.; Dodson, A.T.; John, P., Effect of aminocyclopropane-1-carboxylic acid oxidase antisense gene on the formation of volatile esters in cantaloupe charentais melon (Cv. Védrandais), J. Agric. Food Chem., 1998, 46, 11, 4787-4792, https://doi.org/10.1021/jf980692z . [all data]

Kourkoutas, Elmore, et al., 2006
Kourkoutas, D.; Elmore, J.S.; Mottram, D.S., Comparison of the volatile compositions and flavour properties of cantaloupe, Galia and honeydew muskmelons, Food Chem., 2006, 97, 1, 95-102, https://doi.org/10.1016/j.foodchem.2005.03.026 . [all data]

Varming, Andersen, et al., 2004
Varming, C.; Andersen, M.L.; Poll, L., Influence of thermal treatment on black currant (Ribes nigrum L.) juice aroma, J. Agric. Food Chem., 2004, 52, 25, 7628-7636, https://doi.org/10.1021/jf049435m . [all data]

Varming, Petersen, et al., 2004
Varming, C.; Petersen, M.A.; Poll, L., Comparison of isolation methods for the determination of important aroma compounds in black currant (Ribes nigrum L.) juice, using nasal impact frequency profiling, J. Agric. Food Chem., 2004, 52, 6, 1647-1652, https://doi.org/10.1021/jf035133t . [all data]

Shiratsuchi, Shimoda, et al., 1993
Shiratsuchi, H.; Shimoda, M.; Minegishi, Y.; Osajima, Y., Isolation and identification of volatile flavor compounds in nonfermented coarse-cut sausage. Flavor as a quality factor of nonfermented sausage. 1, J. Agric. Food Chem., 1993, 41, 4, 647-652, https://doi.org/10.1021/jf00028a027 . [all data]

van den Dool and Kratz, 1963
van den Dool, H.; Kratz, P. Dec., A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography, J. Chromatogr., 1963, 11, 463-471, https://doi.org/10.1016/S0021-9673(01)80947-X . [all data]

Bianchi, Careri, et al., 2007
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., 2007, 39, 4, 563-572, https://doi.org/10.1002/jssc.200600393 . [all data]

Blazso, Ujszaszi, et al., 1980
Blazso, M.; Ujszaszi, K.; Jakab, E., Isomeric structure of styrene-acrylonitrile and styrene-methylacrylate copolymer pyrolysis products, Chromatographia, 1980, 13, 3, 151-156, https://doi.org/10.1007/BF02259304 . [all data]

Yabumoto, Jennings, et al., 1977
Yabumoto, K.; Jennings, W.G.; Yamaguchi, M., Gas chromatographic retention as identification criteria, Anal. Biochem., 1977, 78, 1, 244-251, https://doi.org/10.1016/0003-2697(77)90029-X . [all data]

Kumazawa, Itobe, et al., 2008
Kumazawa, K.; Itobe, T.; Nishimura, O.; Hamaguchi, T., A new approach to estimate the in-mouth release characteristics of odorants in chewing gum, Food Science and Technology Research, 2008, 14, 3, 269-276, https://doi.org/10.3136/fstr.14.269 . [all data]

Leffingwell and Alford, 2005
Leffingwell, J.C.; Alford, E.D., Volatile constituents of Perique tobacco, Electron. J. Environ. Agric. Food Chem., 2005, 4, 2, 899-915. [all data]

Tokitomo, Steihaus, et al., 2005
Tokitomo, Y.; Steihaus, M.; Buttner, A.; Schieberle, P., Odor-Active Constituents in Fresh Pineapple (ananas comosus [L.] Merr.) by Quamtitative and Sensory Evaluations, Biosci. Biotechnol, Biochem,, 2005, 69, 7, 1323-1330, https://doi.org/10.1271/bbb.69.1323 . [all data]

Larsen and Frisvad, 1995
Larsen, T.O.; Frisvad, J.C., Characterization of volatile metabolites from 47 Penicillium taxa, Mycol. Res., 1995, 99, 10, 1153-1166, https://doi.org/10.1016/S0953-7562(09)80271-2 . [all data]

Anker, Jurs, et al., 1990
Anker, L.S.; Jurs, P.C.; Edwards, P.A., Quantitative structure-retention relationship studies of odor-active aliphatic compounds with oxygen-containing functional groups, Anal. Chem., 1990, 62, 24, 2676-2684, https://doi.org/10.1021/ac00223a006 . [all data]

Dirinck, de Pooter, et al., 1981
Dirinck, P.J.; de Pooter, H.L.; Willaert, G.A.; Schamp, N.M., Flavor quality of cultivated strawberries: the role of the sulfur compounds, J. Agric. Food Chem., 1981, 29, 2, 316-321, https://doi.org/10.1021/jf00104a024 . [all data]

Rotsatschakul, Visesanguan, et al., 2009
Rotsatschakul, P.; Visesanguan, W.; Smitinont, T.; Chaiseri, S., Changes in volatile compounds during fermentation of nham (Thai fermented sausage), Int. Food Res. J., 2009, 16, 391-414. [all data]

Beaulieu and Lancaster, 2007
Beaulieu, J.C.; Lancaster, V.A., Correlating Volatile Compounds, Sensory Attributes, and Quality Parameters in Stored Fresh-Cut Cantaloupe, J. Agric. Food Chem., 2007, 55, 23, 9503-9513, https://doi.org/10.1021/jf070282n . [all data]

Liu, Liang, et al., 2007
Liu, F.; Liang, Y.; Cao, C.; Zhou, N., QSPR study of GC retention indices for saturated esters on seven stationary phases based on novel topological indices, Talanta, 2007, 72, 4, 1307-1315, https://doi.org/10.1016/j.talanta.2007.01.038 . [all data]

Vinogradov, 2004
Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]

Jordán, Margaría, et al., 2002
Jordán, M.J.; Margaría, C.A.; Shaw, P.E.; Goodner, K.L., Aroma active components in aqueous kiwi fruit essence and kiwi fruit puree by GC-MS and multidimensional GC/GC-O, J. Agric. Food Chem., 2002, 50, 19, 5386-5390, https://doi.org/10.1021/jf020297f . [all data]

Estrada and Gutierrez, 1999
Estrada, E.; Gutierrez, Y., Modeling chromatographic parameters by a novel graph theoretical sub-structural approach, J. Chromatogr. A, 1999, 858, 2, 187-199, https://doi.org/10.1016/S0021-9673(99)00808-0 . [all data]

Tanaka, Yamauchi, et al., 2003
Tanaka, T.; Yamauchi, T.; Katsumata, R.; Kiuchi, K., Comparison of volatile components in commercial Itohiki-Natto by solid phase microextraction and gas chromatography, Nippon Shokuhin Kagaku Kogaku Kaishi, 2003, 50, 6, 278-285, https://doi.org/10.3136/nskkk.50.278 . [all data]

Hayata, Sakamoto, et al., 2002
Hayata, Y.; Sakamoto, T.; Kozuka, H.; Sakamoto, K.; Osajima, Y., Analysis of aromatic volatile compounds in 'Miyabi' melon (Cucumis melo L.) using the Porapak Q column, J. Jpn. Soc. Hortic. Sci., 2002, 71, 4, 517-525, https://doi.org/10.2503/jjshs.71.517 . [all data]

Shimoda, Shiratsuchi, et al., 1993
Shimoda, M.; Shiratsuchi, H.; Minegishi, Y.; Osajima, Y., Flavor deterioration of nonfermented coarse-cut sausage during storage. Flavor as a factor of quality for nonfermented sausage. 2, J. Agric. Food Chem., 1993, 41, 6, 946-950, https://doi.org/10.1021/jf00030a021 . [all data]

Takeoka and Butter, 1989
Takeoka, G.; Butter, R.G., Volatile constituents of pineapple (Ananas Comosus [L.] Merr.) in Flavor Chemistry. Trends and Developments, Teranishi,R.; Buttery,R.G.; Shahidi,F., ed(s)., American Chemical Society, Washington, DC, 1989, 223-237. [all data]

Waggott and Davies, 1984
Waggott, A.; Davies, I.W., Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]

Notes

Go To: Top, Phase change data, Reaction thermochemistry data, Gas Chromatography, References

• Symbols used in this document:
  

  Pc	Critical pressure
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ρc	Critical density

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