Acetic anhydride

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Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, References, Notes

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
RCD - Robert C. Dunbar

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

Acetic anhydride + Water = 2Acetic acid

By formula: C4H6O3 + H2O = 2C2H4O2

Quantity Value Units Method Reference Comment
Δr-13.53 ± 0.96kcal/molCmBecker and Maelicke, 1967liquid phase; ALS
Δr-14.00 ± 0.09kcal/molCmWadso, 1962liquid phase; ALS
Δr-14.0 ± 0.1kcal/molCmConn, Kistiakowsky, et al., 1942liquid phase; Heat of hydrolysis at 303 K; ALS

Acetic anhydride + 1-Butanamine = Acetamide, N-butyl- + Acetic acid

By formula: C4H6O3 + C4H11N = C6H13NO + C2H4O2

Quantity Value Units Method Reference Comment
Δr-27.06 ± 0.11kcal/molCmWadso, 1962liquid phase; ALS
Δr-39.13 ± 0.06kcal/molCmWadso, 1958liquid phase; Heat of aminolysis; ALS

Sodium ion (1+) + Acetic anhydride = (Sodium ion (1+) • Acetic anhydride)

By formula: Na+ + C4H6O3 = (Na+ • C4H6O3)

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
31.1298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

Acetic anhydride + 2Acetic acid, methoxy- = Acetic acid, methoxy-, anhydride + 2Acetic acid

By formula: C4H6O3 + 2C3H6O3 = C6H10O5 + 2C2H4O2

Quantity Value Units Method Reference Comment
Δr0.0kcal/molEqkUtkin, Bogel'fer, et al., 1991liquid phase; NMR; ALS

2Acetic acid = Acetic anhydride + Water

By formula: 2C2H4O2 = C4H6O3 + H2O

Quantity Value Units Method Reference Comment
Δr15.22 ± 0.28kcal/molEqkKnopp, Linnell, et al., 1962liquid phase; ALS

Acetic anhydride + Aniline = Acetamide, N-phenyl- + Acetic acid

By formula: C4H6O3 + C6H7N = C8H9NO + C2H4O2

Quantity Value Units Method Reference Comment
Δr-24.11 ± 0.06kcal/molCmWadso, 1962liquid phase; ALS

Acetyl nitrate + Acetic acid = Acetic anhydride + Nitric acid

By formula: C2H3NO4 + C2H4O2 = C4H6O3 + HNO3

Quantity Value Units Method Reference Comment
Δr3.99kcal/molCmTsvetkov, Shmakov, et al., 1989liquid phase; ALS

Acetic anhydride + Cytidine = Cytidine, N-acetyl- + Acetic acid

By formula: C4H6O3 + C9H13N3O5 = C11H15N3O6 + C2H4O2

Quantity Value Units Method Reference Comment
Δr-10.5kcal/molKinShatynski and Hanesian, 1993solid phase; ALS

Ketene + Acetic acid = Acetic anhydride

By formula: C2H2O + C2H4O2 = C4H6O3

Quantity Value Units Method Reference Comment
Δr-20.9 ± 0.53kcal/molEqkBlake, Davies, et al., 1971gas phase; ALS

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Ion clustering data, References, Notes

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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C4H6O3+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
~10.0PEBock, Hirabayashi, et al., 1981LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H3O+10.14CH3COOPITraeger, McLouglin, et al., 1982LBLHLM
C2H3O+10.19 ± 0.02?PIShigorin, Filyugina, et al., 1967RDSH
C2H4O2+9.65 ± 0.02CH2=CO?PIShigorin, Filyugina, et al., 1967RDSH
C3H3O3+10.14 ± 0.02CH3PIShigorin, Filyugina, et al., 1967RDSH

Ion clustering data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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: Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Sodium ion (1+) + Acetic anhydride = (Sodium ion (1+) • Acetic anhydride)

By formula: Na+ + C4H6O3 = (Na+ • C4H6O3)

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
31.1298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Notes

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

Becker and Maelicke, 1967
Becker, F.; Maelicke, A., Thermokinetische Messungen nach dem Prinzip der Wärmefluβkalorimetrie, Z. Phys. Chem. (Neue Folge), 1967, 55, 280-295. [all data]

Wadso, 1962
Wadso, I., Heats of aminolysis and hydrolysis of some N-acetyl compounds and of acetic anhydride, Acta Chem. Scand., 1962, 16, 471-478. [all data]

Conn, Kistiakowsky, et al., 1942
Conn, J.B.; Kistiakowsky, G.B.; Roberts, R.M.; Smith, E.A., Heats of organic reactions. XIII. Heats of hydrolysis of some acid anhydrides, J. Am. Chem. Soc., 1942, 64, 1747-17. [all data]

Wadso, 1958
Wadso, I., The heats of aminolysis of n-butyl thiolacetate and acetic anhydride, Acta Chem. Scand., 1958, 12, 635-640. [all data]

McMahon and Ohanessian, 2000
McMahon, T.B.; Ohanessian, G., An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions, Chem. Eur. J., 2000, 6, 16, 2931, https://doi.org/10.1002/1521-3765(20000818)6:16<2931::AID-CHEM2931>3.0.CO;2-7 . [all data]

Utkin, Bogel'fer, et al., 1991
Utkin, A.Yu.; Bogel'fer, L.Ya.; Chimishkyan, A.L., Reversible reactions in the acidolysis of methyoxyacetic acid by acetic anhydride, Russ. J. Phys. Chem. (Engl. Transl.), 1991, 65, 1049-1059, In original 1974. [all data]

Knopp, Linnell, et al., 1962
Knopp, J.A.; Linnell, W.S.; Child, W.C., Jr., The thermodynamics of the thermal decomposition of acetic acid in the liquid phase, J. Phys. Chem., 1962, 66, 1513-1516. [all data]

Tsvetkov, Shmakov, et al., 1989
Tsvetkov, V.G.; Shmakov, V.A.; Sopin, V.F.; Ivanov, A.V.; Ikonnikov, A.A.; Marchenko, G.N., Enthalpies of reaction of nitric acid with acetic and trifluoroacetic anhydrides, J. Gen. Chem. USSR, 1989, 59, 1220-1222. [all data]

Shatynski and Hanesian, 1993
Shatynski, J.J.; Hanesian, D., Adiabatic kinetic studies of the cytidine/acetic anhydride reaction by utilizing temperature versus time data, Ind. Eng. Chem. Res., 1993, 32, 594-599. [all data]

Blake, Davies, et al., 1971
Blake, P.G.; Davies, H.H.; Speis, A., Reactions of keten. Part II. The thermodynamics of the gas-phase equilibrium: acetic acid + keten = acetic anhydride, J. Chem. Soc. B, 1971, 2050-2052. [all data]

Bock, Hirabayashi, et al., 1981
Bock, H.; Hirabayashi, T.; Mohmand, S., Thermische erzeugung von alkyl- und halogenketenen, Chem. Ber., 1981, 114, 2595. [all data]

Traeger, McLouglin, et al., 1982
Traeger, J.C.; McLouglin, R.G.; Nicholson, A.J.C., Heat of formation for acetyl cation in the gas phase, J. Am. Chem. Soc., 1982, 104, 5318. [all data]

Shigorin, Filyugina, et al., 1967
Shigorin, D.N.; Filyugina, A.D.; Potapov, V.K., Role of intramolecular hydrogen bonding in the ionisation and dissociation of compounds, Zh. Fiz. Khim., 1967, 41, 2336, In original 1255. [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References