Benzoyl Peroxide

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Gas phase 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

Quantity Value Units Method Reference Comment
Δfgas-64.9 ± 1.3kcal/molCcbCarson, Laye, et al., 1975 
Δfgas-67.3 ± 1.5kcal/molCcbKiparisova and Rabinovich, 1971Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -67.0 ± 2.5 kcal/mol

Condensed phase 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

Quantity Value Units Method Reference Comment
Δfsolid-88.3 ± 1.1kcal/molCcbCarson, Laye, et al., 1975 
Δfsolid-88.3 ± 2.0kcal/molCcbKiparisova and Rabinovich, 1971Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -88.0 ± 2.0 kcal/mol
Δfsolid-93.7 ± 1.5kcal/molCcbBreitenbach and Derkosch, 1951Reanalyzed by Cox and Pilcher, 1970, Original value = -93.5 kcal/mol
Quantity Value Units Method Reference Comment
Δcsolid-1570.0 ± 1.1kcal/molCcbCarson, Laye, et al., 1975Corresponding Δfsolid = -88.33 kcal/mol (simple calculation by NIST; no Washburn corrections)
Δcsolid-1570.0 ± 2.0kcal/molCcbKiparisova and Rabinovich, 1971Corresponding Δfsolid = -88.3 kcal/mol (simple calculation by NIST; no Washburn corrections)
Δcsolid-1564.6 ± 1.5kcal/molCcbBreitenbach and Derkosch, 1951Reanalyzed by Cox and Pilcher, 1970, Original value = -1564.5 kcal/mol; Corresponding Δfsolid = -93.69 kcal/mol (simple calculation by NIST; no Washburn corrections)

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub23.4 ± 0.6kcal/molVCarson, Laye, et al., 1975ALS
Δsub23.4 ± 0.60kcal/molMECarson, Laye, et al., 1975Based on data from 310. to 340. K.; AC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
21.4 ± 1.0303.MEKiparisova and Rabinovich, 1971, 2Based on data from 293. to 313. K. See also Pedley and Rylance, 1977.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
5.399378.Fine and Gray, 1967Large uncertainty in reported value. Compound may undergo some decomposition upon melting.; AC

IR Spectrum

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Data compiled by: Coblentz Society, Inc.


References

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

Carson, Laye, et al., 1975
Carson, A.S.; Laye, P.G.; Morris, H., The enthalpy of formation of dibenzoyl peroxide, J. Chem. Thermodyn., 1975, 7, 993-996. [all data]

Kiparisova and Rabinovich, 1971
Kiparisova, E.G.; Rabinovich, I.B., Thermochemistry of a series of acyl peroxides, Dokl. Phys. Chem. (Engl. Transl.), 1971, 199, 675-677, In original 1075. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Breitenbach and Derkosch, 1951
Breitenbach, J.W.; Derkosch, J., Verbrennungswarmen von peroxyden und verwandten verbindungen sowie von polystrolen, Monatsh. Chem., 1951, 82, 177-179. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Kiparisova and Rabinovich, 1971, 2
Kiparisova, E.G.; Rabinovich, I.B., Dokl. Akad. Nauk SSSR, 1971, 199, 5, 1075. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., , Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brighton, 1977. [all data]

Fine and Gray, 1967
Fine, D.H.; Gray, P., Explosive decomposition of solid benzoyl peroxide, Combust. Flame, 1967, 11, 71-78. [all data]


Notes

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