Methyl peroxide

• Formula: CH₄O₂
• Molecular weight: 48.0413
• IUPAC Standard InChI: InChI=1S/CH4O2/c1-3-2/h2H,1H3 Copy

  
• IUPAC Standard InChIKey: MEUKEBNAABNAEX-UHFFFAOYSA-N Copy
• CAS Registry Number: 3031-73-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • Gas phase ion energetics data
  • References
  • Notes
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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

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

Enthalpy of vaporization

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: John E. Bartmess

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

CH₃O₂^- +  =

By formula: CH₃O₂^- + H⁺ = CH₄O₂

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

Gas phase ion energetics 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: John E. Bartmess

De-protonation reactions

CH₃O₂^- +  =

By formula: CH₃O₂^- + H⁺ = CH₄O₂

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, NIST Free Links, Notes

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

Khursan and Martem'yanov, 1991
Khursan, S.L.; Martem'yanov, V.S., Thermochemistry of the recombination of peroxyl radicals, Russ. J. Phys. Chem. (Engl. Transl.), 1991, 65, 321-325. [all data]

Dorofeeva O.V., 1997
Dorofeeva O.V., Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]

Blat, Gerber, et al., 1939
Blat, E.J.; Gerber, M.J.; Neumann, M.B., The influence of organic peroxides on the cool flame of butane, Acta Physicochim. U.R.S.S., 1939, 10, 273-296. [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]

Egerton, Emte, et al., 1951
Egerton, A.C.; Emte, W.; Minkoff, G.J., Some properties of organic peroxides, Faraday Discuss. Chem. Soc., 1951, 10, 278. [all data]

Blanksby, Ramond, et al., 2001
Blanksby, S.J.; Ramond, T.M.; Davico, G.E.; Nimlos, M.R.; Kato, S.; Bierbaum, V.M.; Lineberger, W.C.; Ellison, Negative-ion photoelectron spectroscopy, gas-phase acidity, and thermochemistry of the peroxyl radicals CH3OO and CH3CH2OO, J. Am. Chem. Soc., 2001, 123, 39, 9585-9596, https://doi.org/10.1021/ja010942j . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, NIST Free Links, References

• Symbols used in this document:
  

  Cp,gas	Constant pressure heat capacity of gas
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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