Methyl peroxide
- Formula: CH4O2
- Molecular weight: 48.0413
- IUPAC Standard InChI: InChI=1S/CH4O2/c1-3-2/h2H,1H3
- IUPAC Standard InChIKey: MEUKEBNAABNAEX-UHFFFAOYSA-N
- CAS Registry Number: 3031-73-0
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -131.0 | kJ/mol | Eqk | Khursan and Martem'yanov, 1991 | hf from V. P.Komissarov's report; ALS |
Constant pressure heat capacity of gas
| Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 35.82 | 50. | Dorofeeva O.V., 1997 | p=1 bar.; GT |
| 43.12 | 100. | ||
| 48.61 | 150. | ||
| 53.14 | 200. | ||
| 63. ± 3. | 298.15 | ||
| 62.88 | 300. | ||
| 73.65 | 400. | ||
| 83.78 | 500. | ||
| 92.60 | 600. | ||
| 100.17 | 700. | ||
| 106.70 | 800. | ||
| 112.36 | 900. | ||
| 117.29 | 1000. | ||
| 121.58 | 1100. | ||
| 125.33 | 1200. | ||
| 128.61 | 1300. | ||
| 131.47 | 1400. | ||
| 133.98 | 1500. |
Phase change data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 35. | kJ/mol | V | Blat, Gerber, et al., 1939 | ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 37.7 | 268. | A | Stephenson and Malanowski, 1987 | Based on data from 253. - 313. K. See also Egerton, Emte, et al., 1951.; AC |
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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1567.5 ± 3.2 | kJ/mol | G+TS | Blanksby, Ramond, et al., 2001 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1538.0 ± 2.9 | kJ/mol | IMRE | Blanksby, Ramond, et al., 2001 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas 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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