Methyl Peroxide - The NIST WebBook

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 View 3d structure (requires JavaScript / HTML 5)
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• Information on this page:
  • Gas phase thermochemistry data
  • References
  • Notes
• Other data available:
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
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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

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.

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.

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Dorofeeva O.V., 1997 Dorofeeva O.V., Unpublished results.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]

Notes

Go To: Top, Gas phase 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

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