Methane

• Formula: CH₄
• Molecular weight: 16.0425
• IUPAC Standard InChI: InChI=1S/CH4/h1H4 Copy

  
• IUPAC Standard InChIKey: VNWKTOKETHGBQD-UHFFFAOYSA-N Copy
• CAS Registry Number: 74-82-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Marsh gas; Methyl hydride; CH4; Fire Damp; R 50; Biogas; R 50 (refrigerant)
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• Information on this page:
  • Reaction thermochemistry data (reactions 101 to 112)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
  • Fluid Properties
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
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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 as indicated in comments:
MS - José A. Martinho Simões
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.

Reactions 101 to 112

C₁₁H₁₃ClTi (cr) + ( • 4.40) (solution) =  (cr) +  (g)

By formula: C₁₁H₁₃ClTi (cr) + (HCl • 4.40H₂O) (solution) = C₁₀H₁₀Cl₂Ti (cr) + CH₄ (g)

 + 2 = 2 + 

By formula: H₂ + 2CH₃Br = 2CH₄ + Br₂

 +  =  + 

By formula: H₂ + CH₃Br = HBr + CH₄

 +  =  + 

By formula: H₂ + CH₃Cl = CH₄ + HCl

 + 4 =  + 4

By formula: CF₄ + 4HF = CH₄ + 4F₂

 +  =  + 

By formula: CH₄ + Br₂ = HBr + CH₃Br

C₅H₁₅Ta (l) + 2.5 (l) = 0.5O₅Ta₂ (cr) + 5 (g)

By formula: C₅H₁₅Ta (l) + 2.5H₂O (l) = 0.5O₅Ta₂ (cr) + 5CH₄ (g)

( • ) +  = ( • 2)

By formula: (Mg⁺ • CH₄) + CH₄ = (Mg⁺ • 2CH₄)

 +  = 2

By formula: CH₄ + CH₂I₂ = 2CH₃I

C₆H₄CrO₅ (g) = C₅CrO₅ (g) +  (g)

By formula: C₆H₄CrO₅ (g) = C₅CrO₅ (g) + CH₄ (g)

 +  = ( • )

By formula: Mg⁺ + CH₄ = (Mg⁺ • CH₄)

 (g) =  (g) +  (g)

By formula: CH₃Li (g) = Li (g) + CH₄ (g)

References

Go To: Top, Reaction thermochemistry data, Notes

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

Calhorda, Dias, et al., 1987
Calhorda, M.J.; Dias, A.R.; Minas da Piedade M.E.; Salema, M.S.; Martinho Simões J.A., Organometallics, 1987, 6, 734. [all data]

Adams, Carson, et al., 1966
Adams, G.P.; Carson, A.S.; Laye, P.G., Thermochemistry of reductions caused by lithium aluminium hydride. Part 4.-Heat of formation of methyl bromide, Trans. Faraday Soc., 1966, 62, 1447-1449. [all data]

Fowell, Lacher, et al., 1965
Fowell, P.; Lacher, J.R.; Park, J.D., Reaction heats of organic compounds. Part 3.-Heats of hydrogenation of methyl bromide and ethyl bromide, Trans. Faraday Soc., 1965, 61, 1324-1327. [all data]

Lacher, Emery, et al., 1956
Lacher, J.R.; Emery, E.; Bohmfalk, E.; Park, J.D., Reaction heats of organic compounds. IV. A high temperature calorimeter and the hydrogenation of methyl ethyl and vinyl chlorides, J. Phys. Chem., 1956, 60, 492-495. [all data]

Jessup, McCoskey, et al., 1955
Jessup, R.S.; McCoskey, R.E.; Nelson, R.A., The heat of formation of tetrafluoromethane, J. Am. Chem. Soc., 1955, 77, 244-245. [all data]

Ferguson, Okafo, et al., 1973
Ferguson, K.C.; Okafo, E.N.; Whittle, E., Bond dissociation energies from equilibrium studies Part 4.-The equilibrium Br₂ + CH₄ = HBr + CH₃Br. Determination of D(CH₃-Br) and ΔH_f°(CH₃Br,g), J. Chem. Soc. Faraday Trans. 1, 1973, 69, 295-301. [all data]

Adedeji, Connor J.A., et al., 1976
Adedeji, F.A.; Connor J.A.; Skinner, H.A.; Galyer, L.; Wilkinson, G., J. Chem. Soc., Chem. Commun., 1976, 159.. [all data]

Andersen, Muntean, et al., 2000
Andersen, A.; Muntean, F.; Walter, D.; Rue, C.; Armentrout, P.B., Collision-Induced Dissociation and Theoretical Studies of Mg+ Complexes with CO, CO2, NH3, CH4, CH3OH, and C6H6, J. Phys. Chem. A, 2000, 104, 4, 692, https://doi.org/10.1021/jp993031t . [all data]

Furuyama, Golden, et al., 1968
Furuyama, S.; Golden, D.M.; Benson, S.W., The thermochemistry of the gas-phase equilibrium 2CH₃I = CH₄ + CH₂i₂. The heat of formation of CH₂I₂, J. Phys. Chem., 1968, 72, 4713-4715. [all data]

Wells, House, et al., 1994
Wells, J.R.; House, P.G.; Weitz, E., J. Phys. Chem., 1994, 98, 8343. [all data]

Smith and Patrick, 1983
Smith, G.P.; Patrick, R., Int. J. Chem. Kinet., 1983, 15, 167. [all data]

Notes

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• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

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