Methane
- Formula: CH4
- Molecular weight: 16.0425
- IUPAC Standard InChI: InChI=1S/CH4/h1H4
- IUPAC Standard InChIKey: VNWKTOKETHGBQD-UHFFFAOYSA-N
- 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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Critical density
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| ρc (mol/l) | Reference | Comment |
|---|---|---|
| 10.14 ± 0.003 | Ambrose and Tsonopoulos, 1995 | |
| 10.139 | Friend, Ely, et al., 1989 | Uncertainty assigned by TRC = 0.010 mol/l; TRC |
| 10.1 | Teja, Lee, et al., 1989 | TRC |
| 10.139 | Kleinrahm and Wagner, 1986 | Uncertainty assigned by TRC = 0.002 mol/l; TRC |
| 10.19 | Sychev, Vasserman, et al., 1979 | Uncertainty assigned by TRC = 0.2 mol/l; TRC |
| 10.109 | Angus, Armstrong, et al., 1978 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
| 9.998 | Goodwin, 1974 | TRC |
| 10.058 | Jansoone, Gielen, et al., 1970 | Uncertainty assigned by TRC = 0.06 mol/l; by extrapolation of exp. isochore to Tc; TRC |
| 10.13 | Vennix, Leland, et al., 1970 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
| 10.3 | Ricci and Scafe, 1969 | Uncertainty assigned by TRC = 0.2 mol/l; TRC |
| 10.14 | Grigor and Steele, 1968 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
| 10.13 | Bloomer and Parent, 1952 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
| 10.12 | Bennewitz and Andreewa, 1929 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
| 9.97 | Keyes, Taylor, et al., 1922 | Uncertainty assigned by TRC = 0.2 mol/l; TRC |
| 10.12 | Cardoso, 1915 | Uncertainty assigned by TRC = 0.06 mol/l; by extrapolating rectilinear diameters to Tc; TRC |
| 10.12 | Cardoso, 1915, 2 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
| 9.04 | Sarrau, 1882 | Uncertainty assigned by TRC = 1.2 mol/l; TRC; Data excluded from overall average |
References
Go To: Top, Critical density, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ambrose and Tsonopoulos, 1995
Ambrose, D.; Tsonopoulos, C.,
Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkenes,
J. Chem. Eng. Data, 1995, 40, 531-546. [all data]
Friend, Ely, et al., 1989
Friend, D.G.; Ely, J.F.; Ingham, H.,
Thermophysical Properties of Methane,
J. Phys. Chem. Ref. Data, 1989, 18, 2, 583-638, https://doi.org/10.1063/1.555828
. [all data]
Teja, Lee, et al., 1989
Teja, A.S.; Lee, R.J.; Rosenthal, D.J.; Anselme, M.J.,
Correlation of the Critical Properties of Alkanes and Alkanols
in 5th IUPAC Conference on Alkanes and AlkanolsGradisca, 1989. [all data]
Kleinrahm and Wagner, 1986
Kleinrahm, R.; Wagner, W.,
Measurement and correlation of the equilibrium liquid and vapour densities & the vapour pres. along the coexistence curve of methane,
J. Chem. Thermodyn., 1986, 18, 739-60. [all data]
Sychev, Vasserman, et al., 1979
Sychev, V.V.; Vasserman, A.A.; Zagoruchenko, V.A.; Kozlov, A.D.; Spiridonov, G.A.; Tsymarny, V.A.,
Thermodynamic Properties of Methane, 1979. [all data]
Angus, Armstrong, et al., 1978
Angus, S.; Armstrong, B.; de Reuck, K.M.,
International Thermodynamic Tables of the Fluid State - 5 Methane, Pergamon, Oxford, 1978. [all data]
Goodwin, 1974
Goodwin, R.D.,
The Thermodynamic Properties of Methane, from 90 to 500K at Pressures to 700 Bar, NBS Tech. Note (U. S.) No. 653, 1974. [all data]
Jansoone, Gielen, et al., 1970
Jansoone, V.; Gielen, H.; De Boelpaep, J.; Verbeke, O.B.,
The Pressure-temperature-volume Relationship of Methane Near the Critical Point,
Physica (Amsterdam), 1970, 46, 213-21. [all data]
Vennix, Leland, et al., 1970
Vennix, A.J.; Leland, T.W.; Kobayashi, R.,
Low-temperature volumetric properties of methane,
J. Chem. Eng. Data, 1970, 15, 238-243. [all data]
Ricci and Scafe, 1969
Ricci, F.P.; Scafe, E.,
Orthobaric Density of CH4 in the Critical Region,
Phys. Lett. A, 1969, 29, 650-1. [all data]
Grigor and Steele, 1968
Grigor, A.F.; Steele, W.A.,
Physical properties of fluid ch(4) and cd(4): experimental,
J. Chem. Phys., 1968, 48, 1032-1037. [all data]
Bloomer and Parent, 1952
Bloomer, O.T.; Parent, J.D.,
Physical-chemical properties of methane + nitrogen mixtures,
Inst. Gas Technol., Chicago, Res. Bull., 1952, No. 17. [all data]
Bennewitz and Andreewa, 1929
Bennewitz, K.; Andreewa, N.,
Investigations in the Critical Region III. Energy Measurements by Means of the Joule-Effect,
Z. Phys. Chem., Abt. A, 1929, 142, 37. [all data]
Keyes, Taylor, et al., 1922
Keyes, F.G.; Taylor, R.S.; Smith, L.B.,
The thermodynamic properties of methane,
J. Math. Phys. (Cambridge, Mass.), 1922, 1, 211-42. [all data]
Cardoso, 1915
Cardoso, E.,
Study of the Critical Point of Several Difficultly LIquifiable Gases: Nitrogen, Carbon Monoxide, Oxygen and Methane,
J. Chim. Phys. Phys.-Chim. Biol., 1915, 13, 312. [all data]
Cardoso, 1915, 2
Cardoso, E.,
Experimental determination of the critical constants of oxygen, nitrogen, carbon monoxide and methane.,
Arch. Sci. Phys. Nat., 1915, 39, 400. [all data]
Sarrau, 1882
Sarrau, E.,
C. R. Hebd. Seances Acad. Sci., 1882, 94, 718. [all data]
Notes
Go To: Top, Critical density, References
- Symbols used in this document:
ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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