Thermodynamic properties of methane

Temperature K Pressure MPa Density mol/dm3 Volume dm3/mol Int. energy kj/mol Enthalpy kj/mol Entropy kJ/(mol K) C, kJ/(mol K) Q kJ/(mol-K) Sound speed m/s Joule-Thomson K/MPa Therm, cond. mW/(m K) Viscosity pPa-s 

The uncertainties in density are 0.03% for pressures below 12 MPa and temperatures below 350 K and up to 0.07% for pressures less than 50 MPa. For the speed of sound, the uncertainty ranges from 0.03% (in the vapor phase) to 0.3% depending on temperature and pressure. Heat capacities may be generally calculated within an uncertainty of 1%. The uncertainty in viscosity is 2%, except in the critical region which is 5%. The uncertainty in thermal conductivity of the dilute gas between 130 and 625 K is 2.5%. For temperatures below 130 K, the uncertainty is less than 10%. Excluding the dilute gas, the uncertainty is 2% between 110 and 725 K at pressures up to 70 MPa, except near the critical point which has an uncertainty of 5% or greater. For the vapor at lower temperatures and the dense liquid near the triple point, an uncertainty of 10% is possible. 

Temperature Pressure Density Volume Int. energy Enthalpy Entropy c. Sound speed Joule-Thomson Therm, cond. Viscosity 

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V. V. Sychev, T. B. Selover (Eds.), Thermodynamic Properties of Methane, Hemisphere Publishing Corp., Washington, DC, 1987. 

SOME THERMODYNAMIC PROPERTIES OF METHANE ADSORBED ON RUTILE BETWEEN 80 AND 140 K. 

THERMODYNAMIC PROPERTIES OF METHANE AND NITROGEN AT LOW TEMPERATURES AND HIGH PRESSURES. PH. D. THESIS. 

Sychev VV, Vasserman AA, Zagoruchenko VA, Spiridonov GA, TsymarnyVA (1987) Thermodynamic properties of methane. National standard reference data service of the USSR. A series of property tables. Hemisphere, Washington... 

The second volume of the book by Hougen et al.y Chemical Process Principles , contains some tables of thermodynamic data. Tester, on behalf of the British Petroleum Co. Ltd., has prepared Thermodynamic Properties of Methane . Elliot and Gleiser treat the thermochemistry of steelmaking. 

H. E. Tester, Thermodynamic Properties of Methane , issued by British Petroleum Co., 1959. 

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