Input
°C
MPa

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Total (%)
100
Graph
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Results
Temperature (°C)
15
Pressure (MPa)
0.101325
Mass density (kg/m³)
0.712

Compression factor (-)
0.9978
Molar mass (kg/kmol)
16.8036
Molar density (kmol/m³)
0.04238
Notes

This calculator determines the mass density of natural gas using the AGA8 detailed characterization equation (i.e. AGA8-92DC). It is valid subject to the following conditions:

  • Absolute pressure: 0 MPa ≤ p ≤ 65 MPa
  • Temperature: 225 K ≤ T ≤ 350 K
  • Superior calorific value: 20 MJ/m³ ≤ HS ≤ 48 MJ/m³
  • Relative density: 55% ≤ d ≤ 90%
  • Methane: 50% ≤ xCH₄ ≤ 100%
  • Nitrogen: 0% ≤ xN₂ ≤ 50%
  • Carbon dioxide 0% ≤ xCO₂ ≤ 30%
  • Ethane 0% ≤ xC₂H₆ ≤ 20%
  • Propane 0% ≤ xC₃H₈ ≤ 5%
  • Hydrogen 0% ≤ xH₂ ≤ 10%
References
  • 12213-2 () Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis
  • , () Compressibility Factors for Natural Gas and Other Related Hydrocarbon Gases, American Gas Association (AGA) Transmission Measurement Committee Report No. 8, American Petroleum Institute (API) MPMS, Chapter 14.2, Second Edition, November 1992