LNG Density - Klosek-McKinley
Liquid density of LNG at cargo-tank temperature using the Klosek-McKinley corresponding-states method - the custody-transfer default for LNG cargo measurement.
Ideal mix molar volume
39.59cm³/mol
Corrected molar volume
39.61cm³/mol
LNG density
438.4kg/m³
Formula, assumptions, and limits
Typical LNG densities 425–475 kg/m³. Nitrogen increases density measurably; C3+ components also densify. Method reproduces GIIGNL custody-transfer practice to ±0.1 %.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Component mole fraction | mol/mol | GC composition | |
| Component molar mass | g/mol | NIST REFPROP | |
| Component pure liquid molar volume | cm³/mol | Klosek & McKinley 1968 | |
| Binary correction term | cm³/mol | GIIGNL handbook |