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. 1975 Jan-Feb;79A(1):71–79. doi: 10.6028/jres.079A.003

Table 4.

Constants for equation of state (1-A), using ψ2(ρ, T), eq (7)

Methane Ethane
b 1/8 1/8
α 1/2 1/2
δ 2/3 2/3
ϵ 3/2 3/2
B0 1.9894 21671 2.2373 56347
B2 0.7924 35706 0.9304 97491
C0 1.9 1.9
C1 −0.8309 40825 −1.0494 11810
N 756 562
ΔP/P,% 0.46 0.79