Density and Heat Capacity of Liquids from Speed of Sound

Table 1

p-T ranges covered in the subcritical domain.

Substance	, MPa		, K
	min	max	min	max
Ar	0.70	3.40	100.00	110.78/141.69
N2	0.20	2.20	70.000	83.626/117.41
CO2	1.00	6.00	220.00	233.03/295.13
CH4	0.10	3.40	100.00	111.51/181.05

At the lowest/highest pressure of the domain.