Sj. Ashcroft et M. Benisa, EFFECT OF DISSOLVED-GASES ON THE DENSITIES OF HYDROCARBONS, Journal of chemical and engineering data, 42(6), 1997, pp. 1244-1248
Measurements have been made, using a vibrating tube densitometer, of t
he effects of dissolved air, nitrogen, oxygen, hydrogen, methane, and
carbon dioxide on the densities of liquid hydrocarbons at 298.15 K and
a total pressure of 101060 Pa. The hydrocarbons were heptane, octane,
nonane, decane, dodecane, tetradecane, hexadecane, cyclohexane, methy
lcyclohexane, and methylbenzene (toluene), Saturation of the liquids w
ith gases other than carbon dioxide decreases the density by amounts r
anging from about 0.004% for oxygen in hexadecane up to about 0.18 for
methane in heptane. Saturation with carbon dioxide increases the dens
ities by a maximum of almost 0.1%. For all gases, values of \Delta rho
\ decrease with increasing carbon number in an approximately linear ma
nner in the alkane series. Partial molar volumes of the gaseous solute
s have been calculated by combining the density results with literatur
e gas solubility data.