High-temperature vapor-liquid equilibria of helium + 1-methylnaphthalene and helium + n-hexadecane

Vapor-liquid equilibria were experimentally determined for binary mixtures of helium + 1-methylnaphthalene and helium + n-hexadecane at temperatures up to 705 K and pressures to 153 bar. The measurements were made in a flow apparatus to minimize thermal decomposition of chemicals at high temperatures. The equilibrium data were compared with calculated results from several equations of state.