Phase compositions of vapor−liquid equilibrium (VLE) were measured for three binary
asymmetric systems of helium with 1-hexanol, 1-octanol, or 1-decanol at temperatures from
353 to 453 K and pressures up to 10 MPa. The solubility of helium in 1-alkanols, as evidenced
by the experimental results, is enhanced by increasing both pressure and temperature. Over
the investigated conditions, the saturated gas-phase composition of the 1-alkanol component
decreases with an increase of pressure at a constant temperature. Henry's constants of helium
in 1-alkanols were determined from the isothermal VLE data. The new data were used to test
various cubic equations of state and mixing rules.