Liquid Density of Mixtures of Methyl Nonafluorobutyl Ether (HFE-7100) + n‑Heptane at Pressures up to 80 MPa and Temperatures from 298.15 to 393.15 K

High pressure and high temperature density data for the mixtures methyl nonafluorobutyl ether (HFE-7100) + n-heptane are reported in this work, at pressures from 0.1 to 80 MPa and temperatures from 298.15 to 393.15 K. The uncertainty of experimental measurements is 0.7 kg·m–3, performed by means of a vibrating tube densitometer. The Tait-like equation was used to fit the experimental density data, with low standard deviations. Moreover, the derived properties isobaric thermal expansivity and isothermal compressibility were calculated.