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Density data (196 points) for 1-phenyldecane (decylbenzene) and for 1-phenylundecane (undecylbenzene) at several temperatures between (293.15 and 353.15) K and pressures up to 65 MPa are reported. A vibrating tube densimeter with an uncertainty of (5 × 10 -4 g‚cm -3 was used to perform these measurements. The experimental density data were fitted with the Tait-like equation with standard deviations e1.5 × 10 -4 g‚cm -3 . The isobaric thermal expansivity, R p , and the isothermal compressibility, κ T , have been evaluated, calculating these derivative density properties using the Tait-like equation.

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The melting temperature of eight n-alkylcyclohexanes (decylcyclohexane, undecylcyclohexane, dodecylcyclohexane, tridecylcyclohexane, tetradecylcyclohexane, pentadecylcyclohexane, octadecylcyclohexane, and nonadecylcyclohexane) has been measured by means of a high-pressure microscopy device up to 100 MPa. The influence of the alkyl chain length on the melting temperatures and their pressure dependence is discussed.