Abstract

The gas-expansion method has been used to measure the amount-of-substance density of liquid tetramethylsilane, from 198 to 298 K and pressures up to 102 MPa. The experimental results have been fitted to two equations of state (Strobridge and Tait), which have been used to estimate the following properties of the compressed liquid: density, isothermal compressibility, isobaric expansivity, and molar enthalpy and entropy increments relative to the liquid at saturation. The amount-of-substance density of liquid tetramethylsilane along the (liquid + vapour) coexistence curve has been calculated from the Strobridge equation and the results have been compared with published values.

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