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Pressure, density and temperature ( p , ρ , T ) data and apparent molar volumes, V f o , of aqueous calcium acetate solutions Ca(CH3COO)2 (aq) over a wide range of temperatures from 273.15 to 353.15 K, pressures up to p = 100 MPa and molalities m , of 0.04918, 0.09367, 0.23797, 0.36365, 0.85923, 1.06930, 1.35223 and 1.81668 mol×kg-1 of Ca(CH3COO)2 are reported. The combined expanded uncertainty of the density ( ρ ) measurements at the 95 % confidence level with a coverage factor of k = 2 was estimated to be U c( ρ ) = ±0.3 kg∙m‐3. The measurements were realized with an Anton Paar DMA HPM vibration tube density meter. The system was calibrated using double-distilled water, aqueous NaCl solutions, methanol, toluene and acetone. An equation of state for fitting of the ( p , ρ , T ) data of aqueous calcium acetate was developed as a function of pressure, temperature and molality. After a thorough analysis of literature values and validity of the constructed equation of state, various thermophysical properties, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat cap­acities, thermal pressure coefficient and internal pressure at the investigated state parameter int­ervals were calculated.

Apparent molar volumes, Vф, of calcium acetate (Ca(Ch3COO)2(aq)) at 273.15 to 353.15 K and pressures up to 100 MPa