Partial molar volumes of organic solutes in water. IX. m-Aminophenol and benzonitrile at temperatures from 298 K to 573 K and o-cyanophenol at temperatures from 298 K to 498 K and at pressures up to 30 MPa

Density data for dilute aqueous solutions of 3-amino-1-hydroxybenzene (m-aminophenol), cyanobenzene (benzonitrile), and 2-cyano-1-hydroxybenzene (o-cyanophenol, o-hydroxybenzonitrile) are presented together with partial molar volumes at infinite dilution calculated from the experimental data. The measurements were performed at temperatures from T=298.15 K up to either T=573.15 K (m-aminophenol, benzonitrile) or T=498.15 K (o-cyanophenol) and at either atmospheric pressure, or at pressures close to the saturated vapor pressure of water, and also at p=30 MPa. The data were obtained using a high-temperature high-pressure flow vibrating-tube densimeter for measurements at elevated pressures and a commercial vibrating-tube cell DMA 602HT for measurements at atmospheric pressure