Partial molar volumes of organic solutes in water. VII. o- and p-Aminobenzoic acids at T = 298 K to 498 K and o-diaminobenzene atT = 298 K to 573 K and pressures up to 30 MPa |
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Affiliation: | Department of Physical Chemistry, Institute of Chemical Technology, 166 28 Prague, Czech Republic |
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Abstract: | Density data for dilute aqueous solutions of two isomeric aminobenzoic acids and of o -diaminobenzene (1,2-diaminobenzene) are presented together with partial molar volumes calculated from the experimental data. The measurements were performed at temperatures from 298.15 K up to either 498.15 K (aminobenzoic acids) or 573.15 K ( o -diaminobenzene) and at either atmospheric pressure, or at pressures close to the saturated vapour pressure of water, and also at pressure p = 30 MPa. The data were obtained using either a high-temperature and high-pressure flow vibrating-tube densimeter for measurements at elevated pressures or a commercial vibrating-tube cell DMA 602HT for measurements at atmospheric pressure. |
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