Partial molar volumes of organic solutes in water. XIV. Polyhydric alcohols derived from ethane and propane at temperatures T = 298 K to T = 573 K and at pressures up to 30 MPa

doi:10.1016/j.jct.2005.08.015

The Journal of Chemical Thermodynamics

Volume 38, Issue 7, July 2006, Pages 801-809

https://doi.org/10.1016/j.jct.2005.08.015 Get rights and content

Abstract

Density data for dilute aqueous solutions of 1,2-ethanediol (ethylene glycol), 1,2-propanediol, 1,3-propanediol, and 1,2,3-propanetriol (glycerol) 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 T = 573.15 K and at pressure close to the saturated vapour pressure of water, at pressures close to p = 20 MPa and p = 30 MPa. The data were obtained using a high-temperature high-pressure flow vibrating-tube densimeter.

Introduction

This study is a continuation of a systematic investigation of partial molar volumes of organic solutes in dilute aqueous solutions in a wide interval of temperature and pressure. Data for selected solutes of the aromatic series (benzene and its mono- and di-substituted derivatives) have been already published (references can be found in our previous paper [1]). Recently a systematic study of the derivatives of the aliphatic hydrocarbon series has been launched; the data for methanol, ethanol, 1-propanol, and 2-propanol [1] and all isomeric butanols [2] have been published. This paper is the next part of this study; new data for 1,2-ethanediol, 1,2-propanediol, 1,3-propanediol, and 1,2,3-propanetriol are presented. The data were obtained using a high-pressure high-temperature densimeter [3], [4] equipped with an automated sampling device [5].

Section snippets

Experimental

The densimeter and experimental procedure are described in more detail elsewhere [3], [5]. The period of the vibrating tube of the densimeter was measured by means of a counter with an uncertainty of about ±0.2 ns, which corresponds to ±10⁻³ kg · m⁻³ in density. Repeated calibrations of the densimeter at each experimental temperature and pressure were performed using water and nitrogen whose densities were taken from the literature [6], [7]. The maximum systematic error of the measured density

Direct experimental data

Measured values of the density differences Δρ = ρ − ρ₁ where ρ and ρ₁ are the densities of the solution and water, respectively, and the molalities of organic solutes m₂ at various temperatures and pressures are available as a supplementary material (500 data points in the range of molality from (0.08 to 0.53) mol · kg⁻¹ for aqueous 1,2-ethanediol, 451 data points in the range of molality from (0.07 to 0.49) mol · kg⁻¹ for aqueous 1,2-propanediol, 492 data points in the range of molality from (0.08 to

Acknowledgement

Support from the Ministry of Education, Youth and Sports of the Czech Republic (fund MSM6046137307) is acknowledged.

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Partial molar volumes of organic solutes in water. XIV. Polyhydric alcohols derived from ethane and propane at temperatures T = 298 K to T = 573 K and at pressures up to 30 MPa

Abstract

Introduction

Section snippets

Experimental

Direct experimental data

Acknowledgement

J. Chem. Thermodyn.

J. Chem. Thermodyn.

J. Chem. Thermodyn.

J. Chem. Thermodyn.

J. Chem. Thermodyn.

J. Chem. Thermodyn.

J. Chem. Thermodyn.

Int. J. Thermophys.

J. Phys. Chem. Ref. Data

J. Phys. Chem. Ref. Data

Bull. Chem. Soc. Jpn.

J. Solution Chem.

J. Chem. Eng. Data