Refractive Index, Viscosity, Density, and Speed of Sound of Aqueous Sodium Tartrate Solutions at Various Temperatures

Abstract

Refractive index, viscosity, density, and speed of sound of solutions of sodium tartrate at (25, 35, and 45) °C have been measured. The obtained refractive index, viscosity, density, and speed of sound data were correlated with suitable equations. The experimental density data for sodium tartrate were used to obtain limiting apparent molal volume at each temperature from which the corresponding infinite dilution molal volume for tartrare ion was calculated. The obtained density data were also used together with the corresponding speed of sound data to determine isentropic compressibilities of the solutions, and these data were also fitted to an empirical equation.

Partitioning of water‐soluble vitamins in biodegradable aqueous two‐phase systems: Electrolyte perturbed‐chain statistical associating fluid theory predictions and experimental validation

“…Experimental data (symbols) from literature. 36,37 Lines: electrolyte perturbed-chain (ePC)-statistical associating fluid theory (SAFT) modeling using parameters from Tables 3 and 4 T A B L E 5 Modeling accuracies for all ATPS considered in this work (T = 298.15 K, p = 1 bar) the binary interaction parameters vitamin-salt ions and vitamin-PEG were estimated in this work. The following procedure has been applied for the estimation of k ij .…”

“…The required pure-component ePC-SAFT parameters were taken from the literature (PEG, Na + , Citrate 3− , vitamins) or were estimated by fitting them to experimental densities and osmotic coefficients of binary water-Na 2 Tartrate systems (Tartrate 2− ). [32][33][34][35][36][37][38] The binary interaction parameters between phase formers (PEG, salt ions) were fitted to experimental tie-lines from the literature (PEG-Na 3 Citrate) or to data determined in this work (PEG-Na 2 Tartrate). 17 The partition coefficients of vitamins (VB2, VB3 acid , VB3 amide , VB9, VB12) were predicted using the activity coefficients obtained with ePC-SAFT in each phase and at different tie-line compositions.…”

“…The conventional modeling approach used in the present work considers a homosegmented PEG chain. The required pure‐component ePC‐SAFT parameters were taken from the literature (PEG, Na + , Citrate 3− , vitamins) or were estimated by fitting them to experimental densities and osmotic coefficients of binary water–Na 2 Tartrate systems (Tartrate 2− ) 32‐38 . The binary interaction parameters between phase formers (PEG, salt ions) were fitted to experimental tie‐lines from the literature (PEG–Na 3 Citrate) or to data determined in this work (PEG–Na 2 Tartrate) 17 .…”

Thermophysical Properties of Binary Liquid Mixtures of Acetronitrile with 2- Ethoxyethanol and 2- Butoxyethanol at Temperatures 293K, 303K and 313K: Experimental and Computational Study

“…Viscosity and density data are required in many chemical engineering calculations involving fluid flow, heat and mass transfer. Moreover, the knowledge of dependence of viscosity and density on mixture composition and temperature is of considerable interest in understanding the intermolecular interactions [1][2][3][4][5][6] Internal pressure has been a subject of active interest and attempts have been made to show the significance of internal pressure as a fundamental property [7]. The present study reports the experimental values of viscosity (η) for the binary mixture of acetonitrile with 2 ethoxyethanol and 2butoxyethanol at temperatures 293K, 303K and 313K over the whole composition range.…”

Thermophysical Properties of Binary Liquid Mixtures of Acetronitrile with 2- Ethoxyethanol and 2- Butoxyethanol at Temperatures 293K, 303K and 313K: Experimental and Computational Study

“…Moreover, the knowledge of dependence of viscosity and density on mixture composition and temperature is of considerable interest in understanding the intermolecular interactions [1][2][3][4][5][6] Internal pressure has been a subject of active interest and attempts have been made to show the significance of internal pressure as a fundamental property [7]. The present study reports the experimental values of viscosity (η) for the binary mixture of acetonitrile with 2 ethoxyethanol and 2-butoxyethanol at temperatures 293K, 303K and 313K over the whole composition range.…”