Densities, Dynamic Viscosities, Speeds of Sound, and Relative Permittivities for Water + Alkanediols (Propane-1,2- and -1,3-diol and Butane-1,2-, -1,3-, -1,4-, and -2,3-Diol) at Different Temperatures

Abstract

Experimental densities, dynamic viscosities, speeds of sound, and relative permittivities for six binary mixtures of water + alkanediols (propane -1,2-and -1,3-diol and butane-1,2-, -1,3-, -1,4-, and -2,3-diol) were measured across the whole composition range and in the temperature range (298.15 to 338.15) K. The deviations in dynamic viscosities, excess isentropic compressibilities, and deviations in relative permittivities were also calculated and fitted to a Redlich-Kister type equation. The partial molar volumes at infinite dilution for the water in six binary mixtures and the differences in these values among various diol isomers were calculated and examined to ascertain structural information on the water molecules around various diols. The variation of the Kirkwood correlation factor was also examined across the whole composition range of the mixtures.

Molecular interactions in binary mixtures of formamide with 1-butanol, 2-butanol, 1,3-butanediol and 1,4-butanediol at different temperatures: An ultrasonic and viscometric study

“…The reliability of experimental measurements of u and η was ascertained by comparing the experimental data of pure liquids with the corresponding values, which were available in the literature [6,15,[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] at the studied temperatures. This comparison is given in Table 1 and the agreement between the experimental and the literature values is found good in general.…”

Densities and volumetric properties of (formamide+ethanol, or 1-propanol, or 1,2-ethanediol, or 1,2-propanediol) mixtures at temperatures between 293.15K and 318.15K

“…The temperature of the test liquids during the measurements was maintained to an accuracy of ±0.02 K in an electronically controlled thermostatic water bath (JULABO, Model-MD, Germany). The reliability of experimental measurements of q was ascertained by comparing the experimental data of pure liquids with the corresponding values, which were available in the literature [2,4,16,[18][19][20][21][22][23][24][25][26] at the studied temperatures. This comparison is given in table 1 and the agreement between the experimental and the literature values is found good in general.…”

An insight into the micellization of dodecyldimethylethylammonium bromide (DDAB) in the presence of bovine serum albumin (BSA)

“…The viscometer was calibrated using standard pure solvents. The average of the three set data for flow times of the solvents was used for the calculation of the viscosity [19]. The viscometer constants, A and B, were calculated by solving Eq.…”