Volumetric and Transport Properties of Binary Mixtures of n-Octane + Ethanol, + 1-Propanol, + 1-Butanol, and + 1-Pentanol from (293.15 to 323.15) K at Atmospheric Pressure

Abstract

We present densities and dynamic viscosities of binary mixtures of n-octane with ethanol, 1-propanol, 1-butanol, and 1-pentanol. Measurements are performed at atmospheric pressure from (293.15 to 323.15) K using a vibrating-tube densimeter and three Cannon−Fenske viscosimeters. We have calculated the excess molar volumes and the viscosity deviations from the experimental measurements. Results have been correlated to Redlich−Kister type equations.

Density, Speed of Sound, and Refractive Index Measurements for the Binary Mixture (1, 4-Dioxane + Isobutyric Acid) at T = (295.15, 298.15, 301.15, 304.15, 307.15, 310.15, and 313.15) K

“…29 The chemical interactions contribute negatively to the excess molar volume. 32,33 The factors that causes expansion of volume on mixing of the components can be explained in the terms of dissociation of one component or both of the components, steric hindrance due to branching of chains, geometrical mismatch of molecules, and formation of weaker solute−solvent bond than solute− solute and solvent−solvent bonds, solvent−solvent bonds. 31 The studied system shows negative excess molar volumes that increase in magnitude with temperature and with minima displayed at the composition x 1 = 0.5, as observed in Figure 1.…”

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C22O1IM][NTF2] with Alcohols

“…First, the density and viscosity values of methanol and ethanol were measured by a DMA 5000M density meter and a Lovis 2000ME viscometer in the temperature range from 288.15 to 318.15 K and at pressure p = 0.1 MPa, respectively. The measured results and the corresponding reported values − are all listed in Table S1. The absolute relative deviations (ARD) % were calculated according to eq , and the results are also listed in Table S1. where P exp and P lit represent the experimental and literature density (viscosity) values, respectively, and the corresponding absolute deviation diagrams are shown in Figures and .…”

“…ARDs of density of methanol (a) and ethanol (b) at various temperatures: (a) methanol: black ■ ref ; red ● ref ; blue ▲ ref ; pink ▼ ref ; green ◆ ref ; (b) ethanol: black ■ ref ; red ● ref ; blue ▲ ref ; pink ▼ ref ; green ◆ ref ; navy blue ◀ ref ; violet ▶ ref .…”

“…In addition, in the process of the experiment, the density and viscosity of the samples were always manipulated inside a glovebox under an inert atmosphere to avoid water absorption. The density and viscosity of methanol and ethanol were measured in this work at T = (288.15–318.15) K and p = 0.1 MPa and compared with the reported works, − as shown in Table S1.…”

Electrical Conductivity and Viscosity in Binary Organic Liquid Mixtures: Participation of Molecular Interactions and Nanodomains

“…In these liquids and liquid mixtures, dielectric properties are governed by molecular association, principally involving hydrogen bonding. Viscometry is sensitive to intermolecular interactions in liquid mixtures, leading to deviations from ideal mixing behavior [11][12][13][14]. Dielectric studies relating to alkane/alcohol mixtures, thereby also probing liquid microstructure, have largely involved the determination of relaxation phenomena and dipole moments using permittivity and impedance measurements [15][16][17][18][19][20][21][22][23][24][25].…”