Density and Viscosity of the Binary Systems Ethanol + Butan-1-ol, + Pentan-1-ol, + Heptan-1-ol, + Octan-1-ol, Nonan-1-ol, + Decan-1-ol at 0.1 MPa and Temperatures from 283.15 K to 313.15 K.

Abstract

This article presents experimental viscosity and density data for binary systems containing ethanol and one of the following 1-alkanols as the second component: butan-1-ol, pentan-1-ol, heptan-1-ol, octan-1-ol, nonan-1-ol, and decan-1-ol. These properties were measured at 0.1 MPa and at five different temperatures, ranging from 283.15 K to 313.15 K. The viscosity data have also been correlated by a model which combines Eyring's theory of viscous flow with a thermodynamic framework (Ind. Eng. Chem. Res. 2000, 39, 849). The model binary interaction parameters, for each of the binary systems, are also reported. The agreement between calculated and experimental data was rather good. The overall mean relative standard deviations did not exceed 0.01. The experimental viscosity deviations, obtained by the difference between the viscosity of the mixture and the mole fraction average of the pure component viscosities, were adjusted by means of Redlich−Kister polynomials. For all the systems studied negative values of viscosity deviations were obtained, for all temperatures, and over the whole mole fraction range.

Densities and Viscosities for Binary Liquid Mixtures of Pentanol Isomers from (288.15 to 328.15) K at 0.1 MPa

“…where x i , and M i are the mole fraction and molar mass of the component i; ρ and ρ i are the density of the mixture and of the pure components, respectively; and i indicates pure species 1 or 2. The standard uncertainty estimated in the excess molar volume is 0.057 cm 3 •mol −1 . Tables 3−5 show the values of the excess molar volumes for the mixtures investigated in this work.…”

“…This behavior represents a decrease of the compaction of the molecules due to the rupture of the hydrogen bonds between different alcohol molecules and suggests that the volume of the mixtures becomes a weighted composition average of the volume of the pure components. 17 This condition occurs only for those binary mixtures where the absolute numerical value of V E is smaller than the standard uncertainty estimated in the excess molar volume, u(V E ) = 0.057 cm 3 •mol −1 . The binary mixture of 1-pentanol + 2-pentanol presents absolute maximum values of V E greater than the u(V E ) at temperatures of (318.15 to 328.15) K and molar compositions of (0.3 to 0.8).…”

“…Standard uncertainties: u(x 1 ) = 0.002, u r (ρ) = 4.8 × 10 −4 , u(V E ) = 0.057 cm3 •mol −1 , u r (η) = 0.01, u(Δη) = 0.041 mPa•s, u(T) = 0.01 K for density, u(T) = 0.03 K for viscosity, and u(p) = 10 kPa.T h i s c o n t e n t i s o n l y l i c e n s e d f o r c o n s u m p t i o n b y A u t h o r i z e d U s e r s a f f i l i a t e d w i t h s c i t e . U s a g e b y a n y i n d i v i d u a l n o t d i r e c t l y a s s o c i a t e d w i t h s c i t e i s p r o h i b i t e d .…”

“…Standard uncertainties: u(x 1 ) = 0.002, u r (ρ) = 4.8 × 10 −4 , u(V E ) = 0.057 cm3 •mol −1 , u r (η) = 0.01, u(Δη) = 0.041 mPa•s, u(T) = 0.01 K for density, u(T) = 0.03 K for viscosity, and u(p) = 10 kPa. h i b i t e d .…”

Density and Viscosity of Binary Liquid Mixtures of Ethanol + 1-Hexanol and Ethanol + 1-Heptanol from (293.15 to 328.15) K at 0.1 MPa

“…Few authors have measured the densities and viscosities of the mixtures considered in this work. Faria et al 5 used a vibrating tube densimeter and a Canon-Fenske viscosimeter to measure the density and viscosity of the ethanol + 1-heptanol at (283. 15 to 313.15) K. Ali et al 6 measured the densities and viscosities of ethanol + 1-hexanol at 303.15 K. They used a Pyrex glass pycnometer and a Cannon-Ubbelhode viscosimeter to measure the densities and viscosities of this mixture.…”