Densities, Viscosities, Refractive Indices, and Surface Tensions of Dimethyl Sulfoxide + Butyl Acetate Mixtures at (293.15, 303.15, and 313.15) K

2000 ◽  
Vol 45 (2) ◽  
pp. 395-398 ◽  
Author(s):  
Nikos G. Tsierkezos ◽  
Antonis E. Kelarakis ◽  
Maria M. Palaiologou
Keyword(s):  
Dimethyl Sulfoxide ◽  
Butyl Acetate ◽  
Refractive Indices ◽  
Surface Tensions

Prediction of Excess Volumes and Excess Surface Tensions from Experimental Refractive Indices

2000 ◽  
Vol 38 (2) ◽  
pp. 251-260 ◽  
Author(s):  
Ángel Piñeiro ◽  
Pilar Brocos ◽  
Alfredo Amigo ◽  
Mercedes Pintos ◽  
Ramón Bravo
Keyword(s):  
Excess Volumes ◽  
Refractive Indices ◽  
Surface Tensions ◽  
Excess Surface

scholarly journals Study of Refractive Indices and Its Theories for Mixtures of N, N-Diethylethanamine and Acetates

2020 ◽  
Vol 12 (3) ◽  
pp. 363-370
Author(s):  
P. Tyagi ◽  
K. Kumar ◽  
M. Rani ◽  
N. Sabharwal
Keyword(s):  
Experimental Data ◽  
Methyl Acetate ◽  
Butyl Acetate ◽  
Composition Range ◽  
Polynomial Equation ◽  
Carbon Chain ◽  
Refractive Indices ◽  
Carbon Chain Length ◽  
Propyl Acetate ◽  
Empirical Correlations

This paper reports the refractive indices ( ) of N,N-diethylethanamine + methyl acetate, ethyl acetate, propyl acetate, butyl acetate and pentyl acetate at 298.15 K and at different composition range. The various empirical correlations like Arago-Biot (AB), Gladstone-Dale (GD), Lorentz-Lorenz (L-L) Heller (H), Weiner (W), Newton (Nw) and Erying-John (E-J) were applied to experimental data for estimating theoretical value of refractive indices. For an equimolar mixture, the predicted deviation in refractive index values is consistent well with the experimental data. It has been found that the interactions between amine and different esters decrease when carbon chain length in ester increases. Also refractive indices are affected with change in temperature. To evaluate the standard deviation, RK polynomial equation was fitted to the measured refractive indices data.

scholarly journals Vapor pressure, density, viscosity and refractive index of dimethyl sulfoxide + 1,4-dimethylbenzene system

2008 ◽  
Vol 73 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Oana Ciocirlan ◽  
Olga Iulian
Keyword(s):  
Dimethyl Sulfoxide ◽  
Excess Molar Volumes ◽  
Excess Properties ◽  
Refractive Indices ◽  
Excess Functions ◽  
Liquid Equilibrium ◽  
Viscosity Deviations ◽  
Unifac Model ◽  
Equilibrium Data ◽  
Kister Equation

This paper reports the experimental results of isothermal vapor-liquid equilibrium data between 303.15 and 333.15 K, and densities, viscosities, refractive indices from 298.15 to 323.15 K of the dimethyl sulfoxide + 1,4-dime?thylbenzene system over the entire range of mixture composition. The obtained PTX data were correlated by the Wilson and NRTL models and estimated by the UNIFAC model. The excess Gibbs energy and activity coefficients were calculated and compared with others excess properties. Excess molar volumes, viscosity deviations and deviations in refractivity were calculated from the experimental data; all the computed quantities were fitted to the Redlich-Kister equation. The resulting excess functions were interpreted in terms of structure and interactions.

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