Empirical viscous coefficients of dilute solutions of tetraethylene glycol dimethyl ether in 2-propanol and in 2-butanol at different temperatures

• Published in: Journal of molecular liquids Vol. 115; no. 2; pp. 69 - 74
• Main Authors: Aznarez, S., Amid, A., de Ruiz Holgado, M.M.E.F., Arancibia, E.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.11.2004
• Subjects: 2-Butanol; 2-Propanol; Density; Tetraethylene glycol dimethyl ether; Viscosity; Viscosity; 2-Butanol; Density; 2-Propanol; Tetraethylene glycol dimethyl ether
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2004.04.002

This paper reports experimental viscosities and densities of binary mixtures containing tetraethylene glycol dimethyl ether+(2-propanol, 2-butanol) at four different temperatures (288.15, 298.15, 308.15 and 318.15 K), over the mole fraction ( x) range of tetraethylene glycol dimethyl ether between 0≤ x≤0.1 and at atmospheric pressure. The empirical coefficients ( β G, γ G and Δ G 1,2* 0) were determined from the viscosity values of the binary mixtures in the dilute zone of tetraethylene glycol dimethyl ether, using the Tamamushi–Isono empirical relationship between the thermodynamic function, Δ G 1,2* 0, with the mole fraction of tetraethylene glycol dimethyl ether ( x) at a particular temperature. The Jones–Dole coefficient ( B) was calculated in a graphical way. Both contributions, the energetic and the volumetric ones, to coefficient ( B) were obtained. A comparative study of the Jones–Dole coefficient B and the coefficient β G of the solutions of tetraethylene glycol dimethyl ether in 2-alkanol with tetraethylene glycol dimethyl ether in 1-alkanol data, obtained from literature, was carried out. The results are discussed qualitatively using the rate process Eyring theory, applied to viscous flow.