Densities, Viscosities, and Excess Properties for Binary Mixtures of Some Glycols and Polyglycols in N-Methylacetamide at 308.15 K

• Published in: Journal of chemical and engineering data Vol. 48; no. 3; pp. 625 - 627
• Main Authors: Vijaya Kumar Naidu, B, Chowdoji Rao, K, Subha, M. C. S
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 08.05.2003
• Subjects: Chemical thermodynamics; Chemistry; Exact sciences and technology; General and physical chemistry; Mixtures; Thermodynamic properties; Viscosity; Ethylene glycol; Molar volume; Binary system; Excess parameter; Experimental study; Density; Physical properties; Ethylene oxide polymer; Organic solvent; Hydroxyether; Carboxamide; Thermodynamic properties; Rheological properties
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je020178w

Densities and viscosities have been measured at 308.15 K over the entire range of composition for N-methylacetamide with ethylene glycol, diethylene glycol, triethylene glycol, poly(ethylene glycol)-200, and poly(ethylene glycol)-300. From the experimental data, excess molar volumes (V E) and deviations in viscosity (Δη) have been calculated, and the deviations are fitted to a Redlich−Kister equation to obtain the binary coefficients and estimate the standard deviations between the experimental and calculated quantities. The values of V E are negative whereas the values of Δη are positive over the entire composition range.