Liquid densities and excess molar volumes for water plus diethylene glycolamine, and water, methanol, ethanol, 1-propanol + triethylene glycol binary systems at atmospheric pressure and temperatures in the range of 283.15-363.15 K

Liquid densities and excess molar volumes (V-E) are reported for the binary water + diethylene glycolamine, and water, methanol, ethanol, I-propanol + triethylene glycol systems at atmospheric pressure and temperatures between 283.15 and 363.15 K in 10 K intervals. Negative V-E were found for all investigated systems. At given temperature, the most negative V-E is for the water + diethylene glycolamine system. For water containing systems, V-E increase with temperature while the inverse effect was observed for alcoholic systems, i.e. V-E became more negative with increasing temperature. For the triethylene glycol systems at constant temperature, absolute value of V-E decreases in the series: water > methanol > ethanol > 1-propanol within the whole composition range. The experimental results have been correlated using the three parameter Redlich-Kister equation. (C) 2003 Elsevier B.V. All rights reserved.