Viscosity of aqueous solutions of 2-methoxyethanol, 2-Ethoxyethanol (cas 110-80-5), and ethanolamine

Add time:08/25/2019    Source:sciencedirect.com

Viscosity (η) of (water + 2-methoxyethanol), (water + 2-ethoxyethanol), and (water + ethanolamine) were measured precisely at the temperatures (303.15, 308.15, 313.15, 318.15, and 323.15) K covering the whole composition range. The viscosity deviations (Δη) from linearity based on mole fraction were calculated from the viscosity data and fitted to the Redlich–Kister equation. The Δη values are positive over the entire range of composition for (water + 2-methoxyethanol) and (water + 2-ethoxyethanol). Δη exhibits maximum at x ∼ 0.30 for (water + 2-methoxyethanol), and at x ∼ 0.28 for (water + 2-ethoxyethanol). While Δη values for (water + ethanolamine) are slightly negative up to x ∼ 0.24 with minimum at x ∼ 0.11, then become more positive over the rest composition with maximum at x ∼ 0.72. The Δη values, in all the cases, decrease with the increase in temperature.

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