The viscosities of aqueous mixtures of diethanolamine (DEA) + N -methyldiethanolamine (MDEA), DEA + 2-amino-2-methyl-1-propanol (AMP), and monoethanolamine (MEA) + 2-piperidineethanol (2-PE) were measured from 30 °C to 80 °C. A Redlich−Kister equation for the viscosity deviation was applied to represent the viscosity. On the basis of the available viscosity data for five ternary systems, MEA + MDEA + H 2 O, MEA + AMP + H 2 O, DEA + MDEA + H 2 O, DEA + AMP + H 2 O, and MEA + 2-PE + H 2 O, a generalized set of binary parameters were determined. For the viscosity calculation of the systems tested, the overall average absolute percent deviation is about 1.0% for a total of 499 data points.
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Hsu et al. (1997) studied this question.
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