Densities and viscosities for binary mixtures of N-methyldiethanolamine plus triethylene glycol monomethyl ether from 25 °C to 70 °C and N-methyldiethanolamine plus ethanol mixtures at 40 °C

This paper reports the measured values of the density and viscosity of binary mixtures of N-methyldiethanolamine (MDEA) and triethylene glycol monomethyl ether (TEGMME) at five temperatures in the range 25 degrees C to 70 degrees C over the whole concentration range. We also report the density and viscosity of the binary mixture MDEA + ethanol at 40 degrees C. The results are compared with data for aqueous mixtures and other alkanolamines when these are available. The derived excess molar volumes and viscosity deviations were correlated as a function of composition. The Grunberg-Nissan interaction energy constants are also reported.