Density, Speed of Sound, Viscosity, Refractive Index, and Excess Volume ofN-Methyl-2-pyrrolidone + Ethanol (or Water or Ethanolamine) fromT= (293.15 to 323.15) K

Abstract

Experimental density, viscosity, speed of sound, and refractive index for binary mixtures of N-methyl-2-pyrrolidone with water, ethanol, and ethanolamine were measured over the entire composition range at different temperatures of (293.15 to 323.15) K. The effect of composition and temperature upon different physical properties has been analyzed. Excess volumes have been calculated, and their dependence on composition was mathematically represented by a Redlich−Kister-type equation.

Viscosity and surface tension of glycerol + N-methyl-2-pyrrolidone mixtures from 293 to 323 K

“…[2] Glycerol and N-methyl-2-pyrrolidone were added to water for enhancing the solubility of low water-soluble pharmaceuticals and also used as their individual or mixtures for various purposes. [3][4][5][6][7][8][9][10][11] The viscosity and/or surface tension of glycerol [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] and N-methyl-2-pyrrolidone [28][29][30][31][32][33] have been reported in the literature. To the best of our knowledge, there is no report on the properties of glycerol + N-methyl-2-pyrrolidone mixtures in the literature.…”

Density, Speed of Sound, Viscosity, and Surface Tension of Hexamethylenetetramine + Water + Ethanol Ternary Mixtures from T = 293.15 to 323.15 K

“…An increase in HMTA concentration causes a decrease in the effect of temperature on experimental data until the same value is reached at an HMTA molar fraction close to 0.08. This behavior has been observed only for some amines in aqueous solutions − related with the formation of rigid structures and especially clathrates for this type of aqueous solution …”

Investigation of Mixed MEA-Based Solvents Featuring Ionic Liquids and NMP for CO2 Capture: Experimental Measurement of CO2 Solubility and Thermophysical Properties

“…64,65 The solid line depicts regressed results. 2), w 1 = 0.1000 (▲), 65 w 1 = 0.2000 (▷); 64,65 MEA (1) + NMP (2), w 1 = 0.2089 ( ◇ ), 66 w 1 ≈ 0.30 (×). 66,67 experimental data are presented in Figures 3, 4, and 5 and listed in Tables 10 and 11.…”

“…2), w 1 = 0.1000 (▲), 65 w 1 = 0.2000 (▷); 64,65 MEA (1) + NMP (2), w 1 = 0.2089 ( ◇ ), 66 w 1 ≈ 0.30 (×). 66,67 experimental data are presented in Figures 3, 4, and 5 and listed in Tables 10 and 11. The fitted parameters and statistical deviations are listed in Tables 12 and 13.…”

“…45,70,75−77 c U(T) = 0.02 K; U(n D ) = 0.001; data recorded at 0.101 MPa and a standard wavelength of 589 nm, U(P) = 0.001 MPa. d Data for the refractive index (n D ) from the literature 66,78.…”