Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Physicochemical properties of {1-methyl piperazine (1) + water (2)} system at T = (298.15 to 343.15) K and atmospheric pressure

Rayer, A. V.[Aravind V.], Sumon, K. Z.[Kazi Zamshad], Henni, A.[Amr], Tontiwachwuthikul, P.[Paitoon]
J. Chem. Thermodyn. 2011, 43, 12, 1897-1905
ABSTRACT
Densities and viscosities of aqueous 1-methylpiperazine (1-MPZ) solutions are reported at T = (298.15 to 343.15) K. Refractive indices are reported at T = (293.15 to 333.15) K, and surface tensions are reported at T = (298.15 to 333.15) K. Derived excess properties, except excess viscosities, are found to be negative over the entire composition range. The addition of 1-MPZ reduces drastically the surface tension of water. The temperature dependence of surface tensions is explained in terms of surface entropy and enthalpy. The measured and derived properties are used to probe the microscopic liquid structure of the bulk and surface of the aqueous amine solutions.
Compounds
# Formula Name
1 C5H12N2 N-methylpiperazine
2 H2O water
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • 2
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Tensiometer with plate
  • 77
  • POMD
  • 1
  • 2
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 78
  • POMD
  • 1
  • 2
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 117
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 78