ABSTRACT

The data of density and viscosity for binary mixtures of N-methylpiperazine (NMP) with methylcyclohexane (MCH) or n-heptane have been measured from T = 298.15 K to T = 313.15 K at atmospheric pressure. Excess volume, VmE, for the binary mixtures are then calculated. Positive values of VmE are observed over the entire composition range, and the maximum value is 0.622 cm3*mol-1 at 313.15 K. The excess results are discussed in terms of the changes of molecular interactions in the mixtures, and the data of VmE are fitted against the composition with the Redlich-Kister type equation. The viscosities have also been correlated with several semiempirical equations. These physical property data and calculations provide valuable information on the development and application of piperazine derivatives.

Compounds

#	Formula	Name
1	C5H12N2	N-methylpiperazine
2	C7H14	methylcyclohexane
3	C7H16	heptane

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	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB:UFactor:4	3
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	3
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB::UFactor:4	3
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:12	3
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB::UFactor:4	3
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:4	3
POMD	2 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB:UFactor:4	33
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	33
POMD	1 3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	CAPTUB:UFactor:4	33
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	33

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Volumetric and Viscous Properties at Several Temperatures for Binary Mixtures of N-Methylpiperazine with Methylcyclohexane or n-Heptane

Yang, X.[Xi], Xing, Y.[Yan], Li, D.[Dan], Guo, Y.[Yongsheng], Fang, W.[Wenjun]

ABSTRACT