ABSTRACT

Excess molar enthalpies (Hm,123 E ), measured at (298.15, 308.15, and 318.15) K in a Calvet low-temperature microcalorimeter, are reported for the ternary mixture of p-cymene (1)+R-pinene (2) + a-pinene (3) at atmospheric pressure. The results serve to show that all the experimental Hm,123 E values are positive and that they increase with an increase in temperature. In all cases, maximum values were observed in the vicinity of x1=0.5. Furthermore, at constant x1, the measured Hm,123 E values increase as the ratio of x2/x3 increases.

Compounds

#	Formula	Name
1	C10H16	2-pinene
2	C10H16	.beta.-pinene
3	C10H14	1-(1-methylethyl)-4-methylbenzene

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	3
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	3
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	3
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	3
POMD	1 2	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	21
POMD	1 3 2	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	171

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

Excess Molar Enthalpies of p-Cymene + r-Pinene + a-Pinene at (298.15, 308.15, and 318.15) K and at Atmospheric Pressure

Liao, D.-K.[Dan-Kui], Meng, X.-L.[Xue-Lin], Tong, Z.-F.[Zhang-Fa], Zheng, D.-X.[Dan-Xing], Peng, D.-Y.[Ding-Yu], Lu, B. C.-Y.[Benjamin C.-Y.]

ABSTRACT