ABSTRACT

The solubility of palmitic acid has been measured in ethanol, 2-propanol, acetone, heptane, hexane, and trichloroethylene and in the azeotropic mixtures of the solvents (ethanol-heptane; hexane-ethanol; ethanol-trichloroethylene; acetone-heptane; heptane-2-propanol; acetone-hexane; hexane-2-propanol; 2-propanol-trichloroethylene), by a dynamic method, from (290 to 325) K. Solubility data in pure solvents were fitted by the Wilson, NRTL, and UNIQUAC equations and the solubility of palmitic acid in azeotropic mixtures with the NIBS/Redlich-Kister equation. For all calculated results, the root-mean-square deviations of solubility temperatures vary from (0.2 to 0.82) K, depending on the equation used. The solubility in pure solvents decreased in the order: trichloroethylene greater than 2-propanol greater than hexane greater than heptane greater than acetone greater than ethanol. The solubility of the palmitic acid increased in azeotropic mixtures compared to the pure solvents, except for the ethanol-trichloroethylene mixture where the solubility was similar to the one in pure trichloroethylene.

Compounds

#	Formula	Name
1	C16H32O2	hexadecanoic acid
2	C2H6O	ethanol
3	C7H16	heptane
4	C6H14	hexane
5	C3H6O	acetone
6	C3H8O	propan-2-ol
7	C2HCl3	trichloroethene

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	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	VISOBS	1
POMD	1 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	15
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 6	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 7	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 2 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 2 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 2 7	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 5 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 5; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 6 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 5 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 5; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 6 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11
POMD	1 6 7	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Mole fraction - 6; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	11

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

Solubilities of Palmitic Acid in Pure Solvents and Its Mixtures

Calvo, B.[Beatriz], Collado, I.[Idoia], Cepeda, E. A.[Emilio A.]

ABSTRACT