ABSTRACT

The solubility of saturated fatty acids is essential for the design and operation of separation and purification units since crystallization is the main method used in this case. In this work, the DSC technique was used to determine the solubility of lauric, palmitic and stearic acid in alcoholic solvents (ethanol, n-propanol, and 2-propanol). The comparison with literature data has confirmed the efficacy and precise of the DSC technique. For the three saturated fatty acids evaluated, the solubility was higher in 2propanol and lower in ethanol. Activity coefficient models (Margules, Wilson, and NRTL) were correlated with the experimental data, showing good agreement.

Compounds

#	Formula	Name
1	C12H24O2	dodecanoic acid
2	C16H32O2	hexadecanoic acid
3	C18H36O2	octadecanoic acid
4	C2H6O	ethanol
5	C3H8O	propan-1-ol
6	C3H8O	propan-2-ol

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	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	3	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	1 6	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	10
POMD	1 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	10
POMD	1 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	10
POMD	2 6	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	10
POMD	2 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	10
POMD	2 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	10
POMD	3 6	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	DTA	10
POMD	3 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	DTA	10

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

Solubility Measurement of Lauric, Palmitic, and Stearic Acids in Ethanol, n-Propanol, and 2-Propanol Using Differential Scanning Calorimetry

Bonassoli, Andrea Briones Goncalves, Oliveira, Grazielle, Sosa, Filipe Hobi Bordon, Rolemberg, Marlus Pinheiro, Mota, Marilsa Aparecida, Basso, Rodrigo Correa, Igarashi-Mafra, Luciana, Mafra, Marcos R.

ABSTRACT