ABSTRACT

Using a laser monitoring observation technique, the solubility of abietic acid in alcohols (isopropanol, isobutanol, 1-pentanol, isopentanol) has been measured by a dynamic method at atmospheric pressure. The melting point and enthalpy of fusion of abietic acid were determined by differential scanning calorimetry (DSC). The solubility of abietic acid in four solvents increased with an increase of temperature and the number of carbon atoms of alcohol chain, respectively. Experimental solubility data were correlated by means of the Wilson, NRTL and eh equations utilizing parameters derived from the related solid-liquid equilibrium (SLE) data. The results indicated that the above three equations are suitable for the description of the solubility data of abietic acid in the alcohols investigated.

Compounds

#	Formula	Name
1	C20H30O2	abietic acid
2	C3H8O	propan-2-ol
3	C4H10O	2-methyl-1-propanol
4	C5H12O	pentan-1-ol
5	C5H12O	3-methylbutan-1-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	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	14
POMD	3 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	14
POMD	4 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	14
POMD	5 1	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	14

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Measurement and correlation of solid-liquid equilibrium for abietic acid + alcohol systems at atmospheric pressure

Nong, W.[Weijian], Chen, X.[Xiaopeng], Wang, L.[Linlin], Liang, J.[Jiezhen], Wang, H.[Hailing], Long, L.[Liujin], Huang, Y.[Yanfen], Tong, Z.[Zhangfa]

ABSTRACT