ABSTRACT

Solid liquid equilibria for six organic binary mixtures, namely, pentanedioic acid (1) + 3-methylheptanedioic acid (3) (eutectic temperature TE = 329.94 K, eutectic composition x1E = 0.497); pentanedioic acid (1) + 2,2-dimethylbutanedioic acid (4) (TE = 354.07 K, x1E = 0.740); pentanedioic acid (1) + 2,3-dimethylbutanedioic acid (5) (TE = 338.95 K, x1E = 0.415); octanedioic acid (2) + 3-methylheptanedioic acid (3) (TE = 352.54 K, x1E = 0.144); octanedioic acid (2) + 2,2-dimethylbutanedioic acid (4) (TE = 386.49 K, x1E = 0.416); and octanedioic acid (2) + 2,3-dimethylbutanedioic acid (5) (TE = 368.30 K, x1E = 0.193, are measured in this study using differential scanning calorimetry. Simple eutectic behaviors for these systems are observed. The experimental results are correlated using the Wilson and nonrandom two-liquid activity coefficient models, and satisfactory results are presented.

Compounds

#	Formula	Name
1	C5H8O4	1,5-pentanedioic acid
2	C6H10O4	2,2-dimethyl-1,4-butanedioic acid
3	C6H10O4	2,3-dimethyl-1,4-butanedioic acid
4	C8H14O4	1,8-octanedioic acid
5	C8H14O4	3-methylheptanedioic acid

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	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	1	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	2	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	3	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	4	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	4	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	5	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	5	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	1 5	Eutectic temperature, K ; Liquid			Liquid Crystal - 1 Crystal - 5 Air at 1 atmosphere	DTA	1
POMD	1 5	Eutectic composition: mole fraction - 1 ; Liquid			Liquid Crystal - 1 Crystal - 5 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	1 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 5	DTA	8
POMD	1 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	8
POMD	1 2	Eutectic temperature, K ; Liquid			Liquid Crystal - 1 Crystal - 2 Air at 1 atmosphere	DTA	1
POMD	1 2	Eutectic composition: mole fraction - 1 ; Liquid			Liquid Crystal - 1 Crystal - 2 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	1 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	15
POMD	1 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	4
POMD	1 3	Eutectic temperature, K ; Liquid			Liquid Crystal - 1 Crystal - 3 Air at 1 atmosphere	DTA	1
POMD	1 3	Eutectic composition: mole fraction - 1 ; Liquid			Liquid Crystal - 1 Crystal - 3 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	DTA	7
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	DTA	9
POMD	4 5	Eutectic temperature, K ; Liquid			Liquid Crystal - 4 Crystal - 5 Air at 1 atmosphere	DTA	1
POMD	4 5	Eutectic composition: mole fraction - 4 ; Liquid			Liquid Crystal - 4 Crystal - 5 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	4 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 5	DTA	4
POMD	4 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 4	DTA	17
POMD	4 2	Eutectic temperature, K ; Liquid			Liquid Crystal - 4 Crystal - 2 Air at 1 atmosphere	DTA	1
POMD	4 2	Eutectic composition: mole fraction - 4 ; Liquid			Liquid Crystal - 4 Crystal - 2 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	4 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	DTA	8
POMD	4 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 4	DTA	9
POMD	4 3	Eutectic temperature, K ; Liquid			Liquid Crystal - 4 Crystal - 3 Air at 1 atmosphere	DTA	1
POMD	4 3	Eutectic composition: mole fraction - 4 ; Liquid			Liquid Crystal - 4 Crystal - 3 Air at 1 atmosphere	Derived from phase diagram analysis	1
POMD	4 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	DTA	4
POMD	4 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 4	DTA	15

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

Solid Liquid Equilibria for Six Binary Mixtures of Pentanedioic Acid, Octanedioic Acid, 3-Methylheptanedioic Acid, 2,2-Dimethylbutanedioic Acid, and 2,3-Dimethylbutanedioic Acid

Wang, T.-C.[Tzu-Chi], Chang, C.-H.[Chia-Hao]

ABSTRACT