ABSTRACT

Heat capacities of the a- and the b-phase of trielaidin were measured from 10 to 360 K. The enthalpy of fusion of the stable b-phase was found to be 177.4 J.g-1, the triple point temperature was 314.83 K and the calculated purity, assuming eutectic behaviour of the main component and the impurity, was 96.66 mol %. The enthalpy of fusion of the metastable a-phase was calculated to be 95.1 JWg-1; the melting temperature was estimated to be 288 K from DSC experiments. The heat capacity of the liquid phase can be given by a simple linear fit between 320 K and 360 K: cp(l) = (1.327 + 0.002529WT/K) J.K-1.g-1. In order to obtain a thermodynamically consistent set of entropy and enthalpy data for both forms, a zero entropy of 0.037 J.K-1.g-1 and a zero enthalpy of 41.48 J.g-1 had to be used for the a-phase. The origin of these values is discussed.

Compounds

#	Formula	Name
1	C57H104O6	trielaidin

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 Gas	Adiabatic calorimetry	1
POMD	1	Triple point temperature, K ; Crystal			Crystal Liquid Gas	Adiabatic calorimetry	1
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	26
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	SMALLAD:UFactor:2	123
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Metastable crystal	Temperature, K; Metastable crystal	Pressure, kPa; Metastable crystal	Metastable crystal	Small (less than 1 g) adiabatic calorimetry	114
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	43
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	3
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Metastable crystal	Temperature, K; Metastable crystal	Pressure, kPa; Metastable crystal	Metastable crystal	Small (less than 1 g) adiabatic calorimetry	37
POMD	1	Molar enthalpy, kJ/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	3
POMD	1	Molar enthalpy, kJ/mol ; Metastable crystal	Temperature, K; Metastable crystal	Pressure, kPa; Metastable crystal	Metastable crystal	Small (less than 1 g) adiabatic calorimetry	37
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	43
POMD	1	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	43
POMD	1	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	3
POMD	1	Molar entropy, J/K/mol ; Metastable crystal	Temperature, K; Metastable crystal	Pressure, kPa; Metastable crystal	Metastable crystal	Small (less than 1 g) adiabatic calorimetry	37

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

Investigation of the Thermal Behaviour of Trielaidin Between 10 K and 360 K

Miltenburg, J. C.[J. C. van], Ekeren, P. J. v., Gandolfo, F.[Francois], Floter, E.[Eckhard]

ABSTRACT