ABSTRACT

Heat capacity for 1-butyl-3-methylimidazolium tosylate [C4mim][Tos] in the temperature range (5 to 370) K has been measured by adiabatic calorimetry. Temperatures and enthalpies of its phase transitions have been determined. Thermodynamic functions have been calculated for crystalline and liquid states. The thermal stability of [C4mim][Tos] has been determined by scanning calorimetry. Mutual solubility in binary mixtures of [C4mim]- [Tos] with water and caprolactam has been investigated, and the activity coefficients have been calculated. Heat capacities for three mixtures of [C4mim][Tos] with water have been measured by adiabatic calorimetry. On the basis of the calorimetric and SLE measurements for ([C4mim][Tos] + water) samples the heat capacity anomalies have been interpreted.

Compounds

#	Formula	Name
1	H2O	water
2	C6H11NO	1-aza-2-cycloheptanone
3	C15H22N2O3S	1-butyl-3-methylimidazolium tosylate

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	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2			Crystal 2 Crystal 1 Gas	Adiabatic calorimetry	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Metastable crystal			Metastable crystal Crystal 1 Gas	Adiabatic calorimetry	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 1			Crystal 1 Liquid Gas	Adiabatic calorimetry	1
POMD	3	Triple point temperature, K ; Crystal 2			Crystal 2 Crystal 1 Gas	Adiabatic calorimetry	1
POMD	3	Triple point temperature, K ; Crystal 1			Crystal 1 Liquid Gas	Adiabatic calorimetry	1
POMD	3	Triple point temperature, K ; Metastable crystal			Metastable crystal Liquid Gas	ADIACA:UFactor:4	1
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Crystal 2	Temperature, K; Crystal 2	Pressure, kPa; Crystal 2	Crystal 2	SMALLAD:UFactor:2	22
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Crystal 1	Temperature, K; Crystal 1	Pressure, kPa; Crystal 1	Crystal 1	SMALLAD:UFactor:2	22
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SMALLAD:UFactor:2	5
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Crystal 2	Temperature, K; Crystal 2		Crystal 2 Gas	SMALLAD:UFactor:2	184
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	SMALLAD:UFactor:2	55
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Metastable crystal	Temperature, K; Metastable crystal		Metastable crystal Gas	SMALLAD:UFactor:2	142
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Crystal 1	Temperature, K; Crystal 1		Crystal 1 Gas	SMALLAD:UFactor:2	303
POMD	3	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal 1	Temperature, K; Crystal 1	Pressure, kPa; Crystal 1	Crystal 1	SMALLAD:UFactor:2	22
POMD	3	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal 2	Temperature, K; Crystal 2	Pressure, kPa; Crystal 2	Crystal 2	SMALLAD:UFactor:2	22
POMD	3	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SMALLAD:UFactor:2	5
POMD	3	Molar entropy, J/K/mol ; Crystal 1	Temperature, K; Crystal 1	Pressure, kPa; Crystal 1	Crystal 1	SMALLAD:UFactor:2	22
POMD	3	Molar entropy, J/K/mol ; Crystal 2	Temperature, K; Crystal 2	Pressure, kPa; Crystal 2	Crystal 2	SMALLAD:UFactor:2	22
POMD	3	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SMALLAD:UFactor:2	5
POMD	1 3	Molar heat capacity at saturation pressure, J/K/mol ; Metastable crystal	Temperature, K; Metastable crystal	Mole fraction - 3; Metastable crystal	Metastable crystal Gas	SMALLAD:UFactor:2	131
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	VISOBS:UFactor:16	11
POMD	1 3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Liquid	SMALLAD:UFactor:2	71
POMD	1 3	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Mole fraction - 3; Crystal Temperature, K; Crystal		Crystal Gas	SMALLAD:UFactor:2	355
POMD	1 3	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid		Liquid Gas	SMALLAD:UFactor:2	87
POMD	2 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 3	VISOBS:UFactor:12	6
POMD	2 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	VISOBS:UFactor:12	7

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

1-Butyl-3-methylimidazolium Tosylate Ionic Liquid: Heat Capacity, Thermal Stability, and Phase Equilibrium of Its Binary Mixtures with Water and Caprolactam

Strechan, A. A.[Aliaksei A.], Paulechka, Y. U.[Yauheni U.], Kabo, A. G.[Andrey G.], Blokhin, A. V.[Andrey V.], Kabo, G. J.[Gennady J.]

ABSTRACT