ABSTRACT

The equilibrium data on the aqueous quaternary system NH4Cl-CaCl2-AlCl3-H2O at 298 K was investigated by using the isothermal dissolution method, and the corresponding diagrams were constructed. There are three fields of crystalline in the phase diagram, which correspond to three single salts aluminium chloride hexahydrate(AlCl3*6H2O), ammonium chloride(NH4Cl), and calcium chloride hexahydrate(CaCl2*6H2O), respectively. The main crystallization filed is salt NH4Cl. The water content reaches the minimum value at the quaternary invariant point F, while the refractive index goes to the maximum value at point F. The equilibrium thermodynamics data of the calculation of the aqueous quaternary system NH4Cl-CaCl2-AlCl3-H2O at 298 K was done by using the Pitzer and extended Pitzer-Harvie-Weare thermodynamic model. It can be seen that the calculation values agree well with the experimental data.

Compounds

#	Formula	Name
1	ClH4N	ammonium chloride (NH4Cl)
2	CaCl2	calcium chloride
3	AlCl3	aluminum chloride
4	H2O	water

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	Phase	Method	#Points
POMD	2 1 4	Mass fraction - 1 ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	titration and spectrometry	1
POMD	2 1 4	Mass fraction - 1 ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	titration and spectrometry	1
POMD	2 1 4	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid Mass fraction - 1; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Pycnometric method	1
POMD	2 1 4	Refractive index (Na D-line) ; Liquid	Mass fraction - 2; Liquid Mass fraction - 1; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2 3 4	Mass fraction - 3 ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	titration and spectrometry	1
POMD	2 3 4	Mass fraction - 3 ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 2	titration and spectrometry	1
POMD	2 3 4	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid Mass fraction - 3; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Pycnometric method	1
POMD	2 3 4	Refractive index (Na D-line) ; Liquid	Mass fraction - 2; Liquid Mass fraction - 3; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	1
POMD	1 3 4	Mass fraction - 3 ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	titration and spectrometry	1
POMD	1 3 4	Mass fraction - 3 ; Liquid	Mass fraction - 1; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	titration and spectrometry	1
POMD	1 3 4	Mass density, kg/m3 ; Liquid	Mass fraction - 1; Liquid Mass fraction - 3; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Pycnometric method	1
POMD	1 3 4	Refractive index (Na D-line) ; Liquid	Mass fraction - 1; Liquid Mass fraction - 3; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	1

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

Measurement and Correlation of Phase Equilibria of Ammonium, Calcium, Aluminum, and Chloride in Aqueous Solution at 298.15 K

Yu, X.[Xudong], Liu, M.[Min], Zheng, Q.[Qiufeng], Chen, S.[Shuai], Zou, F.[Fang], Zeng, Y.[Ying]

ABSTRACT