ABSTRACT

In this investigation, the mutual solubilities for the ternary Na2C2O4 + H2O2 + H2O system were determined at (283.15 and 293.15) K. The phase diagrams of the system were constructed based on the measured solubility. The compound Na2C2O4*H2O2 was confirmed by Schreinemaker's wet residue method. In addition, the density of the system was obtained. At (283.15 and 293.15) K, two solid phases were formed in the ternary Na2C2O4 + H2O2 + H2O system, which corresponded to Na2C2O4 and Na2C2O4*H2O2. The phase diagrams of the ternary system were similar at different temperatures; the solubilities of Na2C2O4 and Na2C2O4*H2O2 in water increased slightly with increasing temperature. The crystalline region of the compound Na2C2O4*H2O2 decreased as the temperature increased, the temperature having little effect on the yield of Na2C2O4*H2O2.

Compounds

#	Formula	Name
1	C2Na2O4	sodium oxalate
2	H2O2	hydrogen peroxide
3	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	Constraint	Phase	Method	#Points
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	PYCNOM:UFactor:32	9
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	PYCNOM:UFactor:32	19
POMD	1 2 3	Mass fraction - 1 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	Titration method	9
POMD	1 2 3	Mass fraction - 1 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	Titration method	19
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	PYCNOM:UFactor:32	2
POMD	1 3	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	Titration method	2

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

Solubility and Phase Diagram for the Ternary Sodium Oxalate + Hydrogen Peroxide + Water System at (283.15 and 293.15) K

Zhao, H.-k.[Hong-kun], Zhang, D.-S.[Dao-Sen], Tang, C.[Cao], Li, R.-R.[Rong-Rong], Su, M.-L.[Ming-Li], Xu, W.-L.[Wen-Lin], Wang, Y.-Q.[Ya-Qiong]

ABSTRACT