Showing papers on "Compounds of zinc published in 1958"
TL;DR: In this article, the polythermal solubility diagram of the ternary system Zn(OH)2-H2O2 - H2O 2 - H 2O was constructed and enables the limits of existence of the solid phases of the system to be determined.
Abstract: 1.
The system Zn (OH)2-H2O2-H2O was studied at 30,20, 0, −10, and −20° by the solubility method.
2.
The true composition and succession of changes in the system Zn(OH)2-H2O2-H2O were established from a general analysis of data for the diagrams ZnO-H2O-1/2 O2 and ZnO-H2O2 in the liquid phase.
3.
In the system Zn (OH)2-H2O2-H2O in the temperature range from 30° to −20° it may be considered provisionally that the following solid phases exist:
a)
a series of hydrates of zinc peroxide: ZnO2 · 2H2O; ZnO2 · 1.5H2O; ZnO2 · H2O; ZnO2 • 0.5H2O;
b)
anhydrous zinc peroxide ZnO2;
c)
zinc peroxide monohydrate semiperhydrate: ZnO2 · 0.5H202 β H2O;
d)
perhydrates of zinc peroxide: ZnO2 · H2O2, ZnO2 · 2H2O2.
4
Comparison of our data on the system Zn (OH)2 - H2O2 - H2O in the temperature range from 30° to − 20° with data in the literature (Figure 1) shows that the great majority of the peroxy compounds of zinc reported previously were probably mechanical mixtures.
5.
The polythermal solubility diagram of the ternary system Zn (OH)2 - H2O2 - H2O was constructed and enables the limits of existence of the solid phases of the system to be determined.