Universum: технические науки

Results and discussion.
The binary system NaClO
3
· CO(NH
2
)
2
-H
2
O was studied by the author [15], this 
system is part of the system that we are studying and our 
data are in good agreement with the literature. 
The 
solubility 
of 
the 
NaClO
3
∙CO(NH
2
)
2
-
H
2
SO
4
∙NH
2
C
2
H
4
OH-H
2
O system was studied using 
seven internal incisions. Based on the results of the study 
of binary systems and internal incisions, the complete 
polythermal diagram of this system was constructed in 
the temperature range from -65.2 to 60 °C. On the phase 
diagram of the solubility of the NaClO
3
∙CO(NH
2
)
2
-
H
2
SO
4
∙NH
2
C
2
H
4
OH-H
2
O system, the crystallization fields 
are distinguished: ice, urea, sodium monocarbami-
dochlorate, monoethanolammonium nitrate and com-
pounds of the composition NaClO
3
·CO(NH
2
)
2
. The in-
dicated fields converge at two triple nodal points of the 
system, for which the compositions of the equilibrium 
solution and the corresponding crystallization tempera-
tures are determined, which are shown in Fig. 1. 
The projections of the polythermal curves on the 
corresponding lateral water sides of the system wera 
constructed. The solubility diagram (Fig. 1) shows that 
a new compound of the composition NaClO
3
·CO(NH
2
)
2
is formed in the studied system. 

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№ 10 (91)
октябрь, 2021 г. 
74 
Figure 1. Polythermal solubility diagram of the NaClO