Keywords:
solubility, system, diagram, concentration, defoliants, crystallization temperatures, IR spectrum.
Ключевые слова:
растворимость, система, диаграмма, концентрация, дефолианты, температуры кристалли-
зации, ИК-спектр.
________________________________________________________________________________________________
Introduction.
The unfavorable arrival of autumn
weather can negatively affect the yield and quality of
crops. Agrochemical measures, such as defoliation are
applied to a range of crops to prevent yields from declin-
ing as a result of such natural factors.
Defoliants and desiccants are classified as harvest
aids because they are commonly used to facilitate me-
chanical harvesting [1-3].
Appropriate and safe harvesting aids will shorten
the time and make cotton picking easier [4].
The effectiveness of the harvest aid depends on the
environmental conditions before, during and after appli-
cation [5, 6]. Therefore, it is important to use the drugs
on time, that is before the onset of cold weather.
Existing chlorate-containing preparations do not
meet modern requirements due to some properties, i.e.
they have a “hard” effect on the plant and completely
destroy it and its immature boxes, which in turn leads to
a decrease in potential profitability. Currently, it is nec-
essary to offer effective multifunctional “soft” acting
drugs by adding physiologically active substances to
chlorate-containing defoliants [7]. Therefore, the syn-
thesis of valuable drugs containing physiologically ac-
tive substances has become one of the priority and nec-
essary directions for the development of modern inno-
vative technologies [8].
Methodology and materials.
Sodium monocarbami-
dochlorate was used for the study, which had synthesized
by dissolving urea together sodium chlorate in a 1: 1 mol
ratio. After the formation of a homogeneous solution of
the initial components, it was cooled, after which crys-
tals of the compound NaClO
3
·CO(NH
2
)
2
were obtained.
Based on the neutralization of monoethanolamine with
94% sulfuric acid (in 1:0.60 molar ratio), sulfate mo-
noethanolamine was synthesized.
The solubility polytherm of the NaClO
3
∙CO(NH
2
)
2
-
H
2
SO
4
∙NH
2
C
2
H
4
OH-H
2
O system was investigated by
the visual polythermal method [9]. Liquid nitrogen was
used as a freezing reagent in the study of solution solu-
bility.
Chemical and physico-chemical analysis methods
were used to identify the obtained new compound. In the
quantitative chemical analysis of liquid and solid
phases, the content of the chlorate ion was determined
by the volumetric permanganatometric method. [10], so-
dium-by flame photometry [11], elemental analysis for
carbon, nitrogen, hydrogen was carried out according to
the method [12]. The MIRacle10 IR spectrometer was
used to identify the source material and the new com-
pound [13,14].
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