STUDY Of SOLVABILITY Of THE QUANTERNARY SYSTEM Of Naclо -Mgcl2-H2О

Abstract

The effectiveness of the chemicals used for defoliation depends on numerous factors; the main ones include the variety of cotton, biological maturity and readiness for defoliation, power of plant development, ambient temperature, soil moisture. The process of solubility in the system sodium hypochlorite - magnesium chloride - water has been studied for the first time. On the basis of binary and six internal sections of experimental data, a diagram of the solubility of the NaClO -MgCl2-H2O system was constructed in the temperature range from -38.0 to + 60°C in order to substantiate the conditions for the synthesis of a new compound, based on the initial components, with high physiological activity. Of these, cuts I-IV were drawn from the NaClO-H2O side to the MgCI2-H2O pole, and V-VI — from the MgCI2-H2O side to the NaClO-H2O apex. On the basis of the polytherms of lateral binary systems and internal sections, a polythermal diagram of the solubility of the system magnesium chloride-sodium hypochlorite-water was constructed, on which the ice crystallization fields, MgCl2·• 12H2О, are delimited; MgCl2 • 8H2O; MgCl2 •·6H2O crystal hydrates of magnesium chloride, NaClO·• 5H2O; NaClO·• 2.5H2O crystalline hydrates of anhydrous NaClO, as well as new compounds for this system Mg(ClO3)2 and NaCl. It was found that new compounds Mg (ClO3) 2 and NaCl were formed in this system with the participation of aqueous solutions of NaClO and MgCl2, which were identified by X-ray analysis, IR spectroscopic and mass spectroscopic methods of chemical and physicochemical analysis..