METHOD OF STUDYING SOLUBILITY IN MULTI-COMPONENT WATER-SALT SYSTEMS Russian patent published in 2011 - IPC G01N31/00 G01N33/18 

FIELD: physics.

SUBSTANCE: method involves experimental determination of the composition of equilibrium liquid phases (non-, mono- and higher version), boundaries of regions with different phase state, measuring easily determined physical property of the liquid phase after establishing equilibrium in known initial mixtures of components lying strictly on sections of the figure of the composition and plotting composition versus property graphs. Compositions of equilibrium solid phases and the non-version liquid phase are determined by calculating true coordinates from analytical coordinates for all experimental arbitrarily lying points on all boundaries of the non-version region on average ratio of the component, which is not in compositions of equilibrium solid phases on corresponding boundaries of the non-version region of the system, to water content.

EFFECT: obtaining more accurate data on phase equilibriums in a system, which eliminates even the hypothetical possibility of appearance of non-studied phase regions, low labour input into the process for experimental examination of the solubility isotherm of multi-component systems, simple process for identifying equilibrium solid phases which saturate non-version and mono-version system solutions without their isolation from liquid phases, prevention of loss of accuracy of investigations without increasing the number of components in systems of any type.

2 cl, 5 tbl, 4 dwg