CHEMISTRY

Basal tetrahedron $1/2$ $\mathrm{Li}_2\mathrm{SO}_4$ – $\mathrm{Na}\mathrm{Cl}$ – $\mathrm{RbNO}_3$ – $\mathrm{TlBr}$ in the seven-component reciprocal system – $\mathrm{Li}$, $\mathrm{Na}$, $\mathrm{Rb}$, $\mathrm{Tl}\parallel\mathrm{Br}$, $\mathrm{Cl}$, $\mathrm{NO}_3$, $\mathrm{SO}_4$

N. S. Dombrovskaya, E. A. Alekseeva, N. V. Khokhlova, V. I. Posypaiko

All-Union Research and Design Institute of Chemical Engineering, Moscow