LiNa3(SO4)2·6H2O: a lithium double salt causing trouble in the industrial conversion of Li2SO4 into LiOH

Abstract

Lithium trisodium bis(sulfate) hexahydrate, LiNa3(SO4)2·6H2O was crystallized from aqueous solution at 298 K and the structure solved at different temperatures between 90 and 293 K. The structure is isomorphic with the corresponding molybdate and selenate double salt hydrate. It belongs to the non-centrosymmetric trigonal space group R3c (161). The temperature dependence of the lattice parameters has been determined. Further characterization by powder XRD and thermal analysis is reported.

Keywords

• crystal structure
• lithium sulfate
• double salt hydrate
• isomorphism