Quaternary System LiCl Research Articles

THE SYSTEM LiCl–NaCl–KCl–H2O AT 25 °C

Of the component ternary systems of the quaternary system LiCl–NaCl–KCl–H2O, the system LiCl–KCl–H2O has not previously been investigated. This has now been done and it is shown to be very similar to the system LiCl–NaCl–H2O investigated by Smits, Elgersma, and Hardenberg (4). In both systems, the strongly hydrated lithium ion reduces the content of second salt to a low value at the (isothermal) invariant point.The quaternary system of the title has been investigated, using a new method of analysis which involves the determination of total chloride and of density. The quaternary invariant composition is similar to that of the ternary invariant in the system LiCl–KCl–H2O. In none of these systems is there formation of double salt or solid solutions and the only hydrate occurring as a solid phase is LiCl.H2O.