Liquid-liquid and liquid-solid equilibrium data of the ternary system water + LiCl + 2-methyl-2-propanol (tert-butanol) have been determined experimentally at 25 degrees C and 40 degrees C. The system presents a marked salting out effect since a small amount of LiCl can split the completely miscible water + 2-methyl-2-propanol system into two liquid phases in equilibrium. However, when more salt is added, the solubility curve of water in the organic solvent presents an unusual S shape.