Solubility data of LiCl.nH(2)O (n = 0, 1, 2) was evaluated by checking the consistency of evaluated vapor pressures with the experimental data. This process includes the following: (1) A series of vapor pressure data above the LiCl.nH(2)O saturated solution were evaluated, and reliable data were selected as "standard" data. (2) A BET model was selected to fit the selected experimental data of water activity at salt concentrations below 20 mol.kg(-1) and at temperatures ranging from 273.15 K to 428.65 K. (3) Vapor pressures for the solubility data given by different authors were calculated with the BET model and further compared with the standard data. (4) Those solubility data at which vapor pressures calculated with the BET model obviously deviate from the standard data were considered to be unreliable.