SOLUBILITY OF LITHIUM HYDROXIDE IN WATER AND VAPOR PRESSURE OF SOLUTIONS OF LITHIUM HYDROXIDE ABOVE 220 F

摘要

The solubility of lithium hydroxide in water was determined for the temperature interval between 220 and 650 F. The literature furnished data for temperatures below 200 F. A maximum in the curve was found at about 240 F and a minimum at 480 F. The variations in solubility, however, were relatively small. For example, at 40 F, the solubility is 12.7 g LiOH per 100 g H2O;at 240 F, it is 17.7;at 480 F, it is 13.4;and at 650 F, it is 16.5.nThe vapor pressures of 4.76 w/o (2.09 moll), 8.59 w/o (3.92 molal), and saturated (approximately 6.25 molal) lithium hydroxide solutions were measured as a function of temperature. At about 688 F, the more dilute solution showed a depression in vapor pressure of about 130 psi, the intermediate 154 psi, and the saturated 158 psi.