The solubility of sodium chloride NaCl in water at room temperature 25C or 77F is approximately 357 grams per liter g/L . This means that 357 grams of NaCl can dissolve in 1 liter of water at this temperature.The solubility of NaCl in water increases with temperature. As the temperature of the water increases, more NaCl can dissolve in it. For example, at 0C 32F , the solubility is about 357 g/L, while at 100C 212F , the solubility increases to approximately 391 g/L. However, the increase in solubility with temperature is not very significant compared to some other salts, and the relationship is relatively linear between 0C and 100C.