How much salt could saturate water?

I assume you mean sodium chloride salt (NaCl). In that case, you would refer to the solubility of sodium chloride in water which is 35.7 grams per 100 mL of water at 0� C. However, this amount will be increased to approximately 39 g/100mL if the water is brought to boiling. If the solution is pressurized then the water may reach temperatures far above its boiling point and conversely the amount of NaCl which can be dissolved would increase far beyond its standard pressure and temperature saturation point. Salts are an ionic compounds that more specifically dissociate in water rather than dissolve. Sodium chloride forms a sodium cation (Na+) and the chlorine anion (Cl-) when it dissociates in water.