The solubility of sodium chloride NaCl in water at 25C is approximately 36 grams per 100 grams of water. This means that at 25C, you can dissolve 36 grams of NaCl in 100 grams of water before the solution becomes saturated.The solubility of magnesium sulfate MgSO4 in water at 25C is approximately 35.1 grams per 100 grams of water. This means that at 25C, you can dissolve 35.1 grams of MgSO4 in 100 grams of water before the solution becomes saturated.Comparing the solubility of NaCl and MgSO4 at 25C, they are quite similar, with NaCl being slightly more soluble in water than MgSO4.