Is Magnesium Sulfide Soluble In Water?

Magnesium sulfide (MgS) is not soluble in water. It has a very low solubility in water, with a reported solubility of only 0.00022 g/100 mL at room temperature. This is due to the high lattice energy of MgS, which makes it difficult for water molecules to break apart the ionic bonds holding the compound together. Additionally, magnesium sulfide reacts readily with water to produce magnesium hydroxide and hydrogen sulfide gas, which further limits its solubility in water.