What Are The Physical Properties Of Sodium Sulfide?

Sodium sulfide is a yellow to brick-red crystalline solid with a pungent odor. It has a melting point of 1180°C and a boiling point of 1600°C. Sodium sulfide is soluble in water, but insoluble in ethanol and other organic solvents. Its density is 1.856 g/cm³ at room temperature. Sodium sulfide is hygroscopic, meaning it readily absorbs moisture from the atmosphere, and it reacts violently with water to produce hydrogen sulfide gas. The compound is also highly reactive with acids, chlorinated solvents, and oxidizing agents.