Nátriumszulfid

Nátriumszulfid is the chemical compound with the formula Na₂S. It is an inorganic salt. Nátriumszulfid is typically encountered as white or colorless crystals, though impurities can give it a yellow or green tint. It is highly soluble in water, forming alkaline solutions due to the hydrolysis of the sulfide ion.

The compound is produced industrially by several methods. One common route involves the reduction of sodium sulfate with carbon at high temperatures. Another method is the reaction of hydrogen sulfide with sodium hydroxide. Nátriumszulfid is a key intermediate in the production of other sulfur compounds and is used in various industrial applications.

Its applications include use in the leather industry for dehairing hides, as a reducing agent in dyeing processes, particularly for sulfur dyes, and in the production of dyes and pigments. It also finds use in ore flotation, paper manufacturing, and as a chemical reagent in laboratories.

Nátriumszulfid is a corrosive substance and can cause skin and eye irritation. In solution, it releases hydrogen sulfide gas, which is toxic and has a characteristic rotten egg smell. Proper handling procedures and safety precautions are necessary when working with this chemical. It is important to store it in a dry, well-ventilated area away from acids and oxidizing agents.