Sodium Hydrosulfide with chemical formula of NaHS also known as NAHS in copper flotation companies is used as a highly reactive form of sulfur and acts as an intermediate in the production of other chemicals, especially thio-chemicals used in textile processing, in the production of flame retardant resins, and in vulcanization accelerators.

Sodium Hydrosulfide (NaSH) is an economical form of reactive sulfur that is typically a light-yellow colored solution. Hydrogen Sulfide (H2S), a toxic gas, is evolved upon contact of NaSH with acids. NaHS is mildly corrosive to carbon steel and cast iron. Stainless steels are very resistant to corrosion. Copper and its alloys, aluminum and zinc are rapidly attacked. Polyvinyl chloride (PVC) storage systems are to be avoided.

Sodium hydrosulfide is light yellow flake & solid or fused mass. Sodium hydrosulfide is corrosive to skin and metal. Used in paper pulping, manufacturing dyes, and dehairing hides.

Reducible and corrosive alkaline substance. Significant deliquescence. High solubility in water and soluble in alcohol. Reacts with oxygen and carbon dioxide gas in the air to form sodium thiosulfate, sodium sulfite and sodium carbonate. Generates hydrogen sulfide gas on contact with acid.