Sodium hydrosulfide (NaHS) is an important chemical raw material with wide applications in various industrial fields. The following are some of the main uses of sodium hydrosulfide:
1.Dye industry: Sodium hydrosulfide is used as an auxiliary in the synthesis of organic intermediates and the preparation of sulfur dyes, playing a key role in the color, stability, and dyeing effect of dyes.
2.Leather Industry: In the leather making process, sodium hydrosulfide is used for depilation and tanning of raw hides, as well as for wastewater treatment to help remove harmful metal ions from water.
3.Fertilizer Industry: Sodium hydrosulfide is used to remove monomer sulfur from activated carbon desulfurizers, improving desulfurization efficiency and purification processes.
4.Mining Industry: In the beneficiation process of non-ferrous metal ores such as copper mines, sodium hydrosulfide is used as a flotation agent to help separate metal minerals such as copper, zinc, and nickel.
5.Artificial Fiber Production: Sodium hydrosulfide is used for sulfite dyeing to ensure uniform color and stable quality of fibers.
6.Chemical Synthesis: Sodium hydrosulfide plays an important role in chemical synthesis as a raw material for the production of organic sulfides, dyes, and drugs.
7.Paper Industry: Sodium hydrosulfide is used as a bleaching agent and de ink agent, significantly improving paper quality.
8.Environmental Protection: Sodium hydrosulfide can be used as a heavy metal capture agent in wastewater treatment to help remove harmful metal ions from water.
9.Pesticide Production: Sodium hydrosulfide is a raw material used to manufacture ammonium sulfide and semi-finished pesticide ethanethiol, which is used to synthesize efficient and low toxicity pesticides.
The production process of sodium hydrosulfide is mainly obtained by reacting hydrogen sulfide gas with sodium hydroxide solution, and the reaction equation is H2S+NaOH → NaHS+H2O. Due to the strong corrosive and irritating odor of sodium hydrosulfide, special care should be taken when storing and using it. Dry and well ventilated warehouses should be selected, equipped with good ventilation equipment and emergency response devices for leaks.
