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Sodium Hydrosulfide

Sodium Hydrosulfide (CAS no: 16721-80-5) is the chemical compound with the formula NaHS. NaHS is a useful reagent for the synthesis of organic and inorganic sulfur compounds, sometimes as a solid reagent, most often as an aqueous solution. The chemical is a colorless solid that normally smells like H2S due to hydrolysis by atmospheric moisture.



Production Process involves reaction of sodium hydroxide with hydrogen sulfide, in which hydrogen sulfide source is gas obtained during decomposition of barium sulfide by treating barium sulfide pulp containing 30% BaS with sulfuric acid at BaS/H2SO4 . Thus the left out barium sulfate is separated from liquid phase by filtration, where upon barium sulfate is subjected to reductive firing at 900-1200°C to give out barium sulfide melt, which is leached with water to produce barium sulfide pulp. The final product is returned into sulfuric acid treatment stage.



  • Commercially Sodium Hydrosulfide suppliers and manufacturers use sodium hydrosulfide in the leather industry as a tanning agent.

  • People buy sodium hydrosulfide as a flotation in mining industry for extracting copper, molybdenum, cobalt, zinc, and nickel from raw ore.

  • Paper industry supply the chemical as a makeup chemical used in kraft process.

  • Sodium hydrosulfide is used in waste water treatment for heavy metal precipitation application.

  • Paper making industry use sodium hydrosulfide to add sulfidity to cooking liquor in kraft pulp mills.

  • Sulfur dyes suppliers and manufacturers buy it for making colour and dyes.



Exposure to sodium hydrosulfide may cause severe irritation to the skin, eyes, and respiratory tract. Sodium hydrosulfide may develop an allergic reaction. Breathing the chemical who buy sodium hydrosulfide may aggravate asthma or other pulmonary diseases and might cause headaches, dizziness, nausea and vomiting.


Storage and Handling

Sodium   hydrosulfide   manufacturers   and suppliers   must store the chemical in original container protected from direct sunlight in a dry, cool and well-ventilated area. It should be stored away from incompatible materials and food and drink. It is advisable to keep in a corrosion resistant container with a resistant inner liner. People who buy sodium hydrosulfide must separate the chemical from acids. Store the container tightly closed and sealed until ready for use. Containers which have been opened must be carefully resealed and kept straight to prevent leakage. Do not store in unlabeled containers. Usage of appropriate containment is essential to avoid environmental contamination.


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