Sodium hydrosulfide CAS# 16721-80-5

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• Chemical Name:  Sodium hydrosulfide
• CAS No.:     16721-80-5
• Molecular Fomula: ：HNaS
• Molecular weight：56.06
• Appearance: Colorless needle-like crystals
• Sample：Available

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Description of sodiummercaptan

• Sodium hydrosulfide is the chemical compound with the formula NaHS. This compound is the product of the half neutralization of hydrogen sulfide with sodium hydroxide. NaHS is a useful reagent for the synthesis of organic and inorganic sulfur compounds, sometimes as a solid reagent, and more often as an aqueous solution. Solid NaHS is colorless and typically smells like H2S due to hydrolysis by atmospheric moisture. In contrast with sodium sulfide, Na2S, which is insoluble in organic solvents, NaHS, being a 1:1 electrolyte, is more soluble. Alternatively, in place of NaHS, H2S can be treated with an organic amine to generate an ammonium salt. Solutions of HS− are sensitive to oxygen, converting mainly to polysulfides, indicated by the appearance of yellow.

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Basic Info
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Basic Info

Numbering system

Properties

Safety Info

What is Sodium hydrosulfide ?

• With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Sodium hydrosulfide   which has developed particularly rapidly in recent years. Do you know about Sodium hydrosulfide?
• The official answer：Colorless needle-like crystals, easily deliquescent. The industrial product is generally a solution, orange or yellow in color. It is easily soluble in water and alcohol, and the aqueous solution is strongly alkaline. Sodium hydrosulfide is used in the dye industry for synthesizing organic intermediates and preparing auxiliaries for sulfide dyes, in the tanning industry for dehairing and tanning of raw hides, in the fertilizer industry for removing monomeric sulfur from activated carbon desulfurizes, in the mining industry for copper ore beneficiation in large quantities, in the production of man-made fibers for sulfite dyeing, etc. It is the raw material for manufacturing ammonium sulfide and semi-finished products of pesticide ethanethiol and is also used in wastewater treatment, etc. The production process of sodium hydrosulfide is relatively mature, but with the development of many forms of economy and increasingly fierce competition, it is required to produce high quality and more products with the lowest possible input. The current preparation method of sodium sulfide is the caustic soda absorption method, which requires the raw material gas to be pure hydrogen sulfide gas, mainly using the tail gas of barium chloride or barium nitrate production and sodium hydroxide solution reaction to produce sodium sulfide. The caustic soda method to produce sodium sulfide requires the raw material gas does not contain carbon dioxide, if the raw material gas contains carbon dioxide, there will be sodium carbonate generated in the production process: NaOH + CO2 → Na2CO3 + H2O, the generation of sodium carbonate not only reduces the yield of caustic soda but also affect the quality of sodium sulfide, affecting the use of users, carbon dioxide content greater than 10%, in the production process will also block equipment and If the carbon dioxide content is greater than 10%, it will block the equipment and pipeline in the production, so that the production cannot be carried out normally.

What’s the application of Sodium hydrosulfide ?

• Used as intermediates in organic synthesis, auxiliaries in the manufacture of sulfur dyes, dehairing, and tanning of raw hides, also used in copper ore beneficiation Dye industry for the synthesis of organic intermediates and auxiliaries in the preparation of sulfur dyes. The tanning industry is used for the dehairing and tanning of raw hides, and also for wastewater treatment. The fertilizer industry is used to remove the monomeric sulfur in activated carbon desulfurized. It is the raw material for manufacturing ammonium sulfide and pesticide ethanethiol semi-finished products. The mining industry is used in large quantities in copper ore beneficiation. Used in the production of man-made fibers for sulfite dyeing and other aspects. Used as intermediates of various organic products and auxiliaries of sulfide dyes, also used in the production of leather dehairing, desulfurization of mucilage silk and fertilizers and pesticides, etc.

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