page_title: Bisulfide
section_title: Properties
hierarchical_section_title: Bisulfide / Properties
caption_attribution_description: English: Characteristic UV/VIS spectra of septic sewage. Bisulphide results in a peak absorption around 230nm.
context_page_description: Bisulfide is an inorganic anion with the chemical formula HS⁻. It contributes no color to bisulfide salts, and its salts may have a distinctive putrid smell. It is a strong base. Bisulfide solutions are corrosive and attack the skin.
  It is an important chemical reagent and an industrial chemical, mainly used in paper pulp industry, textiles, synthetic flavors, coloring brasses, and iron control.
context_section_description: A variety of salts are known, including sodium hydrosulfide and potassium hydrosulfide. Ammonium hydrosulfide, a component of "stink bombs" has not been isolated as a pure solid. Some compounds described as salts of the sulfide dianion contain primarily hydrosulfide. For example, the hydrated form of sodium sulfide, nominally with the formula Na₂S • 9H₂O, is better described as NaSH · NaOH • 8H₂O.
  Aqueous bisulfide absorbs light at around 230 nm in the UV/VIS spectrum. Using this approach, bisulfide has been detect in the ocean and in sewage.
  Bisulfide is sometimes confused with the disulfide dianion, S²⁻
  ₂, or ⁻S–S⁻.
caption: The UV/VIS spectrum of septic sewage from three different sites. The absorption of bisulfide is observed around 230 nm in each case.
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