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      • Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO4 and is the potassium acid salt of sulfuric acid. It is a white, water-soluble solid.


      Preparation


      More than 1 million tons were produced in 1985 as the initial stage in the Mannheim process for producing potassium sulfate. The relevant conversion is the exothermic reaction of potassium chloride and sulfuric acid:

      KCl + H2SO4 → HCl + KHSO4
      Potassium bisulfate is a by-product in the production of nitric acid from potassium nitrate and sulfuric acid:

      KNO3 + H2SO4 → KHSO4 + HNO3


      Chemical properties


      Thermal decomposition of potassium bisulfate forms potassium pyrosulfate:

      2 KHSO4 → K2S2O7 + H2O
      Above 600 °C potassium pyrosulfate converts to potassium sulfate and sulfur trioxide:

      K2S2O7 → K2SO4 + SO3


      Uses


      Potassium bisulfate is commonly used to prepare potassium bitartrate for winemaking. Potassium bisulfate is also used as a disintegrating agent in analytical chemistry or as a precursor to prepare potassium persulfate, a powerful oxidizing agent.


      Occurrence


      Mercallite, the mineralogical form of potassium bisulfate, occurs very rarely. Misenite is another more complex form of potassium bisulfate with the formula K8H6(SO4)7.


      References

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    Potassium bisulfate - Wikipedia

    Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO 4 and is the potassium acid salt of sulfuric acid. It is a white, water-soluble solid.

    Potassium bisulfate | KHSO4 | CID 516920 - PubChem

    Potassium bisulfate | KHSO4 or HKO4S | CID 516920 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

    Potassium bisulfate reagent grade 7646-93-7 - MilliporeSigma

    Potassium bisulfate is an inorganic potassium salt. On heating it from 300 to 700°C, it transforms to molten form and the reactions occurring in this transition have been investigated by Raman spectra. Its electrical conductance values have been evaluated (T = …

    Potassium bisulfate | 7646-93-7 - ChemicalBook

    27 Jan 2025 · Potassium bisulfate (CAS 7646-93-7) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices, suppliers, SDS and more, available at Chemicalbook.

    Potassium Bisulfate - Encyclopedia.com

    Potassium bisulfate (poe-TAS-ee-yum BYE-sul-fate) is an odorless white crystalline solid that begins to decompose at its melting point. It is deliquescent, meaning that has such a strong tendency to absorb moisture from the air that it becomes wet and dissolves in …

    Potassium bisulfate - Wikiwand

    Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO 4 and is the potassium acid salt of sulfuric acid. It is a white, water-soluble solid.

    Potassium bisulfate - Sciencemadness Wiki

    27 Okt 2019 · Potassium bisulfate is an acid salt of potassium, with the formula KHSO4, made from the partial neutralization of a potassium base. Potassium bisulfate will decompose when heated above 250-300°C to form potassium pyrosulfate and water: Heating the potassium pyrosulfate above 600°C will give off sulfur trioxide and leave behind potassium sulfate.

    Potassium bisulfate 99.99+ trace metals 7646-93-7

    Potassium bisulfate (Potassium hydrogen sulfate) | Buy chemicals and reagents online from Sigma Aldrich

    Potassium bisulfate Definition & Meaning - Merriam-Webster

    The meaning of POTASSIUM BISULFATE is a crystalline salt KHSO4 that gives an acid reaction in solution, that is made by treating potassium sulfate with sulfuric acid, and that is used chiefly in making cream of tartar and as a flux; potassium hydrogen sulfate.

    SAFETY DATA SHEET - Fisher Sci

    Potassium bisulfate Revision Date 28-Dec-2021 Most important symptoms and effects Causes burns by all exposure routes. Product is a corrosive material. Use of gastric lavage or emesis is contraindicated. Possible perforation of stomach or esophagus should be investigated: Ingestion causes severe swelling, severe damage to the delicate tissue