Chemical elements
  Palladium
    Isotopes
    Energy
    Production
    Application
    Physical Properties
    Chemical Properties
      Palladous Fluoride
      Palladous Chloride
      Dichlor-palladous Acid
      Tetrachlor-palladites
      Palladium Trichloride
      Pentachlor-palladates
      Hexachlor-palladates
      Palladous Bromide
      Brom-palladites
      Brom-palladates
      Palladous Iodide
      Palladous Oxide
      Hydrated Palladium Sesquioxide
      Hydrated Palladium Dioxide
      Palladium Subsulphide
      Palladium Monosulphide
      Potassium Thio-palladite
      Palladium Disulphide
      Sodium Thio-palladate
      Palladous Sulphate
      Palladous Selenide
      Palladous Selenate
      Palladous Nitrate
      Palladium Cyanide
      Potassium Palladocyanide
      Palladium Monosilicide
    Catalytic Activity
    Types
    PDB 1ks4-3np2

Palladium Disulphide, PdS2






Palladic Sulphide, Palladium Disulphide, PdS2, has been prepared by igniting at bright red heat a mixture of ammonium chlor-palladate (1 part) with sulphur (12 parts) and sodium hydroxide (12 parts). The chlor-palladate may be replaced by palladous sulphide. The product is treated first with alcohol and then with dilute hydrochloric acid, when the disulphide is left as a dark brown crystalline powder, which readily dissolves in aqua regia. Exposure to air does not affect it, but ignition in an inert gas causes the loss of sulphur. With sulphides of the alkali metals, double sulphides are formed, known generally as sulpho- or thio-palladates, and having the general formula M2PdS3.


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