Chemical elements
    Physical Properties
    Chemical Properties
    Atomic Weight
      Hydrogen Telluride
      Tellurium Tetrafluoride
      Tellurium Hexafluoride
      Tellurium Oxyfluorides
      Tellurium Dichloride
      Tellurium Tetrachloride
      Tellurium Perchlorate
      Tellurium Dibromide
      Tellurium Tetrabromide
      Tellurium Oxybromides
      Tellurium Tetra-iodide
      Tellurium Monoxide
      Tellurium Dioxide
      Tellurium Trioxide
      Telluric Acids
      Tellurium Disulphide
      Tellurium-Sulphur Sesquioxide
      Tellurium Sulphates
      Telluropentathionic Acid
      Tellurium Nitride
      Tellurium Nitrite
      Basic Tellurium Nitrate
      Carbon Sulphidotelluride
      Tellurium Dicyanide
    PDB 1el7-4fon

Telluropentathionic Acid, H2TeS4O6

The sodium salt of this acid may be prepared by the action of tellurium dioxide on an aqueous solution of sodium thiosulphate in the presence of hydrochloric acid:

TeO2 + 4Na2S2O3 + 4HCl = Na2TeS4O6 + Na2S4O6 + 4NaCl + 2H2O, The salt decomposes in the presence of alkali with separation of tellurium.

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