Chemical elements
    Physical Properties
    Chemical Properties
      Silicon Tetrahydride
      Silicon Tetrafluoride
      Hydrofluosilicic Acid
      Silicon Subfluoride
      Silicon Tetrachloride
      Silicon Tetrabromide
      Silicon Tetra-iodide
      Mixed Halides of Silicon
      Halogen Derivatives of Silico-ethane
      Halogen Derivatives of Silicopropane
      Halogen Derivatives of Silicobutane
      Halogen Derivatives of Silicopentane and Silicohexane
      Silicon Oxychlorides
      Silicon Dioxide
      Silicoformic Anhydride
      Silico-oxalic Acid
      Silicomes-oxalic Acid
      Silicon Disulphide
      Silicon Monosulphide
      Silicon Oxysulphide
      Silicon Thiochloride
      Silicon Thiobromide
      Silicon Chloroitydrosulphide
      Silicon Selenide
      Silicon Tetramide
      Silicon Di-imide
      Silicon Nitrimide
      Siliconitrogen Hydride
      Silicon Nitrides
      Crystalline Silicon Monocarbide
      Silicon Dicarbide
      Silicon Carboxide
      Borides of Silicon
    PDB 1fuq-4ehr

Silicon Carboxide

The compound (SiCO)x is formed when silicon is heated to whiteness in an atmosphere of carbon dioxide:

3Si + 2CO2 = SiO2 + 2SiCO.

After the removal of silica with hydrofluoric acid the carboxide remains as a greenish white powder, which is stable towards alkalis.

A product called Siloxicon has been prepared by Colson, and is manufactured by the Acheson Company at Niagara, by heating a mixture of sand, powdered coke, and sawdust in the electric furnace to a temperature not exceeding 2800° C. The reaction is approximately

2SiO2 + 5C = Si2C2O + 3CO,

but the product is a mixture, and may contain other bodies besides Si2C2O, e.g. C7Si7O, if the proportion of carbon to silica is varied. Siloxicon is refractory, and greyish green when cold, but light yellow above 300° F.; its density is 2.73, and it binds when ground with water and fired.

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