Chemical elements
    Physical Properties
    Chemical Properties
      Titanium Trifluoride
      Titanium Tetrafluoride
      Hydrofluotitanic acid
      Potassium Titanifluoride
      Sodium Titanifluoride
      Titanium Dichloride
      Titanium Trichloride
      Titanium Tetrachloride
      Titanic Chloride
      Titanium Oxychlorides
      Hydrochlorotitanic Acid
      Addition Compounds of Titanium Tetrachloride
      Titanium Tribromide Hexahydrate
      Titanium Tetrabromide
      Titanic Bromide
      Hydrobromotitanic Acid
      Titanium Chlorobromides
      Titanium Di-iodide
      Titanium Tri-iodide
      Titanium Tetra-iodide
      Titanic Iodide
      Titanium Monoxide
Titanium Sesquioxide
      Titanium Dioxide
      Titanic Oxide
      Titanic Hydroxides
      Metatitanic Acid
      Titanium Monosulphide
      Titanium Sesquisulphide
      Titanium Disulphide
      Titanium Sulphates
      Titanous Sulphate
      Titanium Sesquisulphate
      Complex Sulphates of Tervalent Titanium
      Normal Titanic Sulphate
      Potassium Titanisulphate
      Potassium and Ammonium Titanylsulphates
      Titanous Nitride
      Titanic Nitride
      Titanium Nitrogen Halides
      Titaninitric Acid
      Titanium Phosphide
      Titaniphosphoric Acid
      Titanium Carbide
      Titanium Cyanonitride
      Titanium Thiocyanates
      Titanium Sesquioxalate
      Titanitartrates and Allied Salts
      Titanium Silicide

Titanium Cyanonitride

Very hard cubical crystals of a bright copper colour are sometimes found in the cavities of cast-iron and slag obtained by the smelting of titaniferous iron ore in the blastfurnace. This substance was mistaken by Wollaston for metallic titanium, but Wohler proved that it contained carbon and nitrogen, and attributed to it the formula Ti(CN)2.3Ti3N2. Wohler also obtained this substance artificially by strongly heating in a closed crucible a mixture of potassium ferrocyanide and titanic oxide, and by bringing titanium tetrachloride vapour into contact with fused potassium cyanide; it is also formed when a stream of nitrogen is passed over a white-hot mixture of titanic oxide and charcoal. Cyanonitride of titanium has a density of 5.28 (Wollaston) or of 4.1 to 5.1. It is unattacked by boiling nitric or sulphuric acid, but easily dissolved by a mixture of nitric and hydrofluoric acids. That it contains the cyanogen radicle is shown by the fact that when heated in a current of chlorine it forms a compound of titanium tetrachloride and cyanogen chloride, CNCl, which appears as a sublimate, and when ignited in a current of steam yields hydrogen, hydrogen cyanide and ammonia, leaving a residue of titanic oxide. When this substance is fused with potash, ammonia is evolved and titanate formed. Its composition cannot be regarded as settled; whether it is really titanium "cyanonitride" or a mixture of carbide and nitride may even be uncertain, though it differs from nitride in yielding the TiCl4 - CNCl compound when heated with chlorine.

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