Chemical elements
  Beryllium
    Isotopes
    Energy
    Production
    Application
    Physical Properties
    Chemical Properties
      Beryllium Hydride
      Beryllium Fluoride
      Beryllium Chloride
      Beryllium Bromide
      Beryllium Iodide
      Beryllium Double Halides
      Beryllium Oxyhalides
      Beryllium Oxide
      Beryllium Hydroxide
      Beryllium Beryllate
      Beryllium Peroxide
      Beryllium Sulphide
      Beryllium Sulphide
      Beryllium Double Sulphates
      Beryllium Sulphite
      Beryllium Thiosulphate
      Beryllium Selenate
      Beryllium Chromate
      Beryllium Hydride
      Beryllium Chromite
      Beryllium Molybdate
      Beryllium Nitride
      Beryllium Azide
      Beryllium Nitrate
      Beryllium Phosphates, Phosphite, and Hypophosphite
      Beryllium Hypophosphate
      Beryllium Arsenates
      Beryllium Arsenite
      Beryllium Antimonate
      Beryllium Hydride
      Beryllium Vanadates
      Beryllium Niobate
      Beryllium Carbide
      Beryllium Borocarbide
      Beryllium Carbonate
      Beryllium Acetate
      Beryllium Oxalates
      Beryllium Cyanide
      Beryllium Platinocyanide
      Beryllium Silicates
      Beryllium Silicotungstate
      Beryllium Borate
      Beryllium Aluminate

Beryllium Iodide, BeI2






Beryllium iodide, BeI2, which is very similar to the chloride, occurs in colourless crystals which melt at about 510° C., boil between 585° C. and 595° C., and sublime very perceptibly below their melting-point. Like the chloride and bromide it forms compounds with ammonia, organic bases, and ether. It is insoluble in most organic solvents except alcohol. It can be sublimed in a current of dry carbon dioxide, hydrogen, or nitrogen. Water reacts violently with it. with the evolution of hydrogen iodide. This sensitiveness to water makes beryllium iodide very unstable in moist air, and the salt is, in general, very reactive towards chemical reagents; oxygen or air, for example, readily decompose it, and it takes fire when heated to near redness in oxygen.

Beryllium iodide was first prepared by acting on beryllium with iodine; but our accurate knowledge of it is largely due to Lebeau, who prepared it in considerable quantity by heating beryllium carbide to about 700° C. in a current of hydrogen iodide containing iodine vapour.


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