Chemical elements
    Physical Properties
      Liquid Oxygen
      Solid Oxygen
    Chemical Properties
    Hydrogen peroxide

Solid Oxygen

By rapid evaporation and consequent cooling, or by cooling in liquid hydrogen, liquid oxygen can be converted into a bluish-white solid oxygen of density 1.4256 at -252.5° C. and melting at -219° C. under a vapour pressure of 0.9 mm. The solid exhibits allotropy, α, β, and γ forms being recognised. The transition between the α and β forms occurs at -249.5° C. and between the and y forms at -230.5° C.

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