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  2. CAS Number10028-15-6
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    Ozone - Wikipedia

    • Ozone (or trioxygen) is an inorganic molecule with the chemical formula O 3. It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2, breaking down in the lower atmosphere to O 2 (dioxygen). Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges wit… See more

    Nomenclature

    The trivial name ozone is the most commonly used and preferred IUPAC name. The systematic names 2λ -trioxidiene and catena-trioxygen, valid IUPAC names, are constructed according to the substitutive and additive no… See more

    History

    In 1785, Dutch chemist Martinus van Marum was conducting experiments involving electrical sparking above water when he noticed an unusual smell, which he attributed to the electrical reactions, failing to realize th… See more

    Physical properties

    Ozone is a colourless or pale blue gas, slightly soluble in water and much more soluble in inert non-polar solvents such as carbon tetrachloride or fluorocarbons, in which it forms a blue solution. At 161 K (−112 °C; −… See more

    Structure

    According to experimental evidence from microwave spectroscopy, ozone is a bent molecule, with C2v symmetry (similar to the water molecule). The O–O distances are 127.2 pm (1.272 Å). The O–O–O angle is 116.78°. Th… See more

    Reactions

    Ozone is among the most powerful oxidizing agents known, far stronger than O2. It is also unstable at high concentrations, decaying into ordinary diatomic oxygen. Its half-life varies with atmospheric conditions such as te… See more

    Spectroscopic properties

    Ozone is a bent triatomic molecule with three vibrational modes: the symmetric stretch (1103.157 cm ), bend (701.42 cm ) and antisymmetric stretch (1042.096 cm ). The symmetric stretch and bend are weak absorbers, … See more

    Ozone in Earth's atmosphere

    The standard way to express total ozone levels (the amount of ozone in a given vertical column) in the atmosphere is by using Dobson units. Point measurements are reported as mole fractions in nmol/mol (parts per b… See more

     
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