Nitrogen dioxide

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  • nitrogen dioxide
definition
  • A reddish-brown gas; it exists in varying degrees of concentration in equilibrium with other nitrogen oxides; used to produce nitric acid.
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Abstract from DBPedia
    Nitrogen dioxide is a chemical compound with the formula NO2. It is one of several nitrogen oxides. NO2 is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year for use primarily in the production of fertilizers. At higher temperatures it is a reddish-brown gas. It can be fatal if inhaled in large quantities. Nitrogen dioxide is a paramagnetic, bent molecule with C2v point group symmetry. It is included in the NOx family of atmospheric pollutants.

    二酸化窒素(にさんかちっそ、英: nitrogen dioxide)は、NO2 という化学式で表される窒素酸化物で、常温・常圧では赤褐色の気体または液体である。窒素の酸化数は+4。窒素と酸素の混合気体に電気火花を飛ばすと生成する。環境汚染の大きな要因となっている化合物である。赤煙硝酸の赤色は二酸化窒素の色に由来している。大気中の濃度は、約0.027 ppm。二酸化窒素は常磁性の、C2v対称性を持つ曲がった分子である。

    (Source: http://dbpedia.org/resource/Nitrogen_dioxide)