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  1. Nitrogen dioxide - Wikipedia

    • Nitrogen dioxide is a chemical compound with the formula NO2. One of several nitrogen oxides, nitrogen dioxide is a reddish-brown gas. It is a paramagnetic, bent molecule with C2v point group symmetry. Industrially, NO2 is an intermediate in the synthesis of nitric acid, millions of tons of which are produced each year, primarily for the production of fertilizers. Nit… 展开

    Properties

    Nitrogen dioxide is a reddish-brown gas with a pungent, acrid odor above 21.2 °C (70.2 °F; 294.3 K) and becomes a yellowish-brown liquid below 21.2 °C (70.2 °F; 294.3 K). It forms an equilibrium with its dimer展开

    Preparation

    Industrially, nitrogen dioxide is produced and transported as its cryogenic liquid dimer, dinitrogen tetroxide. It is produced industrially by the oxidation of ammonia, the Ostwald Process. This reaction is the first step in the p… 展开

    PubChem3032552
    ChemSpider2297499
    Gmelin976
    Selected reactions

    Nitric acid decomposes slowly to nitrogen dioxide by the overall reaction:
    4 HNO3 → 4 NO2 + 2 H2O + O2
    The nitrogen dioxide so formed confers the characteristic yellow color often exhibited by this acid. How… 展开

    Uses

    NO2 is used as an intermediate in the manufacturing of nitric acid, as a nitrating agent in the manufacturing of chemical explosives, as a polymerization inhibitor for acrylates, as a flour bleaching agent, and as a room tempe… 展开

    Environmental presence

    Nitrogen dioxide typically arises via the oxidation of nitric oxide by oxygen in air (e.g. as result of corona discharge):
    2 NO + O2 → 2 NO2
    NO2 is introduced into the environment by natural causes, i… 展开

    Toxicity

    NO2 diffuses into the epithelial lining fluid (ELF) of the respiratory epithelium and dissolves. There, it chemically reacts with antioxidant and lipid molecules in the ELF. The health effects of NO2 are caused by the reaction prod… 展开

    Environmental effects

    Interaction of NO2 and other NOx with water, oxygen and other chemicals in the atmosphere can form acid rain which harms sensitive ecosystems such as lakes and forests. Elevated levels of NO 2 can also harm vegetation… 展开

     
  1. 二氧化氮 - 维基百科,自由的百科全书

  2. Nitrogen dioxide - Simple English Wikipedia, the free encyclopedia

  3. Nitrogen oxide - Wikipedia

  4. 二氧化氮 - 維基百科,自由的百科全書 - zh.wikipedia.org

  5. NOx - Wikipedia

  6. Nitrogen Dioxide | NO2 | CID 3032552 - PubChem

    Nitrogen Dioxide is found in the atmosphere as a key ingredient in photochemical formation of smog and acid rain, Nitrogen Dioxide is a poisonous gas that forms during combustion. Toxic at high concentrations, it reacts with moisture in the …

  7. 一氧化二氮 - 维基百科,自由的百科全书

  8. Nitrogen Oxides - Center for Science Education

    Nitric oxide (NO) and nitrogen dioxide (NO 2) are two gases whose molecules are made of nitrogen and oxygen atoms. These nitrogen oxides contribute to the problem of air pollution, playing roles in the formation of both smog and acid …

  9. Nitrogen dioxide - Wikiwand

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