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单词 naphthalene
释义

Definition of naphthalene in English:

naphthalene

noun ˈnafθəliːn
mass nounChemistry
  • A volatile white crystalline compound produced by the distillation of coal tar, used in mothballs and as a raw material for chemical manufacture.

    A bicyclic aromatic hydrocarbon; chemical formula: C₁₀H₈

    Example sentencesExamples
    • The 500th report is on ordinary naphthalene, the principle ingredient in mothballs and the familiar odor in millions of closets filled with winter's woolens.
    • Pyrene can be absorbed through the skin, the respiratory tract, and the gastrointestinal tract, whereas naphthalene is mainly absorbed by inhalation.
    • Common aromatic compounds other than benzene include toluene, naphthalene, and anthracene, all of which are present in coal tar or creosote.
    • In one method, naphthalene is oxidized with vanadium pentoxide to give phthalic anhydride.
    • The raw materials for today's dyes are mainly aromatic hydrocarbons: benzene, toluene, naphthalene, anthracene, pyrene, and others.

Derivatives

  • naphthalic

  • adjective nafˈθalɪk
    Chemistry
    • Single crystals of poly (naphthalic anhydride) have been grown using our confined thin film melt polymerization technique.
      Example sentencesExamples
      • The anhydride of naphthalic acid was identified as a urinary metabolite in rats treated orally with acenaphthene.

Origin

Early 19th century: from naphtha + -ene, with the insertion of -l- for ease of pronunciation.

 
 

Definition of naphthalene in US English:

naphthalene

noun
Chemistry
  • A volatile white crystalline compound produced by the distillation of coal tar, used in mothballs and as a raw material for chemical manufacture.

    A bicyclic aromatic hydrocarbon; chemical formula: C₁₀H₈

    Example sentencesExamples
    • Pyrene can be absorbed through the skin, the respiratory tract, and the gastrointestinal tract, whereas naphthalene is mainly absorbed by inhalation.
    • In one method, naphthalene is oxidized with vanadium pentoxide to give phthalic anhydride.
    • The 500th report is on ordinary naphthalene, the principle ingredient in mothballs and the familiar odor in millions of closets filled with winter's woolens.
    • Common aromatic compounds other than benzene include toluene, naphthalene, and anthracene, all of which are present in coal tar or creosote.
    • The raw materials for today's dyes are mainly aromatic hydrocarbons: benzene, toluene, naphthalene, anthracene, pyrene, and others.

Origin

Early 19th century: from naphtha + -ene, with the insertion of -l- for ease of pronunciation.

 
 
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更新时间:2024/12/23 8:47:16