| 释义 |
Definition of naphthalene in English: naphthalenenoun 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. 〔化〕萘 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.
Derivativesadjective 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.
OriginEarly 19th century: from naphtha + -ene, with the insertion of -l- for ease of pronunciation. Definition of naphthalene in US English: naphthalenenoun Chemistry A volatile white crystalline compound produced by the distillation of coal tar, used in mothballs and as a raw material for chemical manufacture. 〔化〕萘 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.
OriginEarly 19th century: from naphtha + -ene, with the insertion of -l- for ease of pronunciation. |