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单词 chloral
释义

Definition of chloral in English:

chloral

noun ˈklɔːralˈklɔrəl
mass nounChemistry
  • 1A colourless, viscous liquid made by chlorinating acetaldehyde.

    Chemical formula: CCl₃CHO

    Example sentencesExamples
    • DDT is produced from the chlorobenzene and trichloroethanal (trichloroacetaldehyde or chloral), which react in the presence of concentrated sulfuric acid.
    • When dissolved in water, trichloroethanal exists primarily in its hydrate form, chloral hydrate (commonly known as ‘knock-out drops’).
    • More preferably, the halogen-containing aldehyde, acetal or hemiacetal is selected from trichloroethanal, 2,2, 2-trichloro - 1-ethoxy ethanol and mixtures thereof.
    1. 1.1
      short for chloral hydrate
      Example sentencesExamples
      • Depressed about losing Lucy, he considers taking chloral to sleep, but decides against it.
      • Up to his neck in the reputedly healing waters, Daudet read Montaigne; and in private consumed huge amounts of morphine, chloral and bromide in an attempt to palliate his excruciating pains.
      • He had given up painting in 1878 and existed in the bohemian squalor of his Chelsea mansion, in a state of deep melancholy, sustained by a diet of 180 grains of chloral a day, washed down with whisky.
      • If chlorine gas is bubbled through ethanal, the hydrogen atoms of the methyl group are replaced by chlorine atoms to give chloral.

Origin

Mid 19th century: from French, blend of chlore 'chlorine' and alcool 'alcohol'.

 
 

Definition of chloral in US English:

chloral

nounˈklɔrəlˈklôrəl
Chemistry
  • 1A colorless, viscous liquid made by chlorinating acetaldehyde.

    Alternative name: trichloroethanal; chemical formula: CCl₃CHO

    Example sentencesExamples
    • More preferably, the halogen-containing aldehyde, acetal or hemiacetal is selected from trichloroethanal, 2,2, 2-trichloro - 1-ethoxy ethanol and mixtures thereof.
    • When dissolved in water, trichloroethanal exists primarily in its hydrate form, chloral hydrate (commonly known as ‘knock-out drops’).
    • DDT is produced from the chlorobenzene and trichloroethanal (trichloroacetaldehyde or chloral), which react in the presence of concentrated sulfuric acid.
    1. 1.1
      short for chloral hydrate
      Example sentencesExamples
      • Up to his neck in the reputedly healing waters, Daudet read Montaigne; and in private consumed huge amounts of morphine, chloral and bromide in an attempt to palliate his excruciating pains.
      • Depressed about losing Lucy, he considers taking chloral to sleep, but decides against it.
      • He had given up painting in 1878 and existed in the bohemian squalor of his Chelsea mansion, in a state of deep melancholy, sustained by a diet of 180 grains of chloral a day, washed down with whisky.
      • If chlorine gas is bubbled through ethanal, the hydrogen atoms of the methyl group are replaced by chlorine atoms to give chloral.

Origin

Mid 19th century: from French, blend of chlore ‘chlorine’ and alcool ‘alcohol’.

 
 
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更新时间:2025/1/9 9:08:11