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词汇 ligroin
释义

Definition of ligroin in English:

ligroin

noun ˈlɪɡrəʊɪnˈliɡrōwən
mass nounChemistry
  • A volatile hydrocarbon mixture obtained from petroleum, used as a solvent.

    〔化〕石油英,石油醚,轻石油

    Example sentencesExamples
    • Among other non-hydrophilic organic solvents mentioned above, benzene and ligroin prove to be particularly desirable for practical use.
    • Ligroin is a common solvent used in reactions which consist mostly of mixed hexanes.
    • When nothing is known about the mixture being separated, the column is prepared in ligroin or hexane, the least polar of the eluting solvents.
    • Measure 3 ml of a 3% aqueous solution of bromine into each of three test tubes and add 1 ml portions of purified ligroin to two of the tubes and 1 ml of cyclohexene to the third.
    • The crude crystals are recrystallized from a mixture of toluene and ligroin by use of decolorizing charcoal.

Origin

Late 19th century: of unknown origin.

Definition of ligroin in US English:

ligroin

nounˈliɡrōwən
Chemistry
  • A volatile hydrocarbon mixture obtained from petroleum, used as a solvent.

    〔化〕石油英,石油醚,轻石油

    Example sentencesExamples
    • The crude crystals are recrystallized from a mixture of toluene and ligroin by use of decolorizing charcoal.
    • Among other non-hydrophilic organic solvents mentioned above, benzene and ligroin prove to be particularly desirable for practical use.
    • Measure 3 ml of a 3% aqueous solution of bromine into each of three test tubes and add 1 ml portions of purified ligroin to two of the tubes and 1 ml of cyclohexene to the third.
    • Ligroin is a common solvent used in reactions which consist mostly of mixed hexanes.
    • When nothing is known about the mixture being separated, the column is prepared in ligroin or hexane, the least polar of the eluting solvents.

Origin

Late 19th century: of unknown origin.

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