单词	ligroin
释义	ligroin /ˈlɪɡrəʊɪn / noun [mass noun] Chemistry A volatile hydrocarbon mixture obtained from petroleum, used as a solvent.The crude crystals are recrystallized from a mixture of toluene and ligroin by use of decolorizing charcoal.... Ligroin is a common solvent used in reactions which consist mostly of mixed hexanes. 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. Origin Late 19th century: of unknown origin.
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