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.
Late 19th century: of unknown origin.
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