a colorless, pleasant-smelling benzene derivative, C10H14, occurring in the volatile oil of the common cumin, Cuminum cyminum, and existing in three forms, the ortho, meta, and para isomers.
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Terebenthene belongs to the benzene or aromatic series, which can be shown from its connection with cymene.
Cymene is methylpropyl-benzene, and can be made from terpenes by removing two atoms of H.
By distillation with zinc chloride, cymene and other products are produced.
Besides a cymene and a toluene, which have already been shown to exist in rosin spirit, metaxylene was found to be present.