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flammable liquids, C6H4.(CH3)2, being dimethyl benzenes, and are called respectively orthoxylene, metaxylene, and paraxylene. Called also xylol.

as a natural product of distillation of certain coals; also, any one several isomers of hexylene proper. Called also hexene.

That variety of xylene, or dimethyl benzene, in which the two methyl groups occupy the meta position with reference to each other. It is a colorless inf

That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.

uid by the distillation of camphor with zinc chloride. It is one of the three metamers of xylene. Cf. Metamer, and Xylene.

A liquid hydrocarbon of the terpene series extracted from the seeds of a Japanese prickly ash (Xanthoxylum pipertium) as an aromatic oil.

Same as Hexylene.

forms of the same substance, or of different substances having the same composition; as, xylene has three metamers, viz., orthoxylene, metaxylene, and paraxylene.

nucleus are opposite, or in the respective positions 1 and 4; 2 and 5; or 3 and 6, as paraxylene; paroxybenzoic acid. Cf. Ortho-, and Meta-. Also used adjectively.

hree possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene.

Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.C6H3.OH.

Pertaining to, derived from, or related to, xylene; specifically, designating any one of several metameric acids produced by the partial oxidation of mesitylene and pseudo-cumene.

ny one of six metameric hydrocarbons, (CH3)2.C6H3.NH2, resembling aniline, and related to xylene. They are liquids, or easily fusible crystalline substances, of which three are derived from metaxylene, two from orthoxylene, and one from paraxylene. They are called the amido xylenes.

Same as Xylene.

A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; -- called also betaorcin.

Any one of three metameric radicals which are characteristic respectively of the three xylenes.

Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.