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Naphtha :: Naphtha (n.) One of several volatile inflammable liquids obtained by the distillation of certain carbonaceous materials and resembling the naphtha from petroleum; as, Boghead naphtha, from Boghead coal (obtained at Boghead, Scotland); crude naphtha, or light oil, from coal tar; wood naphtha, from wood, etc..

Asphaltum :: Asphaltum (n.) A composition of bitumen, pitch, lime, and gravel, used for forming pavements, and as a water-proof cement for bridges, roofs, etc.; asphaltic cement. Artificial asphalt is prepared from coal tar, lime, sand, etc..

Leucoline :: Leucoline (n.) A nitrogenous organic base from coal tar, and identical with quinoline. Cf. Quinoline..

Cryptidine :: Cryptidine (n.) One of the quinoline bases, obtained from coal tar as an oily liquid, C11H11N; also, any one of several substances metameric with, and resembling, cryptidine proper..

Chrysene :: Chrysene (n.) One of the higher aromatic hydrocarbons of coal tar, allied to naphthalene and anthracene. It is a white crystalline substance, C18H12, of strong blue fluorescence, but generally colored yellow by impurities..

Viridine :: Viridine (n.) A greenish, oily, nitrogenous hydrocarbon, C12H19N7, obtained from coal tar, and probably consisting of a mixture of several metameric compounds which are higher derivatives of the base pyridine..

Quinoline :: Quinoline (n.) A nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type..

Toluene :: Toluene (n.) A hydrocarbon, C6H5.CH3, of the aromatic series, homologous with benzene, and obtained as a light mobile colorless liquid, by distilling tolu balsam, coal tar, etc.; -- called also methyl benzene, phenyl methane, etc..

Fluoranthene :: Fluoranthene (n.) A white crystalline hydrocarbon C/H/, of a complex structure, found as one ingrdient of the higher boiling portion of coal tar..

Coridine :: Coridine (n.) A colorless or yellowish oil, C10H15N, of a leathery odor, occuring in coal tar, Dippel's oil, tobacco smoke, etc., regarded as an organic base, homologous with pyridine. Also, one of a series of metameric compounds of which coridine is a type..

Fluorene :: Fluorene (n.) A colorless, crystalline hydrocarbon, C13H10 having a beautiful violet fluorescence; whence its name. It occurs in the higher boiling products of coal tar, and is obtained artificially..

Picene :: Picene (n.) A hydrocarbon (C/H/) extracted from the pitchy residue of coal tar and petroleum as a bluish fluorescent crystalline substance.

Cresol :: Cresol (n.) Any one of three metameric substances, CH3.C6H4.OH, homologous with and resembling phenol. They are obtained from coal tar and wood tar, and are colorless, oily liquids or solids. [Called also cresylic acid.].

Pyrrol :: Pyrrol (n.) A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red..

Phenol :: Phenol (n.) A white or pinkish crystalline substance, C6H5OH, produced by the destructive distillation of many organic bodies, as wood, coal, etc., and obtained from the heavy oil from coal tar..

Pseudo-cumene :: Pseudo-cumene (n.) A hydrocarbon of the aromatic series, metameric with mesitylene and cumene, found in coal tar, and obtained as a colorless liquid..

Anthracene :: Anthracene (n.) A solid hydrocarbon, C6H4.C2H2.C6H4, which accompanies naphthalene in the last stages of the distillation of coal tar. Its chief use is in the artificial production of alizarin..

Paraffine :: Paraffine (n.) A white waxy substance, resembling spermaceti, tasteless and odorless, and obtained from coal tar, wood tar, petroleum, etc., by distillation. It is used as an illuminant and lubricant. It is very inert, not being acted upon by most of the strong chemical reagents. It was formerly regarded as a definite compound, but is now known to be a complex mixture of several higher hydrocarbons of the methane or marsh-gas series; hence, by extension, any substance, whether solid, liquid, or

Phenanthrene :: Phenanthrene (n.) A complex hydrocarbon, C14H10, found in coal tar, and obtained as a white crystalline substance with a bluish fluorescence..

Pyrene :: Pyrene (n.) One of the less volatile hydrocarbons of coal tar, obtained as a white crystalline substance, C16H10..

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