Coal tar is a brown or black liquid of extremely high viscosity. Coal tar is among the by-products when coal is carbonized to make coke or gasified to make coal gas. Coal tars are complex and variable mixtures of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. ==Applications== ===Pavement sealcoat=== Coal tar is incor...
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• A thick, black, tarry liquid, obtained by the distillation of bituminous coal in the manufacture of illuminating gas; used for making printer`s ink, black varnish, etc. It is a complex mixture from which many substances have been obtained, especially hydrocarbons of the benzene or aromatic series.
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principal liquid product resulting from the carbonization of coal, i.e., the heating of coal in the absence of air, at temperatures ranging from ... [3 related articles]
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http://www.britannica.com/eb/a-z/c/101
A dense black viscous liquid produced by the destructive distillation of coal; coke and coal gas are other products. Fractional distillation of coal tar produces a wide variety of industrially important substances. These include asphalt and creosote, a wood preservative; also various oils used as fu...
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A viscous liquid mixture of hydrocarbon compounds, derived, along with coke, from the destructive distillation of coal.
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<pharmacology> A byproduct obtained during the breakdown of bituminous coal used in the treatment of some skin diseases (for example psoriasis). ... (27 Sep 1997) ...
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This is tar that is produced from coal.
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Coal' tar` A thick, black, tarry liquid, obtained by the distillation of bituminous coal in the manufacture of illuminating gas; used for making printer's ink, black varnish, etc. It is a complex mixture from which many substances have been obtained, especially hydrocarbons of the benzene or aromatic series. » Among its impo...
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http://www.encyclo.co.uk/webster/C/99
Type: Term Pronunciation: kōl tar Definitions: 1. A by-product obtained during the destructive distillation of bituminous coal; a dark semisolid of characteristic naphthalenelike odor and a sharp, burning taste; used to treat skin diseases.
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http://www.medilexicon.com/medicaldictionary.php?t=18529
Coal-tar or gas-tar is a thick black viscous liquid produced by the destructive distillation of coal for the manufacture of illuminating gas, consisting principally of oily hydrocarbons. It passes over with the gas into the condensers along with ammonia liquor, but being heavier than the latter, it is easily separated from it when the whole is allo...
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Adark brown to black, semi-solid hydrocarbon obtained as residue from the partial evaporation or distillation of coal tar.
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[
n] - a tar formed from distillation of bituminous coal
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A dark brown to black cementitious material produced by the destructive distillation of bituminous coal.
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noun a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
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Black oily material resulting from the destructive distillation of bituminous coal. The fractional distillation of coal tar yields light oil, middle oil, heavy oil, and anthracene oil; the residue is called pitch. On further distillation a large number of substances are obtained, about 200 of which have been isolated. They are used as dyes and ...
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https://www.encyclo.co.uk/local/21221
a thick, black, viscid liquid formed during the distillation of coal, that upon further distillation yields compounds, as benzene, anthracene, and phenol, from which are derived a large number of dyes, drugs, and other synthetic compounds, and that yields a final residuumwhich is used chiefly in making pavements.
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https://www.infoplease.com/dictionary/coal-tar
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