aromatic tar

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• Tar (tobacco residue) — Tar is the common name for the resinous partially combusted particulate matter produced by the burning of tobacco, cannabis, and other plant material in the act of smoking. Tar is purportedlyFact|date=August 2008 the most destructive component in …   Wikipedia

• Aromatic hydrocarbon — Arene redirects here. For other uses, see Arene (disambiguation). An aromatic hydrocarbon or arene[1] (or sometimes aryl hydrocarbon)[2] is a hydrocarbon with alternating double and single bonds between carbon atoms. The term aromatic was… …   Wikipedia

• aromatic compound — Chem. an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor. [1865 70] * * * Any of a large class of organic compounds whose molecular structure includes one or more… …   Universalium

• Coal tar — is a brown or black liquid of extremely high viscosity, which smells of naphthalene and aromatic hydrocarbons. 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 …   Wikipedia

• Polycyclic aromatic hydrocarbon — An illustration of typical polycyclic aromatic hydrocarbons. Clockwise from top left: benz(e)acephenanthrylene, pyrene and dibenz(ah)anthracene …   Wikipedia

• coal tar — noun a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds • Hypernyms: ↑pitch, ↑tar • Substance Meronyms: ↑naphthalene * * * noun : tar obtained by the destructive distillation of …   Useful english dictionary

• Pine tar — is a sticky material produced by the high temperature carbonization of pine wood in anoxic conditions (dry distillation or destructive distillation). The wood is rapidly decomposed by applying heat and pressure in a closed container; the primary… …   Wikipedia

• Sydney Tar Ponds — The Sydney Tar Ponds are a hazardous waste site on Cape Breton Island, Nova Scotia, Canada.Located on the eastern shore of Sydney Harbour in the former city of Sydney (now amalgamated into the Cape Breton Regional Municipality), the Tar Ponds… …   Wikipedia

• coal tar creosote — creosote obtained by high temperature carbonization of bituminous coal; it is a brown to black, oily liquid, a mixture of aromatic hydrocarbons, tar acids, and tar bases; mainly used as a wood preservative. It is toxic by skin contact, ingestion …   Medical dictionary

• 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,… …   The Collaborative International Dictionary of English

• tarragon — /tar euh gon , geuhn/, n. 1. an Old World plant, Artemisia dracunculus, having aromatic leaves used for seasoning. 2. the leaves themselves. Also called estragon. [1530 40; earlier taragon < MF targon, var. of tarc(h)on < ML < MGk tarchón < Ar… …   Universalium