coal tar

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Related to Coal-tar: coal-tar creosote, coal tar pitch

coal tar

n.
A viscous black liquid containing numerous organic compounds that is obtained by the destructive distillation of coal and used as a roofing, waterproofing, and insulating compound and as a raw material for many dyes, drugs, and paints.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

coal tar

n
(Elements & Compounds) a black tar, produced by the distillation of bituminous coal, that can be further distilled to yield benzene, toluene, xylene, anthracene, phenol, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

coal′ tar`


n.
a viscid black liquid obtained by distillation of coal, used in making dyes, drugs, and other synthetic compounds.
[1775–85]
coal′-tar`, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

coal tar

A thick, sticky, black liquid obtained by heating coal in the absence of air. It is used as a raw material for many dyes, drugs, and paints.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.coal tar - a tar formed from distillation of bituminous coalcoal tar - a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
tar, pitch - any of various dark heavy viscid substances obtained as a residue
naphthalene - a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

coal tar

ncatrame m minerale
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

coal tar

n alquitrán m de hulla
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
Some thinking they would catch the plague, dipped oakum in coal-tar, and at intervals held it to their nostrils.
Coal-tar pitch is a thick black liquid that remains after the distillation of coal tar.
The market was forced from its home of five years --an asphalt lot at 50 Kent St.--for the Summer 2016 season because city officials decided they should finally get around to excavating the 25 feet of toxic coal-tar in the soil beneath it, according to DNA info.
Meanwhile Punjab Chief Minister Muhammad Shahbaz Sharif has ordered crackdown against those selling substandard and cheap Iranian coal-tar for the construction of roads and directed that indiscriminate action should be taken under the law against such elements while vigorous action should also be taken against those smuggling Iranian coal-tar.
Chairing a meeting at Punajb House Islamabad, he was apprised that complaints have been received that some elements have been using substandard-smuggled coal-tar for building of roads in various parts.
Research detailed in a recent article in the journal Environmental Science & Technology, has found that Sealcoat made from a refined coal-tar pitch emulsion has about one thousand times more polycyclic aromatic hydrocarbons (PAHs) than regular asphalt emulsion.
Coal-tar pavement sealants might substantially increase children's PAH exposures.
Remediation of former manufactured gas plants and other coal-tar sites.
Anne LeHuray, a scientist with the Pavement Coatings Technology Council in Alexandria, Virginia, said the council recommended not applying coal-tar sealants within 48 hours of rain.
CHICAGO -- A topical coal-tar solution that doesn't smell, a user-friendly hydrogel patch, and supraerythemogenic phototherapy were among the innovative approaches to psoriasis discussed at the American Academy of Dermatology Academy's 2008 meeting.
BASF succeeded by commercializing the results of the chemical revolution led by scientists such as Liebig and Perkin who created artificial dyes out of materials such as coal-tar rather than plants and roots.