coal tar: [noun] tar obtained by distillation of bituminous coal and used especially as an industrial fuel, in making dyes, and in the topical treatment of skin disorders.
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In 1865, Friedrich Engelhorn () founded Badische Anilin und SodaFabrik AG (BASF). The company produced coal tar dyes and precursors, gaining a leading position in the world dye market within only a few decades. The demand for dyes was strong, reflecting soaring population growth, matched by the textile industry.
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Coal gas, also known as a gaseous mixture, is a fuel made up of hydrogen, methane, and carbon monoxide produced by destructive distillation (continuous heating in the absence of air) of bituminous coal. Coal is mostly made up of carbon, with varying proportions of additional elements such as hydrogen, sulphur, oxygen, and nitrogen.
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For color additives, the 1938 FDC Act mandated the listing of those coaltar colors (other than coaltar hair dyes) that were "harmless and suitable" for use in foods, drugs, and cosmetics.
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Coal tar is a complex hydrocarbon mixture produced by thermal destruction (pyrolysis) of coal, typically a dark viscous liquid or semisolid with a smoky or naphthenic odor. The composition of coal tar will be influenced by the process used for pyrolytic distillation as well as by the original composition of the coal; however, all coal tars will ...
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Excerpt from ERG Guide 154 [Substances Toxic and/or Corrosive (NonCombustible)]: SMALL FIRE: Dry chemical, CO2 or water spray. LARGE FIRE: Dry chemical, CO2, alcoholresistant or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.
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(1) Coal tar, to 5 percent. When a coal tar solution, derivative, or fraction is used as the source of the coal tar, the labeling shall specify the identity and concentration of the coal tar source used and the concentration of the coal tar present in the final product. (2) Salicylic acid, to 3 percent.
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Dyes from Coal Tar Products. June 5, 1858. Four years ago, F. Grace Calvert, an eminent English chemist, made the extraordinary statement before the Society of Arts that "ere long, some valuable ...
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The fractional distillation of coal tar gives many chemical substances which are used in the preparation of dyes, explosives, paints, synthetics fibers, drugs, and pesticides. Some of these chemical substances are benzene, toluene, phenol and aniline. Naphthalene balls used to repel moth and other insects are also obtained from coal tar.
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Colour: Black or dark brown (Singh, Goyal and K aur, 2015) ... The coal tar was collected by pyrolysis process of coal obtained from PT Kaltim Prima Coal. The experiments typically occurred at the ...
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It is a black, viscous, sometimes semisolid, fluid of peculiar smell, which is condensed together with aqueous 'gasliquor' (ammoniacal liquor), when the volatile products of the carbonization of coking coal are cooled down. It is acidic in nature and is water insoluble.
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The derivation of commercial naphthalene by rectification is a possible approach in coaltar processing. Naphthalene is widely used in chemical synthesis for the production of phthalic anhydride, superplasticizers, and intermediate products such as Cleve's acids in dye production. The quality of the naphthalene derived from petroleum is markedly higher than that of coaltar naphthalene ...
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The introduction in 1894 of Vidal black, and the enormous extension of the group of "sulphide" dyestuffs which shortly followed, provided the cotton dyer with a class of cheap colouring matters of...
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Coaltar colors are also called "syntheticorganic" colors. That's because, to a chemist, a "synthetic" compound is one formed from simpler compounds and an "organic" compound is one that...
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Creosote (Coal Tar Creosote and Wood Creosote) Kester, in Encyclopedia of Toxicology (Third Edition), 2014 Regulation. Coal tar creosote is included in the EPA and Organisation for Economic Cooperation and Development high production volume programs. It is listed as a Resource Conservation and Recovery Act hazardous waste (U051), and has a reportable quantity of 1 pound under the ...
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Manufacturing process. Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. It is a black, viscous liquid composed primarily of a complex mixture of condensedring aromatic hydrocarbons. It may contain phenolic compounds, aromatic nitrogen bases and their alkyl ...
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Some Basic Requirements. If your product (except coaltar hair dyes) contains a color additive, by law [FDC Act, Sec. 721; 21 379e; 21 CFR Parts 70 and 80] you must adhere to requirements for:
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The steam is fed into the gasifier at a rate of 27 kg/s at 180°C and 5 bar of pressure. The product contains dry gas, condensable moisture, and tar. The tar production rate is kg/s and is analyzed to contain 85% carbon and 15% hydrogen by weight. The heating value of the tar is 42,000 kJ/kg.
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One can produce a tarlike substance from corn stalks by heating them in a microwave oven. This process is known as pyrolysis.. Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive can be produced from coal, wood, petroleum, or peat.. Mineral products resembling tar can be produced ...
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Both coal gas and coke were derived from burning coal at high temperatures in the absence of oxygen, a process that left behind a thick, smelly brown liquid that was called coal tar...
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Coal Tar Epoxy Black V157 . Benjamin Moore Co., 101 Paragon Drive, Montvale, NJ 07645 Tel: Fax: M72 V157 EN 080118 ©2017, 2018Benjamin Moore Co. Benjamin Moore and the triangle "M" symbol are registered trademarks licensed to Benjamin Moore Co.
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Cannel coal of the Pennsylvanian subperiod from NE Ohio used to produce coal oil. Coal oil is a shale oil obtained from the destructive distillation of cannel coal, mineral wax, or bituminous shale, once used widely for illumination.. Chemically similar to the more refined, petroleumderived kerosene, it consists mainly of several hydrocarbons of the alkane series, with 10 to 16 carbon atoms ...
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premarket approval as drugs, except for color additives. 10. Makeup products with sunscreen are treated as both cosmetics and drugs. 11. Most hair dyes on the market belong to a class called . coaltar. The term coaltar colors dates to the time when coloring materials were byproducts of the coal industry, though most are now made from petroleum.
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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