Coal tar

Since the Industrial revolution, bituminous materials are very much preferred in building and road constructions. These materials are composed of highly molecular weight hydrocarbons, and soluble in carbon disulfide. There are many grades of bitumen, each of which exhibits different characteristics. The performance of each grade of bitumen depends largely on its physical properties like […] The post Difference Between Coal Tar and Asphalt first appeared on Difference Between.

Coal tar is derived from coal. It is a byproduct of the production of coke, a solid fuel that contains mostly carbon, and coal gas.

Coal Solid Liquid Gas Coke Coal tar Coal gas Used to Make Iron and Other Metals Used to Make Dyes Drugs Perfumes Used as fuel in industries

Coal Tar This product is listed among the "dangerous goods" identified by the UN. It's also labelled "Allura Red AC" and used to dye certain candy, soda and other food products red

Advantages: - It's easily transported to many areas in the world - Inexpensive to buy on open market due to large reserves and easy access ability - Coal is the least expensive fossil fuel because it is rather simple to mine - Coal powered generation scales well, which makes it possible to build a variety of sizes of generation plants -Since coal is a fossil fuel, it can be used to build power stations almost anywhere as long as there are large amounts of it Disadvantages: - Coal must be…

Bitumen is the heavy end (i.e. higher molecular weight) residue from the fractionation of crude oil. When you have extracted such things as fuels, fuel oils, lubricating oils and waxes from the crude oil, what is left is a thick sticky black liquid, consistency anything from "treacle" up to a firm glassy amorphous sold. That is bitumen. Tar is similar, but is not extracted from crude oil; it is extracted from coal. Asphalt is a mixture of bitumen and aggregates (inorganic heavy fillers…

While burning coal today causes Earth to overheat, about 300 million years ago, the formation of coal brought the planet close to global glaciation. For the first time, scientists show the massive effect in a study to be published in the Proceedings of the National Academy of Sciences.

Coal Tar, illustration by Laurent Ferrante

Coal tar treated wooden plank showing weathering. - Non-Commercial License - No Attribution Required

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