You may have heard you can use coal tar for psoriasis. It’s very safe and effective. No single coal tar product is best. Here’s what you should know about buying and using coal tar.

Crude coal tar has a strong and unpleasant smell — dermatologists do not often use it.However, people can find a more refined version of the product in shampoos, creams, gels, soaks, and lotions.

Food colourings not actually based on coal tar. Coal tar, the black viscous liquid left over when coal is cooked to make coke, became the source for scientific experimentation around 150 years ago ...

COAL TAR VS. ASPHALT "It does what customers want it to do," she says, adding that they pick coal tar products over asphalt ones 85% to 90% of the time when both are offered.

Virtually all producers of refined coal tar sealer encountered shortages or delays in RT-12 supply last year, resulting in shortages or delivery delays of refined coal tar sealer to contractors.

Coal tar sealant is applied at a test site at the University of Austin in Texas, where it was studied for a year. University of Austin. May 5, 2011, 2:09 PM EDT / Source: InvestigateWest.

This article was originally published with the title “ Coal Tar and its Products as Preservatives for Wood ” in Scientific American Magazine Vol. 20 No. 24 (June 1869), p. 374 doi:10.1038 ...

Coal tar polluting the bottom of the Congaree River has been the source of concern for years. SCE&G, a division of Dominion Energy, is working on a plan to clean up the toxic muck. Tim Dominick ...

Coal tar polluting the bottom of the Congaree River has been the source of concern for years. SCE&G, a division of Dominion Energy, is working on a plan to clean up the toxic muck. Tim Dominick ...

Coal-tar sealants on blacktop parking lots and driveways are the primary source of toxic chemicals known as PAHs found in muck at the bottom of Milwaukee-area waterways, according to a new study.

In the 1990s, coal tar was discovered in Greenville's Newtown neighborhood. While the state takes on years of cleanup, residents want to be involved.

A small amount of coal tar was left in other, less accessible parts of the river, according to Dominion. Overall, the coal tar was scattered over an 11-to-14-acre area.