Coal tar the European Chemicals Agency. The exact mechanism of action is unknown. Coal tar is a complex mixture of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. It is a keratolytic agent, which reduces the growth rate of skin cells and softens the skin's keratin. Coal tar is produced through thermal destruction (pyrolysis) of coal. Its composition varies with the process and type of coal used – lignite, bituminous or anthracite. Coal tar contains approximately 10,000 chemicals, of which only about 50% have been identified. Components include polycyclic aromatic hydrocarbons (4-rings: chrysene, fluoranthene, pyrene, triphenylene, naphthacene, benzanthracene, 5-rings: picene, benzo[a]pyrene, benzo[e]pyrene,
The Carbon Principles The Carbon Principles The Carbon Principles are a series of guidelines established by three leading Wall Street banks — Citigroup Inc., JP Morgan Chase, and Morgan Stanley — to assess the risks in financing electric power projects in terms of climate change. These principles call for "enhanced diligence" in evaluating electric power industry borrowers in terms of their use of energy efficiency; renewable and low-carbon distributed energy technologies; and conventional and advanced generating technologies. These guidelines were announced in February 2008 to address the increasing public concern over the plans to create over one hundred coal power plants in the