What is a Coal Tar?

Coal tar is a viscous, dark brown or black liquid obtained by the dry distillation of coal. Its chemical composition is complex and contains a wide range of organic compounds, including aromatic hydrocarbons, alkaloids, aldehydes, and ketones. These components make coal tar useful in various industrial applications. Historically, coal tar has been used in the paving of roads, the preservation of railroad ties, and the treatment of wood for protection against rot. In modern applications, it is also used in pharmaceuticals and cosmetics, particularly in the treatment of skin conditions like psoriasis and seborrheic dermatitis. Coal tar preparations have been recognized for their effectiveness in managing these skin diseases.

However, coal tar contains compounds that are considered carcinogenic, so caution is necessary when handling it. Safety measures should be taken to avoid direct skin contact, and appropriate protective gear should be used.

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