Coal tar is a known carcinogen derived from burning coal. It is a complex mixture of hundreds of compounds, many of which are polycyclic aromatic hydrocarbons (PAHs) , . Coal tar is used in food, textiles, cosmetics and personal care …Coal-Tar Pitch - an overview | ScienceDirect TopicsMototsugu Sakai, in Carbon Alloys, 2003. 4.2.1 Test Materials. Some of the properties of the initial coal-tar pitch include softening point (ring and ball method) of 101°C, toluene- and quinoline-insoluble components of 14.6 wt% and 0.6 wt% respectively, and a carbon yield of 53.3 wt% during carbonization. A molded coal-tar pitch disk (12 mm in diameter, 5 mm in height, and …Coal Tar Preparations - Psoriasis AssociationCoal tar is a thick, heavy oil that has been used to treat psoriasis for hundreds of years. It is thought to have anti-inflammatory and anti-scaling properties that are useful in treating plaque psoriasis. The treatments are topical (applied to skin) and come in lotion, cream, ointment, shampoo, and bath additive forms.