Coal tar pitch , 2018). Coal-tar pitch is the residue that remains after the distillation of coal tar, that is, the thick black liquid remaining after various oils are removed from coal tar for use in the manufacture of industrial and consumer products. An industry developed around distillation of coal tar to produce various products. Petroleum Pitch: What remains from the petroleum refining process is called pitch, which can be similar to bitumen but with differences due to their refining properties. It has medical and industrial applications, such as treating skin conditions and preserving railroad ties. Numerous studies, mostly case reports, have found that occupational exposure to coal tars or coal-tar pitches (coal-tar distillates) is associated with skin cancer, including scrotal cancer; workers in these studies have included patent-fuel (coal-briquette) workers, pitch loaders, workers in electrical trades, and optical-lens polishers (IARC 1985; 1987). Approximately half of the cohort had ever been exposed to coal tar pitch volatiles. Once the pitch is heated, chemicals vaporize and may be inhaled by workers. Find out how people are exposed to them and which cancers are associated with them. The tar predominantly contains a mixture of bi- and poly-condensed aromatic hydrocarbons and also compounds with heteroatoms in rings (predominantly nitrogen bases from the quinoline and acridine Coal tar pitch volatiles (CTPVs) are measured by passing workplace air through a sampling device and then analyzing the sample for the compounds of interest. orfxgp tfti swwjxt aoywu edho tlnt wwcgpa isufsqs stljfs igg