The Industrial Applications of Coal-Tar Products

Coal tars and coal tar pitches.

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). A 1946 study in the United Kingdom fou...

Studies on the toxicity of coal-tar dyes. III. Reason of acute toxicity to fish caused by coal-tar dyes and their industrial effluents.

Reason of acute toxicity to fish caused by coal-tar dyes and their industrial effluents were studied from the three points of view. 1) Partition coefficient (n-octanol/water) was determined on several coal-tar dyes, and it was found that the larger the ratio was, the stronger was toxicity to fish. 2) As a result of determination about existent form of xanthene dyes under photo-irradiation, it w...

Cold Applied Coal Tar Paints

A retrospective study of the teratogenicity of dermatological coal tar products.

Sir, Medical pix lithantracis (PL) is obtained by fractionated distillation of crude coal tar (CCT). CCT contains at least 10,000 different compounds, including polycyclic aromatic hydrocarbons (PAHs). After dermatological application of PL-containing products, metabolites of PAHs have been found in blood (1) and urine (2). PAHs cause destruction of the oocyte in rodents, both pre-natally (3) a...

Groundwater Fate of Aromatic Hydrocarbons at Industrial Sites: a Coal Tar Site Case Study

The fate of groundwater contaminants in anthropogenic fill materials was investigated at a coal tar site, Site YYZ. This site was representative of other contaminated sites with a history of industrialization at which wastes from process operations form the local subsurface solids. The solids composing the groundwater-bearing unit at Site YYZ were reactants (oil), byproducts (tar, coke) and was...