Pitch Workers

  • R. C. Tung
  • J. S. Taylor
  • T. F. DownhamII

Abstract

Distillation fractions of crude coal tar are obtained at various temperatures and include light oil (up to 180 °C), middle oil (180–230°), heavy oil (230–270°), anthracene oil (270–400°), tar fraction (400–600°), and pitch which is the final and most abundant residue (L’Epee et al. 1983; Adams 1990). Pitch, which is usually solid at room temperature, can be produced to a specific softening point between 90 °C and 165 °C. Manufacturing applications of coal tar pitch (CTP) include its use in briquettes, roofing pitch, artificial asphalt, electrodes as a dielectric, adhesives for bonding insulating panels in cold stores, brushes for electric motors or activated carbon, waterproofing materials for wood, dyestuffs, paints, acid-resistant coatings, extenders when blended with various resins and elastomers, saturants for felt, impregnants in the manufacture of carbon products, and ‘clay’ targets for skeet shooting (L’Epee et al. 1983; Anonymous 1997).

Keywords

Dust PAHs Distillation Fraction Gravel Naphtha 

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References

  1. Anonymous (1996) Using coal tar products safely. AlliedSignal, Inc., Morristown, NJ, pp 1–2Google Scholar
  2. Anonymous (1997) The origin of coal tar. AlliedSignal, Inc., Morristown, NJ, pp 1–14Google Scholar
  3. Adams RM (1990) Occupational skin cancer. In: Occupational skin disease. Grune and Stratton, New York, pp 145–147Google Scholar
  4. Bickers DR (1981) Carcinogenicity and mutagenicity of therapeutic coal tar- a perspective. J Invest Dermatol 77:173–174PubMedCrossRefGoogle Scholar
  5. Bleehan SS (1981) Light, chemicals and the skin: conatct Photodermatitis. Br J Dermatol 105[Suppl 21] 123–27Google Scholar
  6. Conde-Salazar L, Guimarens D, Romero LV (1987) Occupational coal tar dermatitis. Contact Dermatitis 16:231Google Scholar
  7. Combes FC (1954) Dermatergoses due to coal tar. In: Curtis AC (ed) Coal tar and cutaneous carcinogenesis in industry. Bannerstone House, Springfield, pp 34–49Google Scholar
  8. Crow KD (1970) Chloracne. Trans St. Johns Hosp Dermatol Soc 56:79–99PubMedGoogle Scholar
  9. Crow KD, Alexander E, Buck WH, et al. (1961) Photosensitivity to pitch. Br J Dermatol 73:220–232PubMedCrossRefGoogle Scholar
  10. Cusano F, Capozzi M, Errico G (1992) Allergic contact dermatitis from coal tar. Contact Dermatitis 27:51–52PubMedCrossRefGoogle Scholar
  11. Diette KM, Grange RW, Stern RS, et al. (1984) Coal tar phototoxicity: characteristics of the smarting reaction. J Invest Dermatol 84:268–271CrossRefGoogle Scholar
  12. Emmett EA (1986) Cutaneous and ocular hazards of roofers. Occup Med 2:307–322Google Scholar
  13. Epstein JH, Epstein WL (1962) Cocarcinogenesis effect of ultraviolet light on DMBA tumor initiation in albino mice. J Invest Dermatol 50:455–460CrossRefGoogle Scholar
  14. Foerster HR, Schwartz L (1939) Occupational melanosis from pitch. Arch Dermatol 39:955–968CrossRefGoogle Scholar
  15. Goetz H (1976) Tar keratosis. In: Andrade R (ed) Cancer of the skin. WB Saunders, Philadelphia, p 495Google Scholar
  16. Goncalo S, Sousa I, Moreno A (1984) Contact dermatitis to coal tar. Contact Dermatitis 10:57–58PubMedCrossRefGoogle Scholar
  17. Gorman R, Liss GM (1984) Occupational exposure to pitch in a non-heated process, phototoxicity, and pre-malignant warts. In: Cooke M, Dennis AJ (eds) Polynuclear aromatic hydrocarbons: mechanism, methods and metabolism. Battelle Press, Columbus, pp 497–508Google Scholar
  18. Henry SA (1947) Chemical aspects of industrial skin cancer caused by pitch and tar. Br J Radiol 22:149–157CrossRefGoogle Scholar
  19. Hodgson GA (1973) Pitch worker’s skin. Br J Dermatol 89[Suppl 9]:105–107CrossRefGoogle Scholar
  20. Hodgson GA, Whitely HJ (1970) Personal susceptibility to pitch. Br J Ind Med 27:160–166PubMedGoogle Scholar
  21. Kaidby KH, Kligman AM (1977) Clinical and histological study of coal tar phototoxicity in humans. Arch Dermatol 113:592–595CrossRefGoogle Scholar
  22. L’Epee P, Lazarini HJ, Doignon J (1983) Tar and pitch. In: Parmeggiani L (ed) Encyclopaedia of occupational health and safety. International Labour Office, Geneva, pp 2147–2149Google Scholar
  23. Nishio K (1982) Occupational skin diseases- skin affections caused by tar and pitch. J Univ Occup Environ Health 4:215–223Google Scholar
  24. Pion IA, Koenig KL, Lim HW (1995) Is dermatologic usage of coal tar carcinogenic? Dermatol Surg 21:227–231PubMedGoogle Scholar
  25. Pott P (1775) Cancer scroti. In: Chiurgical Observations. Hawes, Clark, and Collins, London, pp 63–68Google Scholar
  26. Reeve GR (1994) Coal tar pitch volatiles. In: Zenz C, Dickerson OB, Horvath EP (eds) Occupational medicine. Mosby-Year Book, St. Louis, pp 933–936Google Scholar
  27. Ross P (1948) Occupational skin lesions due to pitch and tar. BMJ 2:369–375PubMedCrossRefGoogle Scholar
  28. Schwartz L, Tulipan L, Birmingham DJ (1957) Dermatoses caused by carbon, coal tar, and coal tar products. In: Occupational diseases of the skin. Lea and Fabiger, Philadelphia, pp 300–310Google Scholar
  29. Taylor JS (1987) Pilosebaceous unit. In: Maibach HI (ed) Occupational and industrial dermatology. Year Book Medical Publishers, Chicago, pp 105–120Google Scholar
  30. Wallcave L, Garcia H, Feldman R (1971) Skin tumorigenesis in mice by petroleum asphalts and coal-tar pitches of known polynuclear aromatic hydrocarbon content. Toxicol Appl Pharmacol 18:41–52PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • R. C. Tung
  • J. S. Taylor
  • T. F. DownhamII

There are no affiliations available

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