Coal Tar

Title: Coal Tar
Trademarks: Clinitar (Smith & Nephew); Psorigel (Alcon); T/Gel (Farillon)
Literature References: A by-product in the destructive distillation of coal. Constit. Benzene, toluene, naphthalene, anthracene, xylene, and other aro-matic hydrocarbons; phenol, cresol, and other phenol bodies; ammonia, pyridine, and some other organic bases; thiophene. Monographs: Coal Tar Data Book, 2nd ed., 1965, compiled and published by The Coal Tar Res. Assoc., Gomersal (Leeds), England; H. G. Franck, G. Collin, Steinkohlenteer (Springer Verlag, Heidelberg-New York, 1968) 255 pp. Review of carcinogenic risk: IARC Monographs 35, 83-159 (1985); of toxicology and human exposure: Toxicological Profile for Wood Creosote, Coal Tar Creosote, Coal Tar, Coal Tar Pitch, and Coal Tar Pitch Volatiles (PB2003-100136, 2002) 394 pp.
Properties: Almost black, thick liq or semisolid; characteristic odor. A small portion of coal tar dissolves in water; all or almost all dissolves in benzene or nitrobenzene; partly dissolves in alcohol, ether, chloroform, carbon disulfide, methanol, acetone, petr ether, or sodium hydroxide soln. Practically insol in water. Sol in 20 parts alcohol; miscible with abs alcohol, acetone, petrolatum, oils and fats.
Derivative Type: Purified coal tar
Additional Names: Pixalbol
Properties: Light-yellow, thin, oily liq.
CAUTION: Coal tar and coal tar pitches are listed as known human carcinogens: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-68.
Use: Prodn of creosote, coal tar pitch, crude naphthalene and anthracene oils; as fuel for furnaces in steel industry.
Therap-Cat: Antieczematic (topical).
Therap-Cat-Vet: Topically in skin disorders.
Cobaltic Acetate Cobaltic Fluoride Cobaltic Oxide Monohydrate Cobaltic Potassium Nitrite Cobaltic-Cobaltous Oxide

Coal tar is a brown or black liquid of extremely high viscosity. Coal tar is among the by-products when coal is carbonized to make coke or gasified to make coal gas. Coal tars are complex and variable mixtures of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds.[1]