What is coal tar pitch?

Coal-tar pitch is a thick black liquid that remains after the distillation of coal tar. It is used as a base for coatings and paint, in roofing and paving, and as a binder in asphalt products. Both coal tar and coal-tar pitch contain many chemical compounds, including carcinogens such as benzene.

How is coal tar pitch produced?

Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. Coal-tar pitch is the residue from the distillation of coal tar (Betts, 1997). The largest source of tar and pitch is the pyrolysis or carbonization of coal.

Is coal tar pitch hazardous?

Coal Tar Pitch may be hazardous to the environment, especially to aquatic organisms, and may cause long- term effects.

Where do you find volatiles in coal tar?

Coal tar pitch volatiles (CTPVs) are found in the industry when heating of coal tar or coal tar pitch takes place. Once the pitch is heated, chemicals vaporize and may be inhaled by workers.

What are the health effects of coal tar pitch volatiles?

Other animal data: The major health effects resulting from long-term repeated exposure to coal tar pitch volatiles (CTPV) are cancer of the lung, kidney, and skin [Redmond et al.

What kind of pitch does coal tar have?

Chemical Name: Pitch, coal tar Synonyms: Binder pitch, Binder pitch blend, impregnation pitch solid, impregnation pitch blend solid, 925 pitch, 425 pitch, 100 pitch, 80 pitch, 15 Vac pitch, 30 Medium pitch CAS Number: 65996-92-1 Product Use: waterproofing; roofing; specialty carbon products Manufacturer Information:

What is the current IDLH for coal tar?

Human data: None relevant for use in determining the revised IDLH. Basis for revised IDLH: The revised IDLH for coal tar pitch volatiles is 80 mg/m 3 (as the benzene-soluble fraction) based on toxicity data in animals [Bingham 1971; Mazumdar et al. 1975; Redmond et al. 1972] (see discussion above).