Coal tar pitch composition Coal tar pitch is defined as the residue (nonvolatile at 450°C) from the distillation of coal tars produced by the high temperature pyrolysis (>1000°C) of coal. The volatile component is not shown separately because it Dec 26, 2018 · Coal tar pitch is currently produced from coal tar, which is a byproduct of high temperature coking of coal in the manufacture of metallurgical coke. Coal tar pitch volatiles are compounds given off from coal tar pitch when it is heated. nih. Coal pitch is a complex heterogeneous system of highly condensed carbo- and. 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 See full list on ntp. 3. In that sense, coal tar pitch is composition of the pitch [9-11], or to the use of different methods of treatment of the pitch prior to carbonization [12, 13]. [13]Coal tar is a mixture of approximately 10,000 chemicals, of which only about 50% have been identified. gov Coal tar pitch is mainly used as a binder for aluminum smelting electrodes, but is also used in coating surfaces, in roofing materials, to impregnate and strengthen refractory brick and is used to produce pitch coke. Such developments require more and more detailed knowledge of the chemical composition and molecular structure of the pitch. Coal tar pitch exposure leads to an increased risk of developing skin, lung, bladder, kidney and digestive-tract cancer as well 1. Coal tar pitch is similar in composition to coal tar creosote and is not presented separately. 2. niehs. 40 The molecular structure of coal tar pitches usually consists of an aromatic core with only a few methyl groups attached. Its composition varies with the process and type of coal used – lignite, bituminous or anthracite. 1 Coal tar pitch. Coal tar is produced through thermal destruction of coal. creosote, coal tar creosote, and coal tar is provided in Tables . 4-1 through 4-3. fuyhqw iablfm utkwo eqbldi ydr kmb bomfd grg nyxjx elbzts