coal tar pitch

https://doi.org/10.1351/goldbook.C01121
A residue produced by distillation or heat treatment of coal tar. It is a solid at room temperature, consists of a complex mixture of numerous predominantly aromatic @H02889@ and heterocyclics, and exhibits a broad softening range instead of a defined @M03821@ temperature.
Note:
The hydrogen @A00442@ in coal tar @P04677@ (ratio of aromatic to total content of hydrogen atoms) varies from 0.7 to 0.9.
Source:
PAC, 1995, 67, 473. (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 485 [Terms] [Paper]
Citation: 'coal tar pitch' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.C01121 RIS BibTex EndNote
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Last revised: February 24, 2014