Term: mesogenic pitch
https://doi.org/10.1351/goldbook.M03841

Definition:
A pitch with a complex mixture of numerous essentially aromatic hydrocarbons. It does not contain anisotropic particles detectable by optical microscopy. Mesogenic pitch is low in quinoline-insoluble fractions and capable of transforming into mesophase pitch during continuous heat treatment above 750 K by the formation of optically detectable carbonaceous mesophase.

Related Terms:
1) pitch (http://doi.org/10.1351/goldbook.P04677).
2) mesophase pitch (http://doi.org/10.1351/goldbook.M03850).
3) carbonaceous mesophase (http://doi.org/10.1351/goldbook.C00822).
4) hydrocarbons (http://doi.org/10.1351/goldbook.H02889).

Source: PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 496 (https://doi.org/10.1351/pac199567030473)

Citation: 'mesogenic pitch' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.M03841

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