Term: thermal black
https://doi.org/10.1351/goldbook.T06296

Definition:
A special type of carbon black produced by pyrolysis of gaseous hydrocarbons in a preheated chamber in the absence of air. Thermal black consists of relatively large individual spheres (100-500 nm diameter) and aggregates of a small number of pseudospherical particles. The preferred alignment of the layer planes is parallel to the surface of the spheres.

Related Terms:
1) carbon black (http://doi.org/10.1351/goldbook.C00824).
2) pyrolysis (http://doi.org/10.1351/goldbook.P04961).
3) 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 505 (https://doi.org/10.1351/pac199567030473)

Citation: 'thermal black' 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.T06296

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