Term: filler
https://doi.org/10.1351/goldbook.F02363

Definition:
Filler (also called grist) is a petroleum- or coal-based coke fraction of a green, carbon mix or formulation. Coarse particles, > 0.425 mm, are sometimes referred to as tailings; fine particles, < 0.074 mm, are referred to as flour. graphite flour is also used as a filler.

Related Terms:
1) coke (http://doi.org/10.1351/goldbook.C01142).
2) carbon mix (http://doi.org/10.1351/goldbook.C00842).
3) graphite (http://doi.org/10.1351/goldbook.G02684).

Source: PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 489 (https://doi.org/10.1351/pac199567030473)

Citation: 'filler' 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.F02363

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