Title: polygranular graphite
Long Title: IUPAC Gold Book - polygranular graphite
DOI: 10.1351/goldbook.P04731
Status: current

Definition
A graphite material composed of grains which can be clearly distinguished by means of optical microscopy.

Note
From the viewpoint of crystallinity, a polygranular graphite is always a polycrystalline graphite but not vice versa. Most industrial graphite materials are polygranular. Monogranular materials consist mostly of non-graphitic carbon, such materials are called monolithic or agranular carbons.

Related Terms
- agranular carbons: https://goldbook.iupac.org//terms/view/A00188
- crystallinity: https://goldbook.iupac.org//terms/view/C01433
- graphite: https://goldbook.iupac.org//terms/view/G02684
- graphite material: https://goldbook.iupac.org//terms/view/G02687
- non-graphitic carbon: https://goldbook.iupac.org//terms/view/N04193
- polycrystalline graphite: https://goldbook.iupac.org//terms/view/P04723

Source
- PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 501 (https://doi.org/10.1351/pac199567030473)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/P04731/html
- json: https://goldbook.iupac.org/terms/view/P04731/json
- xml: https://goldbook.iupac.org/terms/view/P04731/xml

Citation: Citation: 'polygranular graphite' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.P04731
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Accessed: 2026-04-19T05:39:40+00:00