The term granular carbon is equivalent to coarse
particulate carbon. This is a
carbon material consisting of separate particles or grains which are monolithic, on the average larger than about
in diameter, but smaller than about
.
Source:
PAC, 1995, 67, 473
(Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995))
on page 491
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
doi:10.1351/goldbook.
,
or to fine particulate carbon for grain sizes below ca.
.
Colloidal graphite obtained by grinding of natural graphite is a typical extra fine particulate carbon. Industrial carbon materials (such as electrodes) are made with fillers composed of coarse particulate carbon
(coke grains) and fine particulate carbon (flour), and sometimes even colloidal carbon, carbon blacks or soot).
They are therefore polygranular materials.
