Registration Dossier
Registration Dossier
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EC number: 266-340-9 | CAS number: 66402-68-4 This category encompasses the various chemical substances manufactured in the production of ceramics. For purposes of this category, a ceramic is defined as a crystalline or partially crystalline, inorganic, non-metallic, usually opaque substance consisting principally of combinations of inorganic oxides of aluminum, calcium, chromium, iron, magnesium, silicon, titanium, or zirconium which conventionally is formed first by fusion or sintering at very high temperatures, then by cooling, generally resulting in a rigid, brittle monophase or multiphase structure. (Those ceramics which are produced by heating inorganic glass, thereby changing its physical structure from amorphous to crystalline but not its chemical identity are not included in this definition.) This category consists of chemical substances other than by-products or impurities which are formed during the production of various ceramics and concurrently incorporated into a ceramic mixture. Its composition may contain any one or a combination of these substances. Trace amounts of oxides and other substances may be present. The following representative elements are principally present as oxides but may also be present as borides, carbides, chlorides, fluorides, nitrides, silicides, or sulfides in multiple oxidation states, or in more complex compounds.@Aluminum@Lithium@Barium@Magnesium@Beryllium@Manganese@Boron@Phosphorus@Cadmium@Potassium@Calcium@Silicon@Carbon@Sodium@Cerium@Thorium@Cesium@Tin@Chromium@Titanium@Cobalt@Uranium@Copper@Yttrium@Hafnium@Zinc@Iron@Zirconium
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
Zhang et al. 2010:
Particle size by sieving total sample, in cumulative passing weight units. Weight percentage of passing under 90 µm sieve: 7.3%
≤1 mm= 48.5 %
< 3 mm= 98.9%
< 5 mm= 100%
Particle distribution by laser diffraction of under 90 µm, in cumulative weight units:
1µm= 0.3 %
2µm= 3.1%
4µm= 7.7%
8µm= 12.3%
16µm= 18.6%
30µm= 30.5%
32µm= 32.4%
45µm= 45.5%
50µm= 50.5%
64µm= 63.9%
75µm= 72.9%
80µm= 76.4%
110µm= 91.0%
150µm= 98.6%
Additional information
The particle distribution measured by sieving total sample, in cumulative passing weight units is in the range from 48.5% ( ≤1 mm) to 100% (<5 mm). Weight percentage of passing under 90 microns sieve: 7.3%
The particle distribution by laser diffraction of under 90 µm, in cumulative passing weight units is in the range from 0.3% (1µm) to 98.6 % (150 µm). The difference in weight percentanges between values obstained by sieving and laser diffraction value is due to particle shape which is not spherical.
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