Size
|
um
|
1.8±0.2
|
Passing through 325 Mesh
|
um
|
99.90%
|
Whiteness
|
%
|
92.7 min
|
Moisture
|
%
|
0.15 max
|
Density
|
g/cm3
|
2.7
|
Calcium carbonate content
|
%
|
98 min
|
Ignition loss
|
%
|
44 max
|
PH of 10% solution
|
PH
|
9 ± 1
|
Insoluble matter content in HCl
|
%
|
0.05 max
|
Silica dioxide content (SiO2)
|
%
|
0.10 max
|
Aluminum oxide content (Al2O3)
|
%
|
0.03 max
|
Ferric oxide content (Fe2O3)
|
%
|
0.04 max
|
Magnesium oxide content (MgO)
|
%
|
0.25 max
|
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