Silicon Dioxide

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Silicon Dioxide

Silicon dioxide also named white carbon black, it mainly consists of ingredient "SiO2", is similar to carbon black in the application, its appearance showed white, highly dispersed, amorphous powder or flocculent powder.And also can be processed into granule or strip form.
Application
Silicon dioxide has a wide range of uses, mainly used in the production of glass, water glass, pottery, enamel, refractory materials, aerogel felt, ferrosilicon, type sand, monomorphous silica, cement, etc. In ancient times, silicon dioxide was also used to make glaze and carcasses for porcelain.
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Specification
Testing Item
Unit
Standard
Testing Method
Appearance
/
Micro Pearl
Visual Inspection
Silica Content
%
≥96
DB35/T 1208-2011
Heating Loss(105ºC, 2h)
%
≤6.5
DB35/T 1208-2011
Ignition Loss(1000ºC,2h)
%
≤8.5
DB35/T 1208-2011
PH Value
/
6.0-7.5
/
DBP Absorption Value
ml/g
2.4-3.0
/
Soluble Salts (Na2So4)
%
≤4.0
DB35/T 1208-2011
Pb
mg/kg
≤5.0
DB35/T 1208-2011
Heavy Metal
mg/kg
≤30
DB35/T 1208-2011
As
mg/kg
≤3.0
DB35/T 1208-2011
Cd
mg/kg
≤0.5
DB35/T 1208-2011
Particle Size (D50)
μm
150-250
/


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