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Silica
 

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Silica SiO2
Standard: FCC-1983

  Assay (SiO2)

≧94.0%

  As

≤0.0003%

  Heavy metals (as Pb)

≤0.003%

  Loss on drying

≤7.0%

  Loss on ignition

≤8.5%

  Sulifate (as Na2SO4)

≤5%

  Screen residue (325 MESH)

≤5%

  PH volume

6.0---7.5

  Conclusion

The specification conforms with FCC--1983


     
 
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