Molecular formula:K2SiF6
Molecular weight :220.26
Properties: white crystal or powder , hexagonal crystal Relative density 3.08.
Uses: wood preservative, glass, insecticide, ceramic and synthetic mica
Quality standard:
Index name |
Index |
Second grade |
First grade |
Assay % |
≥98.0 |
≥99.0 |
Free acid(H2SiF6)% |
≤0.5 |
≤0.1 |
Sulfate (SO4)% |
≤0.02 |
≤0.02 |
Chloride (Cl) % |
≤0.1 |
≤0.1 |
Heavy metals(Pb)% |
≤0.01 |
≤0.01 |
Moisture % |
≤0.5 |
≤0.2 |
Fineness on 80 mesh screen % |
90 |
100 |
Water insoluble matter % |
≤0.5 |
≤0.1 |
Packing:net wt. 25kg, plastic woven bag. |
