| Sodium fluorosilicate |
| Molecular formula |
Na2SiF6 |
| Molecular weight |
188.06 |
| Dangerous level |
6.1 |
| Physicochemical properties |
colorless or white hexagonal crystalline powder. Odorless tasteless. Relative density 2.679g/cm3. |
| Uses |
Wood industry as antiseptic, |
| Quality index |
| Index name |
Milky white additive type |
Industrial material type |
Solvent, auxiliary type |
Refractory material type |
Anti-corrosion type |
| Top Grade |
First product |
Qualified product |
|
|
|
|
|
|
| Sodium fluorosilicate (as dry) % |
≥99.0 |
≥99.0 |
≥98.5 |
≥97.0 |
≥98.5 |
≥98.5 |
≥97.0 |
| Fe % |
≤0.01 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
| Free acid (HCL)% |
≤0.10 |
≤0.10 |
≤0.15 |
≤0.20 |
≤0.15 |
≤0.15 |
≤0.20 |
| Heavy metals (as Pb) % |
≤0.005 |
≤0.02 |
≤0.05 |
≤0.05 |
≤0.05 |
≤0.05 |
≤0.05 |
| Water-insoluble matter |
≤0.30 |
≤0.40 |
≤0.50 |
≤1.00 |
≤0.50 |
≤0.50 |
≤1.00 |
| Loss on dry at 105℃ |
≤0.3 |
|
|
|
≤0.4 |
≤0.4 |
≤0.6 |
| Fineness on 250/um sieve % |
≥99.0 |
|
|
|
≥98.5 |
≥98.5 |
≥97.0 |
|
