Sodium Silico fluoride
- Synonym: Sodium Fluorosilicate
- Formula: Na2SiF6
- Molecular Weight: 188.06
- HAZARD CLASS: 6.1
- UN. NO.: 2674
- CAS: 16893-85-9
- EINECS: 240-934-8
- H.S. CODE: 2826.901
Properties
- Colorless
- odorless
- poisonous and hygroscopic hexa-square crystal
- relative density:2.679
- soluble in aether
- insoluble in alcohol
- Solubility in acid larger than in water
- decomposed as fluoride and silicon oxide in alkali solution
- decomposed as sodium fluoride and silicon fluoride over 300℃.
Packing
- 25kg each bag for net weight
- double woven bag packing
- the inner packing polyethylene plastic film bag
- the outer packing polypropylene plastic woven bag.
Product uses
- preservative in wood industry
- hygroscopic agent
- glass and enamel opalizer
- Cement Additive
| Items | Powder High purity | Partially Prepared Products Qulified goods |
|---|---|---|
| appearance | white powder | white powder |
| sodium fluosilicate (Na2SiF6) | ≥99.0 | ≥98 |
| 105℃ loss on drying | ≤0.30 | ≤1.0 |
| free acid (HCl) | ≤0.10 | ≤0.10 |
| chloride(Cl) | ≤0.15 | ≤0.3 |
| water insoluble | ≤0.4 | ≤0.6 |
| sulfate(SO4) | ≤0.25 | ≤0.3 |
| iron(Fe) | ≤0.02 | ≤0.03 |
| grain size | 60-200mesh | 60-200mesh |