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98%min
W&Q
1. Molecular Formula: K2SiF6
2. CAS NO.: 16871-90-2
3. Molecular Weight: 220.25
4. Property: It is a white crystalline powder or granule, slightly hygroscopic. Slightly soluble in cold water (more soluble in hot water), insoluble in ethanol. Its density is 2.65g/cm³ and it decomposes on heating (without a defined melting point).
5. Sepcification(%):
| Purity | 98.0min |
Ca | 0.01max |
| Cl | 0.1max |
| H2O | 0.5max |
| Si | 0.3max |
| Fe | 0.1max |
| SO4 | 0.01max |
| Heavy Metal(Pb) | 0.01max |
| Partical Size | |
| +60 mesh | 10max |
| +200 mesh | 60max |
| +325 mesh | 30max |
| -325 mesh | 10max |
W&Q's Potassium Silicofluoride is a highly versatile inorganic compound widely used in industrial applications, easily recognized by its white crystalline or powder appearance. Its chemical formula is K2SiF6. This stable salt is slightly soluble in water (with solubility increasing in hot water), producing an acidic solution, and serves as an important additive in wood preservation, ceramics manufacturing, metallurgy of aluminum and magnesium, optical glass production, synthetic mica processing and antisepsis.
1. Effective Opacifying and Fluxing Performance
With high purity levels 98%min, W&Q's Potassium Silicofluoride provides controlled fluoride release, acting as an excellent opacifier in glass and enamel formulations. This results in uniform milky or opalescent effects, improving product aesthetics and durability in ceramics and specialty glass manufacturing.
2. Stable and Low-Residue Performance
Low impurity and residue levels ensure minimal contamination during high-temperature processing, reducing defects in final products and maintaining consistent quality in ceramic glazes, enamels, and metallurgical applications.
3. Easy Handling and Integration
The white crystalline powder form is free-flowing and stable, allowing precise dosing and uniform mixing in dry formulations. Its controlled solubility prevents unwanted reactions, making it ideal for seamless integration into existing glass, ceramic, or welding flux production processes without adjustments.
Glass Processing Industry: In glass manufacturing, it serves as an effective opacifier for producing opalescent and milky glass. This creates uniform matte or pearl effects, enhancing aesthetics and light diffusion in decorative glass, tableware, and specialty glass products.
Ceramic and Enamel Production: For ceramic glazes and enamel coatings, it acts as a key flux and opacifier, lowering firing temperatures and improving surface finish. This results in better durability, gloss control, and chemical resistance in tiles, sanitary ware, and industrial enamels.
Metallurgical Flux Applications: Used as a flux in aluminum welding and brazing processes, it effectively removes oxides and improves metal wetting. This enhances joint strength and reduces defects in aluminum fabrication, welding rods, and foundry operations.
Wood Preservation: As a preservative agent, it protects timber from fungal decay, insects, and weathering, suitable for construction, fencing, and outdoor applications where long-term durability is required.
Why does W&Q supply Potassium Silicofluoride primarily in its standard crystalline powder form rather than other forms?
W&Q chooses the standard white crystalline powder form because it is the most stable and practical under typical storage and handling conditions. This form, developed through W&Q's optimized production processes, provides superior handling characteristics—free-flowing, low dust, and consistent particle size—while being cost-effective for large-scale industrial applications. Other forms, such as aqueous solutions, involve higher safety risks and instability due to hydrolysis, which is why W&Q focuses on delivering this reliable powder grade to meet the majority of customer needs efficiently.
Yes! Simply provide your logo or label design, and we'll incorporate it into the packaging—helping you maintain brand consistency in your supply chain.
What are the critical specifications to check when ordering?
Assay (K₂SiF₆ content): ≥98.0% or higher – guarantees the strong, consistent performance that W&Q is known for in glass opacifying, ceramic, and flux applications.
Impurity Limits: Sulfate (SO₄) ≤0.01%, Chloride (Cl) ≤0.1%, Heavy metals (Pb) ≤0.01%, Iron (Fe) ≤0.1% – these tight controls reflect W&Q's commitment to delivering clean, low-residue products.
Heavy Metals: Strictly limited levels of Pb, As, Cd, and Hg to align with W&Q's high industrial safety and environmental standards.
Physical Appearance: Uniform white crystalline powder, free-flowing, and non-caking.
Yes – W&Q's industrial-grade Ammonium Fluoride is specifically optimized and widely trusted for glass etching, metal surface treatment, industrial descaling, and wood preservation. Backed by W&Q's years of expertise in inorganic fluorine chemicals and stable production capacity, it delivers reliable results in demanding environments. The product complies with general international chemical regulations for industrial use. W&Q provides comprehensive safety data sheets (SDS), technical support, and documentation to assist with regional requirements, ensuring our customers can use W&Q products with complete confidence.
Yes – W&Q's industrial-grade Potassium Silicofluoride is specifically optimized and widely trusted for opalescent glass production, ceramic glazes, enamel formulations, welding fluxes, and wood preservation. Backed by W&Q's years of expertise in inorganic fluorine chemicals and stable production capacity, it delivers reliable results in demanding environments. The product complies with general international chemical regulations for industrial use. W&Q provides comprehensive safety data sheets (SDS), technical support, and documentation to assist with regional requirements, ensuring our customers can use W&Q products with complete confidence.
W&Q stands out as a leading supplier of Potassium Silicofluoride, backed by our expertise in fine chemicals and customer focus:
• We offer a full product line of cobalt, nickel, copper, fluoride, tungsten, and rare earth compounds—so you can source all your industrial chemicals from a single, reliable supplier.
• Our team includes professional technical personnel who provide tailored support, from helping you optimize opacifying agents in glass formulations and ceramic glazes to troubleshooting application issues in welding fluxes or wood preservation.
• We adhere to the business philosophy of "breaking old rules and embracing innovation," constantly improving our production processes to enhance product quality and reduce costs.
• We provide excellent after-sales service, ensuring you are satisfied with your order—if you have questions or concerns, our team responds promptly.
• With over 40 key products covering industry, ceramics, glass, metallurgy, and construction sectors, we understand the unique needs of glass manufacturers, ceramic producers, and welding material suppliers, and can adapt to your specific requirements.
