Overview of Fumed Silica

Fumed silica, also known as pyrogenic silica, is an ultra-fine, high-purity amorphous silicon dioxide (SiO2) produced via the combustion of silicon tetrachloride in an oxygen-hydrogen flame. It appears as a fluffy white powder and is valued for its ability to thicken, stabilize, and reinforce materials.

Features of Fumed Silica

• High Surface Area: Typically ranges from 50 to 380 m²/g, providing excellent thickening and reinforcing properties.
• Hydrophilic or Hydrophobic Variants: Available in both forms depending on surface treatment, allowing for tailored applications.
• Excellent Thixotropy: Increases viscosity and improves flow properties of liquids and pastes.
• Chemical Inertness: Resistant to most chemicals, making it suitable for a wide range of industrial uses.

•  Enhances free-flowing properties and stability.

Specification of Fumed Silica

Product Requirements: Fumed Silica

Summary

Fumed silica is a high-purity, amorphous kind of silicon dioxide (SiO ₂). It looks like a penalty, white powder with extremely reduced bulk thickness. This product is made via a flame hydrolysis procedure using silicon tetrachloride and oxygen. The result is a product with strong thickening, anti-settling, and enhancing homes.

Trick Characteristics

Look: Free-flowing white powder
Chemical Formula: SiO TWO.
Purity: Typically ≥ 99.8%.
Bulk Thickness: 30– 80 g/L.
Area (BET): 50– 400 m ²/ g, depending on quality.
pH (in 4% diffusion): 3.5– 4.5.

Fumed silica particles are extremely little. They form chain-like aggregates that produce a three-dimensional network in fluids. This framework provides the material its unique capacity to control circulation and prevent separation in formulations.

Common Applications

This additive jobs well in lots of industries. In paints and finishes, it quits pigments from working out and boosts scratch resistance. In adhesives and sealants, it includes thixotropy– meaning the item stays after application yet spreads out conveniently when mixed or squeezed.

In cosmetics, fumed silica assists powders circulation smoothly and absorb excess oil. In drugs, it acts as a glidant to boost powder flow throughout tablet production. Rubber and plastic producers utilize it to reinforce materials and boost resilience.

Handling and Storage space

Shop fumed silica in a dry, great area. Keep containers secured tightly to prevent dampness absorption. Though safe, wear basic safety gear like handwear covers and a mask when managing large total up to decrease dirt inhalation.

Always follow local safety and security standards. Avoid developing air-borne dirt. Use correct ventilation in work areas.

Different qualities suit different requirements. Pick the best surface area and therapy (hydrophilic or hydrophobic) based on your application’s demands.

Applications of Fumed Silica

Applications of Fumed Silica

Thickening and Rheology Control

Fumed silica works well as a thickener in many fluids. It helps regulate just how a product moves. Paints, adhesives, and sealers utilize it to stay secure and not leak. When added in percentages, it gives just the best appearance without transforming other buildings.

Anti-Settling Agent

In coverings and inks, solid particles can sink in time. Fumed silica stops this from occurring. It holds pigments and fillers equally suspended. This means users obtain constant color and efficiency every single time they open a container.

Free-Flow Aid

Powdered items like seasonings, cleaning agents, or drugs commonly clump together. Fumed silica maintains them streaming openly. A small quantity coats each particle and obstructs dampness. That way, powders pour easily and blend efficiently.

Support in Silicone Rubbers

Silicone rubber by itself is soft and weak. Adding fumed silica makes it much more powerful. It enhances tear resistance, tensile strength, and durability. This is why it’s used in medical devices, cookware, and vehicle parts.

Matting Agent

For a soft, non-shiny surface, fumed silica is included in paints and varnishes. It scatters light as opposed to reflecting it. The outcome is a smooth, sophisticated matte look that lots of clients like.

Attachment Promoter

Some sealers require extra grip to stick well. Fumed silica aids them bond snugly to surface areas like glass, steel, or plastic. It likewise maintains the sealant from diminishing or cracking after it treatments.

Insulation and Thermal Stability

Because of its fine structure and high area, fumed silica traps air well. This makes it helpful in thermal insulation materials. It also remains steady at high temperatures, so it operates in requiring settings like electronics or commercial equipment.

Company Introduction

Welcome to HiphopGalaxy, a trusted global supplier of high-quality silicon dioxide (SiO2) powder, renowned for its exceptional purity and performance. Established with a vision to deliver cutting-edge materials that meet the diverse needs of modern industries, we have positioned ourselves as a leading player in the international market.

Our SiO2 powders find applications across multiple sectors, including adhesives, coatings, pharmaceuticals, cosmetics, polymers, and electronics. Each application benefits from the unique properties of our products—high surface area, excellent thixotropy, chemical inertness, and superior reinforcement capabilities. Whether you need hydrophilic or hydrophobic variants, we offer tailored solutions to meet your specific requirements.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Fumed Silica

Fumed Silica: Top 5 FAQs

What is fumed silica?

Fumed silica is a very fine white powder. It is made by burning silicon tetrachloride in a flame of hydrogen and oxygen. The result is tiny particles that stick together to form a light, fluffy material. People also call it pyrogenic silica.

Why is fumed silica used in products?

It helps thicken liquids and stop them from separating. It also stops powders from clumping. Because of this, it works well in paints, adhesives, cosmetics, and food. It gives products better texture and stability.

Is fumed silica safe?

Yes, when used correctly. Food-grade fumed silica is approved for use in small amounts in food. In cosmetics and industrial products, it is also considered safe if handled properly. Always follow safety instructions on the label or safety data sheet.

How much fumed silica should I add?

The amount depends on what you are making. Most products need only 0.5% to 5% by weight. Adding too much can make the mixture too thick or dry. Start with a small amount and test before adding more.

Can fumed silica be mixed easily?

It mixes best with proper equipment. Because the powder is very light, it can float in the air. Use high-shear mixers or pre-disperse it in liquid first. This helps avoid lumps and ensures even mixing. Always wear a mask when handling the dry powder to protect your lungs.