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/Sio2

Item Spec: Fumed Silica (SiO TWO)

Summary

Fumed silica is a high-purity, amorphous kind of silicon dioxide. It looks like a fine, white powder with a cosy texture. This product is made through fire hydrolysis of silicon tetrachloride in a hydrogen-oxygen fire. The result is a product with very tiny particle dimension and large surface.

Key Properties

Chemical Solution: SiO TWO.
Purity: Normally ≥ 99.8%.
BET Area: Varies from 50 to 400 m ²/ g, depending on the quality.
Bulk Thickness: Around 30– 80 g/L.
pH Worth (in 4% dispersion): 3.6– 4.6.
Loss on Drying (105 ° C, 2 hours): ≤ 1.5%.
Ignition Loss (1000 ° C, 1 hour): ≤ 2.0%.

Fumed silica does not liquify in water or most solvents. It reveals superb thermal security and continues to be inert under typical conditions. Its particles create loose, three-dimensional networks that give strong thickening and anti-settling impacts.

Typical Applications

This material is extensively utilized as a thickening representative, reinforcing filler, or free-flow additive. In paints and finishings, it protects against pigment settling and boosts scratch resistance. In adhesives and sealers, it controls flow and quits sagging. Rubber and plastic markets utilize it to enhance mechanical stamina. It also works as an anti-caking representative in powders like seasonings, drugs, and cosmetics.

Handling and Storage space

Store fumed silica in a completely dry, awesome place. Maintain containers securely near stay clear of dampness absorption. Though non-toxic, great dirt might irritate eyes or lungs. Usage proper air flow and use safety gear throughout handling. Stay clear of producing airborne dirt.

Applications of Fumed Silica/Sio2

Applications of Fumed Silica (SiO TWO)

Enlarging and Rheology Control

Fumed silica is widely utilized to regulate the circulation and density of liquids. It assists paints, coatings, and adhesives remain secure without separating. When added in small amounts, it stops pigments from sinking and maintains the product uniform. This makes application smoother and much more regular.

Support in Rubber and Plastics

In rubber products like tires or seals, fumed silica enhances strength and durability. It also improves tear resistance and reduces wear. In plastics, it improves mechanical residential or commercial properties without impacting openness. This makes it ideal for high-performance components that require to stay clear and strong.

Anti-Caking Agent in Powders

Dry powders such as seasonings, drugs, or toners frequently glob together. Fumed silica prevents this by finish fragments and keeping them different. The outcome is a free-flowing powder that puts easily and mixes well.

Matting Representative in Coatings

For a soft, non-reflective coating on surface areas, fumed silica works as a matting agent. It spreads light uniformly, offering furniture, electronic devices, or auto parts a streamlined, low-gloss look. The surface area feels smooth yet not glossy.

Performance Additive in Sealants and Adhesives

Sealants and adhesives require to hold shape without drooping. Fumed silica gives them the appropriate tightness so they stay where applied. It likewise assists them bond better and last longer under stress or altering temperature levels.

Use in Cosmetics and Personal Treatment

Numerous lotions, creams, and make-up items include fumed silica. It takes in excess oil, boosts texture, and aids ingredients spread out uniformly on the skin. It likewise gives a smooth feel without greasiness.

Specialized Applications

Fumed silica plays a role in advanced areas like battery modern technology, thermal insulation, and food handling. Its high purity and fine particle size make it suitable for delicate and requiring usages where performance matters most.

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/Sio2

Frequently Asked Questions About Fumed Silica (SiO₂)

What is fumed silica?

Fumed silica is a very fine white powder made from silicon dioxide (SiO₂). It forms when silicon tetrachloride burns in a flame of hydrogen and oxygen. The result is tiny particles that clump together loosely. This gives the material a large surface area and strong thickening power.

Why is fumed silica used in products?

People add fumed silica to liquids and pastes to stop them from flowing too much. It helps keep solid particles from sinking to the bottom. It also stops foam from forming in some cases. You’ll find it in paints, adhesives, cosmetics, and even food.

Is fumed silica safe?

Yes, when used correctly. Fumed silica is not toxic. Regulatory groups like the FDA and EFSA approve it for use in food and personal care items. Still, breathing in large amounts of the dry powder over time may irritate the lungs. Always follow safety instructions when handling it.

How does fumed silica thicken liquids?

The tiny particles link together in the liquid to form a weak 3D network. This network holds the liquid in place without changing its look or feel much. A small amount—often less than 5%—is enough to make a big difference in thickness.

Can fumed silica be mixed with water?

Standard fumed silica does not mix well with water because it repels moisture. But treated versions exist that work in water-based systems. If you need it for a water product, choose a hydrophilic or surface-modified grade designed for that purpose.