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.

(Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9)

Specification of Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9

This hydrophobic fumed silica powder supplies a versatile option. Its look is a penalty, white powder. The powder really feels cosy and light. The mass thickness is reduced, generally between 30 and 50 g/L. It features a high pureness degree. Silicon dioxide (SiO2) material exceeds 99.8%. The CAS Pc Registry Number is 7631-86-9.

The surface area is particularly dealt with. This treatment makes the silica hydrophobic. Water repels it. The powder remains free-flowing in moist problems. Dampness resistance is an essential advantage. This property stops clumping. Handling ends up being simpler.

Area is substantial. It ranges from 100 to 400 m ²/ g. This big surface offers superb support. It improves thickening impacts. Oil absorption is high. The powder soaks up considerable amounts of liquids. It thickens systems properly. Thickness control boosts.

The key fragment size is really tiny. Particle size averages 5 to 30 nanometers. Aggregates develop in the powder. These accumulations develop a three-dimensional network. The network structure enhances performance. It presents thixotropic habits. Pastes and gels flow under shear. They enlarge once again when relaxing.

Loss on drying is minimal. It’s typically below 1.5% after 2 hours at 105 ° C. The ignition loss is additionally low. It drops listed below 2.5% after 2 hours at 1000 ° C. Sieve deposit is small. Fragments larger than 45 microns are unusual. The powder is usually devoid of hefty steels. Arsenic web content is very low. Lead material is really low.

The pH value is slightly acidic. In a 4% aqueous suspension, pH procedures in between 3.7 and 4.5. Safety and security is important. Avoid taking a breath the dirt. Usage appropriate air flow. Use safety tools like handwear covers and safety glasses. Store the powder in an awesome, completely dry location. Maintain the container snugly sealed.

(Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9)

Applications of Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9

Hydrophobic fumed silica powder (CAS 7631-86-9) drives away water. This property is really valuable. It finds lots of applications.

Coatings utilize this powder. It avoids water damage. Surfaces stay shielded much longer. It enhances durability. The finish stands up to wetness successfully. This is very important for exterior usage. It maintains paint looking excellent.

Adhesives and sealers need this powder. It quits water absorption. The bond stays strong. Sealants last much longer. They withstand rain and humidity. This prevents failure. Products carry out dependably.

Cosmetics benefit as well. Powders and foundations utilize it. The powder prevents clumping. It feels smooth on skin. Makeup stays fresh looking. Wetness doesn’t wreck the impact. It boosts appearance substantially.

Drugs rely on its residential or commercial properties. It safeguards tablets and powders. The powder keeps medicines completely dry. This protects against destruction. Shelf life enhances. Item security is better. Security is essential here.

Plastics and rubber integrate it. It strengthens materials. Toughness boosts. The powder enhances circulation. Handling ends up being easier. It works as a thickener. This help production.

Industrial processes utilize it. It manages powder circulation. Dust reductions improves. It prevents material sticking. Handling is simpler. It enlarges fluids effectively. This aids different applications.

Its water resistance is valuable. Many markets depend on it. Performance enhances with its usage.

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 Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9

Here are 5 FAQs about Silicon Dioxide Hydrophobic Fumed Silica (SiO2) Powder, CAS 7631-86-9:

What is hydrophobic fumed silica?
Hydrophobic fumed silica is a specialty powder. It’s made from silicon dioxide. The surface repels water. This powder is ultra-fine. It comes from vaporizing silicon compounds at high heat. Then it gets surface treatment. This treatment blocks water absorption.

Where is hydrophobic fumed silica used?
This powder thickens liquids. It prevents clumping in solids. You find it in paints, coatings, sealants. It helps cosmetics feel smooth. It makes adhesives stronger. It stabilizes drug tablets. It keeps powders flowing freely in food.

Why pick hydrophobic over regular fumed silica?
Regular silica attracts water. Hydrophobic silica doesn’t. That’s key for water-sensitive products. It keeps things dry in humid places. It stops clumping in wet conditions. It mixes better with oils and solvents.

How does hydrophobic fumed silica work?
The surface has special groups. These groups push water away. They come from a chemical reaction. Hydrophilic silica gets treated. Silane agents bond to its surface. This creates a water-repelling layer.

Is hydrophobic fumed silica safe?
It’s generally safe for industrial use. Follow handling rules. Avoid breathing the dust. Wear masks and goggles. Check safety sheets for specifics. Storage should be dry and sealed.

(Silicon Dioxide Hydrophobic Fumed Silica SiO2 Powder Cas 7631-86-9)