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 nano silicon dioxide amorphous silica power HB-620 CAS 112945 52 5 sio2 treated fumed silica hydrophobic

HB-620 Hydrophobic Fumed Silica– High-Purity Amorphous Nano Silicon Dioxide

Product Summary

HB-620 is a hydrophobic fumed silica made from high-purity amorphous silicon dioxide (SiO ₂). It brings CAS number 112945-52-5. This nano-grade powder is surface-treated to ward off water, making it optimal for applications where moisture resistance is crucial.

Key Features

The product looks like a fine, free-flowing white powder. Its particles are nano-sized and form loose agglomerates that break apart conveniently throughout mixing. Due to the fact that it is hydrophobic, HB-620 does not take in water from the air. This helps keep steady performance in humid atmospheres. The product reveals excellent thickening and anti-settling buildings in non-polar systems like oils, materials, and solvents.

Technical Specs

– Chemical Call : Hydrophobic fumed silica
– CAS Number : 112945-52-5
– Molecular Formula : SiO ₂.
– Appearance : White, fluffy powder.
– Surface area Therapy : Dimethylsiloxane or similar organosilicon compound.
– Specific Surface (WAGER) : ~ 200 m ²/ g.
– Loss on Drying (105 ° C, 2 humans resources) : ≤ 1.5%.- Ignition Loss (1000 ° C, 2 humans resources) : 10– 20%.
– pH (4% diffusion in water) : Not relevant (hydrophobic).
– Bulk Thickness : 40– 80 g/L.

Common Applications

HB-620 works well in adhesives, sealers, coatings, and inks. It avoids pigment settling and controls flow without affecting clearness. In cosmetics, it enhances appearance and oil absorption. Industrial individuals include it to lubricating substances and oils to improve security and prevent leakage. The powder likewise serves as a reinforcing filler in silicone rubber and other polymers.

Always manage with care. Use correct air flow and wear safety equipment to prevent breathing or skin contact. Store in a dry, closed container away from moisture.

Applications of nano silicon dioxide amorphous silica power HB-620 CAS 112945 52 5 sio2 treated fumed silica hydrophobic

Applications of Hydrophobic Nano Silicon Dioxide (Amorphous Silica Powder HB-620)

Enhanced Efficiency in Coatings and Paints

HB-620 is a hydrophobic fumed silica treated with special surface chemistry. It functions well in paints and commercial layers. This additive quits liquids from taking in. It likewise assists the covering resist water, oil, and dust. The outcome is a cleaner, longer-lasting surface that remains smooth and also gradually.

Rheology Control in Adhesives and Sealants

In adhesives and sealers, HB-620 offers much better control over density and circulation. It quits the product from sagging or trickling after application. Also under stress and anxiety or warmth, the item holds its form. This makes installation much easier and enhances last efficiency.

Stability in Cosmetics and Personal Care

Elegance items like structures, powders, and sunscreens make use of HB-620 to remain stable and feel light on the skin. It takes in excess oil without drying out the skin. The powder likewise aids various other components blend uniformly and remain put on hold, so the product functions the very same every time you utilize it.

Boosted Handling in Plastics and Rubber

When included in plastics or rubber substances, HB-620 increases stamina and put on resistance. It also aids these products circulation much better during molding or extrusion. This results in less flaws and faster production cycles. The hydrophobic nature makes sure dampness does not weaken the final part.

Specialty Uses in Electronics and Pharmaceuticals

In electronics, this silica maintains sensitive parts completely dry and shielded. In drugs, it functions as a free-flow agent in powders and tablets. Its pureness and regular bit dimension make it safe and trustworthy for high-standard applications.

This hydrophobic nano silica satisfies rigorous top quality requirements. It lugs CAS number 112945-52-5 and is known for trustworthy results throughout numerous markets.

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 nano silicon dioxide amorphous silica power HB-620 CAS 112945 52 5 sio2 treated fumed silica hydrophobic

Frequently Asked Questions About Hydrophobic Fumed Silica HB-620

What is HB-620 hydrophobic fumed silica?

HB-620 is a nano-sized amorphous silica powder. Its CAS number is 112945-52-5. The material starts as regular fumed silica but gets treated to become water-repellent. This treatment gives it strong hydrophobic properties, so it does not absorb moisture easily.

Where is this product used?

This silica is common in coatings, adhesives, sealants, and cosmetics. It helps thicken liquids, prevent clumping, and improve texture. Because it repels water, it also boosts durability in wet or humid conditions. Many manufacturers choose it for high-performance formulations.

How does HB-620 differ from regular fumed silica?

Regular fumed silica attracts water. HB-620 has been surface-treated with special chemicals that block water absorption. This makes it ideal for products that must stay dry or stable in damp environments. The treatment also changes how it mixes with oils and organic solvents.

Is HB-620 safe to handle?

Yes, but standard safety steps are needed. Wear gloves and a mask when handling the fine powder. Avoid breathing in dust. Store it in a dry, sealed container away from moisture. Always follow the safety data sheet (SDS) guidelines for best practices.

How should I store HB-620?

Keep HB-620 in its original packaging or an airtight container. Store it in a cool, dry place. Even though it is hydrophobic, long exposure to humid air may affect performance over time. Use clean, dry tools when scooping the powder to avoid contamination.