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.

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

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

Nano Silicon Dioxide Amorphous Silica Powder HB-620 (CAS 112945-52-5) is a hydrophobic fumed silica engineered for high-performance applications requiring enhanced surface area adjustment. This synthetic, ultra-fine SiO ₂ powder is produced via flame hydrolysis of silicon tetrachloride, complied with by surface therapy with organosilane substances to attain permanent hydrophobicity. Its amorphous framework guarantees reduced reactivity and superb thermal stability, making it optimal for usage sought after industrial atmospheres.

** Key Requirements **:.
– ** Chemical Solution **: SiO ₂ (≥ 99.8% purity).
– ** Look **: White, free-flowing powder.
– ** Bit Size **: Primary fragments ordinary 7– 40 nm, with aggregates developing a permeable structure.
– ** Area **: 150– 300 m ²/ g (BET method).
– ** Bulk Density **: 40– 60 g/L (untapped).
– ** Hydrophobicity **: Surface changed to fend off water, with a get in touch with angle > 120 °
. -** Loss on Drying (105 ° C) **: ≤ 1.5%.
– ** pH **: 3.6– 5.5 (4% liquid dispersion).
– ** SiO ₂ Material **: ≥ 99.8%.

** Functional Residences **:.
HB-620 stands out as a rheology modifier, anti-settling representative, and thickening additive in solvent-based systems. Its hydrophobic nature stops clumping in moist conditions and boosts compatibility with non-polar matrices like silicones, resins, and polymers. The high surface area and nano-scale structure improve mechanical reinforcement, abrasion resistance, and thermal conductivity in composites.

** Applications **:.
Commonly made use of in coverings, adhesives, sealants, and elastomers (SITUATION) to regulate viscosity, sag resistance, and UV security. It functions as a matting representative in paints, a free-flow agent in powders, and a reinforcing filler in silicone rubber. In cosmetics, it enhances texture in sun blocks and foundations. Pharmaceutical formulas leverage it for tablet flowability and drug stabilization.

** Handling & Safety and security **:.
Non-toxic however needs precautions to stay clear of dust inhalation. Use PPE (gloves, masks) throughout handling. Shop in a great, dry place, sealed to stop dampness absorption. Compatible with a lot of organic solvents but avoid strong acids/bases.

** Regulatory Compliance **:.
Satisfies REACH, RoHS, and FDA (indirect food contact) standards. Appropriate for industrial and consumer items calling for high-performance silica additives.

HB-620 incorporates nano-technology with customized hydrophobicity, providing adaptability in improving item efficiency throughout markets while making sure safety and governing adherence.

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

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

Nano silicon dioxide amorphous silica powder HB-620 (CAS 112945-52-5) is a hydrophobic fumed silica dealt with to boost its compatibility with non-polar systems. This high-purity, artificial SiO ₂ product is engineered with a surface adjustment that imparts water-repellent buildings, making it ideal for applications needing dampness resistance, enhanced dispersion, and boosted mechanical efficiency. Its unique combination of tiny fragment size (nanoscale), huge area, and reduced mass thickness enables it to function as a flexible additive throughout industries.

** Coatings and Inks **: HB-620 is widely used in solvent-based and UV-curable finishings to manage rheology, avoid sagging, and enhance anti-settling properties. Its hydrophobic nature makes sure stability in humid atmospheres, decreasing water absorption and enhancing coating toughness. In inks, it helps in accomplishing matte coatings and boosting abrasion resistance.

** Adhesives and Sealers **: The powder works as a thixotropic agent, supplying thickness control and preventing depression in adhesives and sealants. Its wetness resistance makes certain long-lasting efficiency in outside or high-humidity applications, such as building or automotive sealants.

** Plastics and Composites **: HB-620 boosts the mechanical stamina, thermal stability, and surface smoothness of polymer composites. By lowering dampness uptake, it improves dimensional stability in design plastics, making it ideal for electronic components and auto parts.

** Cosmetics and Personal Treatment **: In sunscreens, lotions, and powders, HB-620 acts as a thickening agent and provides a smooth structure. Its hydrophobicity assists support formulas against water separation and boosts water resistance in items like make-up.

** Pharmaceuticals **: Utilized as a circulation help in tablet manufacturing, it ensures consistent powder mixing and stops caking. The hydrophobic surface area modification is essential for moisture-sensitive medicine formulas.

** Electronic devices **: HB-620 is integrated into encapsulants and potting compounds to secure electronic elements from humidity-induced destruction. It also boosts the dielectric residential or commercial properties of protecting materials.

** Environmental Applications **: Its oil-absorbing residential properties make it helpful in oil spill remediation products, where it precisely binds hydrocarbons while pushing back water.

HB-620’s surface treatment makes sure simple incorporation right into natural matrices without jumble, enabling constant efficiency. It follows worldwide regulatory requirements, including REACH and RoHS, making certain security in diverse applications. With its tailored hydrophobicity and nanoscale results, HB-620 is a vital additive for optimizing product efficiency popular atmospheres.

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

**What is HB-620 Hydrophobic Fumed Silica?** HB-620 is a high-purity nano silicon dioxide (SiO₂) powder treated to become hydrophobic. It is produced via flame hydrolysis, creating amorphous silica with a surface modified by organosilane compounds. This treatment enhances compatibility with non-polar systems, making it ideal for applications requiring water repellency, improved dispersion, and reinforcement in polymers, coatings, and adhesives. CAS 112945-52-5 confirms its chemical identity.

**Why is HB-620 considered hydrophobic?** The hydrophobicity stems from a surface treatment with silane agents, which replace hydrophilic silanol groups (-OH) on the silica surface with non-polar organic groups. This reduces moisture absorption and improves compatibility with hydrophobic matrices like plastics, resins, and oils. The result is a stable, free-flowing powder that resists clumping in humid conditions.

**What are the primary applications of HB-620?** HB-620 is widely used in silicone rubber, coatings, inks, and sealants to enhance thixotropy, anti-settling, and reinforcement. It acts as a thickening agent in adhesives, improves scratch resistance in paints, and serves as an anti-caking agent in cosmetics or pharmaceuticals. Its hydrophobicity makes it suitable for waterproofing applications in construction materials and electronics.

**How should HB-620 be handled safely?** Wear PPE (gloves, goggles, mask) to avoid inhalation or contact. While non-toxic, fine particles may irritate lungs or eyes. Use in well-ventilated areas. Store away from moisture and incompatible substances like strong acids or bases. Spills should be swept up promptly; avoid water to prevent unintended reactions.

**What is the shelf life and storage recommendation?** HB-620 remains stable for up to two years when stored in a sealed container at room temperature (15–25°C) in a dry environment. Exposure to humidity or high temperatures may degrade performance. Ensure packaging is airtight to preserve its hydrophobic properties and prevent contamination.

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