| Customization: | Available |
|---|---|
| CAS No.: | 7631-86-9 |
| Formula: | Sio2 |
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Fumed silica (also known as pyrogenic silica) is a pioneering and revolutionary ultra-fine inorganic nanomaterial manufactured through state-of-the-art high-temperature vapor-phase hydrolysis. With its incredibly small nanoscale particle size (7-40 nm), exceptionally vast surface area (50-400 m²/g), and unparalleled chemical purity (≥99.8%), it offers astounding performance in reinforcement, thickening, and rheology control.
This cutting-edge material is non-toxic, odorless, and environmentally friendly, making it the perfect choice for high-end applications in rubber, coatings, electronics, cosmetics, pharmaceuticals, and beyond. Its distinctive properties, including thermal stability, remarkable dispersibility, and outstanding surface activity-render it an indispensable additive across numerous industries.
| Property | Specification | Test Method | Grade Variations |
|---|---|---|---|
| SiO2 Purity (%) | ≥99.8 | ISO 3262 | Electronic Grade: ≥99.9% |
| Primary Particle Size | 7-40 nm | TEM | Ultra-Fine: 5-15 nm (CMP Slurries) |
| BET Surface Area (m²/g) | 50-400 | ISO 9277 | High-SSA: 300-400 (Silicone Rubber) |
| Tapped Density (g/L) | 30-100 | ISO 787-11 | Low-Density: <50 (Aerogels) |
| pH (4% Dispersion) | 3.6-4.5 | ISO 787-9 | Neutralized: 6.0-7.0 (Pharma) |
| Loss on Ignition (%, 950°C) | ≤1.0 (Hydrophilic) | ISO 3262-20 | Hydrophobic: ≤2.5% |
| Carbon Content (Hydrophobic, %) | 0.5-5.0 | ASTM D1993 | High-Modification: 5-10% (Silylated) |
| Oil Absorption (g/100g) | 150-350 | ASTM D2414 | Low-Oil: 100-150 (Coatings) |
Mechanical Boost: Elevate the durability and resilience of your silicone products with our High Purity Silica, designed to significantly increase tensile strength up to an impressive 12 MPa, alongside enhanced tear resistance, as verified by ASTM D624 standards in HTV/LSR grades.
Transparency: Ensure crystal-clear applications with our silica, achieving greater than 90% light transmission. This transparency is crucial, especially in applications like LED encapsulation, where clarity is paramount.
Thixotropy Control: Our silica empowers your formulations with superb sag resistance, even at film thicknesses exceeding 500 μm, tested rigorously under ASTM D4402 parameters to ensure performance is consistently reliable.
UV Stability: Enhance the longevity and clarity of automotive clear coats. Our silica prevents pigment settling, scientifically proven through stringent QUV-A testing, ensuring your coatings maintain their pristine appearance.
Viscosity Modifier: Achieve the perfect texture and application for sunscreens with our silica, providing exceptional shear-thinning properties compliant with ISO 22716, ensuring smooth, non-greasy formulations.
Free-Flow Agent: Our silica acts as a premier anti-caking agent in powdered APIs, meeting the rigorous standards of USP <476>, facilitating hassle-free production and application processes.
About Us
At Jingdezhen Shengtian Tuyuan Trading Co., Ltd, we are proud to be leaders in the chemical trading industry, boasting cutting-edge production facilities that set us apart. Our specialized range encompasses industrial, agricultural, and food-grade chemicals, each product exemplifying our relentless pursuit of unmatched quality. Our diverse team of over 100 seasoned professionals brings extensive expertise, fortified by ISO 9001, 14001, and 45001 certifications along with CE marks, underscoring our strict adherence to international standards. This steadfast commitment elevates us to a coveted position as a trusted partner globally.
Our Strengths
Quality & Competitive Pricing- Our supply chain, reinforced by a strong factory backing, ensures rigorous quality control while offering cost-effective solutions that stand out in the market.
Diverse Product Range- We provide cutting-edge industrial chemicals, innovative agricultural solutions, and premium food-grade ingredients, each crafted to meet a wide array of customer needs with precision.
Certified Excellence- Our distinguished triple ISO certifications and CE marks are clear indicators of our steadfast dedication to safety, reliability, and regulatory compliance, fortifying our pledge of exceptional excellence.
Q1: Are you a manufacturer or a trader?
We are an integrated industrial and trading company.
Q2: Do you have a stable production facility?
Yes, we operate a 2,000+ sqm factory, ensuring stable supply and consistent quality.
Q3: Where do you ship from, and how long is the lead time?
We ship from Tianjin Port, China. Lead time is 7-15 days after deposit (sample orders: 3-5 days).
Q4: Do you offer free samples?
Yes! Samples are free, but freight is paid by the buyer. Custom formulations require a small fee.
Q5: Do prices drop for bulk orders?
Yes! Prices are negotiable based on volume. Contact us for the lowest quote (raw material prices fluctuate, so we adjust accordingly).
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