| Customization: | Available |
|---|---|
| CAS No.: | 7631-86-9 |
| Formula: | Sio2 |
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Fumed silica, also celebrated as pyrogenic silica,represents a visionary advancement in ultra-fine inorganic nanomaterials, crafted through a sophisticated high-temperature vapor-phase hydrolysis process. With its remarkably delicate nanoscale particle size (7-40 nm), paired with anexceptionally high surface area (50-400 m²/g) , andoutstanding chemical purity (≥99.8%), this marvel of engineering delivers exceptional performance in reinforcement, thickening, and rheology control. This state-of-the-art material isharmless, odor-free, and environmentally friendly,
making it the perfect choice for premium applications in industries such as rubber, coatings, electronics, cosmetics, pharmaceuticals, and beyond. With its unique attributes, such asthermal stability, outstanding dispersibility, and dynamic surface activity, it stands as an indispensable additive that amplifies product efficacy across various sectors.
| 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 your product's durability with increased tensile strength reaching up to 12 MPa, and enhanced tear resistance according to ASTM D624 standards, specifically tailored for HTV/LSR grades.
Transparency: Achieve optimal clarity with over 90% light transmission, a crucial factor for superior LED encapsulation.
Thixotropy Control: Experience advanced sag resistance with this agent enabling over 500 μm film thickness, meticulously tested against ASTM D4402.
UV Stability: Ensure long-lasting performance by preventing settling in automotive clear coats, rigorously tested with QUV-A standards.
Viscosity Modifier: Achieve superior texture in sunscreens with this shear-thinning modification, fully compliant with ISO 22716 standards.
Free-Flow Agent: Enhance the quality of powdered APIs with anti-caking properties, adhering to stringent USP <476> standards.
Discover About Us
At Jingdezhen Shengtian Tuyuan Trading Co., Ltd, we proudly occupy a leading position in the dynamic world of chemical trading. Our state-of-the-art production facilities are a testament to our dedication to innovation and excellence. Specializing in industrial, agricultural, and food-grade chemicals, we are committed to delivering quality that surpasses expectations. With a team of over 100 dedicated professionals, we proudly hold ISO 9001, 14001, and 45001 certifications, alongside CE marks, symbolizing our unwavering adherence to global standards. This solidifies our reputation as a preferred and trusted partner internationally.
Our Impressive Strengths
Unrivaled Quality & Smart Pricing- Supported by a robust and efficient factory-backed supply chain, we ensure the highest quality control standards while maintaining economically advantageous solutions.
Varied and Inclusive Product Range- Our comprehensive offerings feature groundbreaking industrial chemicals, innovative agricultural solutions, and premium food-grade ingredients, thoughtfully designed to meet a wide variety of demands.
Certified Distinction and Excellence- Our coveted triple ISO certifications and CE marks are reflective of our steadfast commitment to achieving the utmost safety, dependability, and strict adherence to regulatory norms, underscoring our promise of exceptional quality.
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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