| Customization: | Available |
|---|---|
| CAS No.: | 7631-86-9 |
| Formula: | Sio2 |
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Fumed silica (also known as pyrogenic silica) is a groundbreaking ultra-fine inorganic nanomaterial produced through an innovative high-temperature vapor-phase hydrolysis. With its remarkably small nanoscale particle size (7-40 nm), exceptionally vast surface area (50-400 m²/g), and superior chemical purity (≥99.8%), it offers unrivaled performance in reinforcement, thickening, and rheology control, ensuring unparalleled results.
This pioneering material is non-toxic, odorless, and free from pollutants, making it the premium choice for sophisticated applications in rubber, coatings, electronics, cosmetics, pharmaceuticals, and beyond. Its distinct attributes-including thermal stability, superb dispersibility, and enhanced surface activity-position it as an indispensable additive across a myriad of 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: Unleash unparalleled strength with a boost in tensile strength reaching up to an impressive 12 MPa, alongside enhanced tear resistance, according to ASTM D624 standards, specifically in HTV/LSR grades.
Transparency: Achieve and maintain over 90% light transmission, a crucial feature for LED encapsulation, ensuring clarity and brilliance in every application.
Thixotropy Control: Master the art of sag resistance, even at substantial film thicknesses exceeding 500+ μm, as certified by ASTM D4402, ensuring durability and stability.
UV Stability: Safeguard against settling in automotive clear coats with proven QUV-A tested UV stability, preserving aesthetics and performance.
Viscosity Modifier: Deliver precise shear-thinning properties in sunscreens, complying with ISO 22716 standards, enhancing consumer experience with smooth application.
Free-Flow Agent: Ensure anti-caking properties in powdered Active Pharmaceutical Ingredients (APIs), validated by USP <476>, for superior flow and handling.
About Us
At Jingdezhen Shengtian Tuyuan Trading Co., Ltd, we proudly lead the charge in the realm of chemical trading, powered by our cutting-edge production facilities. Our extensive expertise spans across industrial, agricultural, and food-grade chemicals, each product a testament to our unwavering dedication to exceptional quality. Our team, comprising over 100 highly experienced professionals, holds prestigious ISO 9001, 14001, and 45001 certifications, along with CE marks, underscoring our unwavering compliance with international standards. This steadfast dedication solidifies our reputation as a trusted partner on the global stage.
Our Strengths
Unmatched Quality & Competitive Pricing- Empowered by a robust factory-backed supply chain, we ensure rigorous quality control paired with cost-effective solutions that offer unbeatable value.
Expansive Product Range- Our diverse range includes pioneering industrial chemicals, state-of-the-art agricultural solutions, and premium food-grade ingredients, each designed to meet varied demands.
Certified Excellence- Our triple ISO certifications and CE marks are emblematic of our unwavering commitment to safety, reliability, and strict adherence to regulatory standards, reinforcing our promise of 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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