Precipitated Silica Powder Supplier for Bulk Industrial Use
Precipitated silica (CAS Number 112926-00-8) is a high-purity, porous amorphous silicon dioxide engineered via a specialized wet chemical process. As a leading global precipitated silica manufacturer, KOSNANO supplies premium synthetic silica . We tightly controlled particle sizes from 0.05 um to 5.0 um, an extensive specific surface area of 30 to 250 m2/g, and up to 99.3% chemical purity. Our bulk amorphous silica products act as high-performance rubber reinforcing agents, food anti-caking additives, and toothpaste abrasives, fully satisfying international ISO 9001, REACH, and food-grade supply standards.
In addition to precipitated silica, KOSNANO also offers lipophilic nanosilica, silica aqueous dispersions, and nanosilica powder. Our team can provide high-purity nanosilica in various particle sizes to meet your diverse application needs. – Get your silica powder price now!
Precipitated silica powder
precipitated silica cas number ：112926-00-8
If the silica you choose is for use in rubber, tires, toothpaste, coatings, or food, precipitated silica is also a good choice. It is one of the most widely used silicas. Unlike the fumed silica method, precipitated silica is produced by a wet process, which involves reacting the chemical solvent sodium silicate with sulfuric acid and CO2, and precipitating it in an aqueous solution. After filtering, washing, and drying, a porous structure, low density, and high specific surface area silica is obtained.
Key Product Grades & Application-Specific Technical Data
What are the definitive performance differences between KOSNANO’s sub-micron and micron precipitated silica grades?
Our ultra-fine Precipitated Silica 0.05 um grade delivers an optimized specific surface area exceeding 200 m2/g, offering maximum chemical absorption capacity as an elite anti-caking agent for powder food formulations. The mid-range Precipitated Silica 1.0 um grade balances porosity and structural hardness, making it a globally favored abrasive silica ingredient for advanced whitening toothpaste formulations. For heavy industrial compounding, our Precipitated Silica 5.0 um grade yields high mechanical reinforcing effects, capable of replacing up to 30% of carbon black filler in green passenger tires and high-performance industrial rubber products.
How does KOSNANO execute the manufacturing process to guarantee stable pH and low impurity levels?
KOSNANO utilizes a highly automated wet process that precisely reacts industrial-grade sodium silicate with sulfuric acid under a continuous CO2 gas precipitation matrix. The synthesized slurry undergoes multi-stage filtration and meticulous washing cycles to ensure the final washed amorphous silica maintains a strictly neutral pH range of 6.5 to 7.5. Our automated spin-flash drying technologies guarantee the ultimate residual moisture content is held safely under 6.0%, completely preventing pellet agglomeration during long-term maritime container storage.
Technical Comparison: Precipitated Silica vs Fumed Silica
| Physical & Chemical Property | Amorphous Precipitated Silica (Wet Process) | Fumed Silica / Pyrogenic Silica (Dry Process) |
| Primary Particle Size | 10 nm to 100 nm (Aggregates up to 5 um) | 5 nm to 50 nm (Aggregates up to 200 nm) |
| Specific Surface Area (BET) | 30 to 250 m2/g | 100 to 400 m2/g |
| Manufacturing Method | Reaction of Sodium Silicate with Sulfuric Acid | Hydrolysis of Silicon Tetrachloride in Flame |
| Bulk Density (Pack Vol.) | Higher Bulk Density (Approx. 120 to 200 g/L) | Ultra-Low Bulk Density (Approx. 30 to 60 g/L) |
| Primary Application Focus | Reinforcement, Anti-Caking, Toothpaste Abrasives | Thixotropy, Liquid Rheology Control, Anti-Sagging |
| Wholesale Price Index | Highly Cost-Effective Commercial Bulk Pricing | Premium Tech-Grade Specialization Cost Structure |
Related Products
Precipitated silica 5.0 μm
KOSNANO supports verified international procurement teams with a flexible Minimum Order Quantity (MOQ) starting at 1 Full Container Load (1 FCL, accommodating approximately 10 to 12 metric tons depending on pallet configuration). Every export batch is fully declared under global Customs HS Code 2811220000 and comes accompanied by official Technical Data Sheets (TDS), Material Safety Data Sheets (MSDS), and certified batch-specific Certificate of Analysis (COA) documents. Standardized packaging includes multi-layer 20kg moisture-proof synthetic bags, or heavy-duty 500kg transport-ready jumbo supersacks deployed directly from our Guangzhou logistics hub.
Looking for other industrial specifications?
Beyond wet-process amorphous grades, KOSNANO masters a full spectrum of advanced silicon dioxide powder solutions, including pyrogenic fumed silica, hydrophobic nano-powders, and specialized technical ceramic carriers to fit your precise formulation needs.