High Purity: Ensures superior performance in rubber and plastic applications.
Nano Grade Fumed Silica: Enhances material properties with advanced technology.
Product Name: Fumed Silica / Colloidal Silicon Dioxide / Amorphous Fumed Silica
CAS Number: 112945-52-5
EC Number: 231-545-4
HS Code: 2811220000
Molecular Formula: SiO2 Molecular Weight:60.08 g/mol Production Process: Pyrogenic Process (hydrolysis of chlorosilane in hydrogen-oxygen flame) Appearance: White fluffy ultra-fine powder, odorless, non-toxic, tasteless, non-crystalline Grade: Industrial Grade, Food Grade, Cosmetic Grade, Pharmaceutical Grade Key Specifications (CAS 112945-52-5) - Purity (SiO2 Content): ≥ 99.0% - 99.8% Min - Particle Size: 5-40 nm (nano grade, customizable) - Specific Surface Area (BET): 100-400 m²/g (200±20 m2/g as standard) - pH Value: 3.6-4.5 (in 4% suspension) - Moisture Content (Loss on Drying @105℃): ≤ 2.0% - Loss on Ignition @1000℃: ≤ 2.0% (after drying at 105℃ for 2 hours) -
Tamped Density: 40-60 g/L -Type: Hydrophilic Fumed Silica, Hydrophobic Fumed Silica (surface modified) Product Features - Strictly complies with CAS 112945-52-5 standard, high purity, low impurity content, stable chemical properties. - Nano-scale particles (5-40nm), large specific surface area, strong surface activity and adsorption capacity, excellent reinforcement and thickening performance. - Good thermal stability, high temperature resistance (melting point >1600℃), chemical inertness, non-toxic and environmentally friendly, compliant with global environmental standards. - Dual types available (hydrophilic/hydrophobic), good compatibility with rubber, plastic, coating, ink, cosmetics and pharmaceutical products. - Excellent thixotropy and anti-settling properties, effectively improving product performance and processing stability. - Non-dangerous goods, easy to transport and export; factory direct supply, large stock, competitive price and stable supply capacity.

Hubei Meishu Technology Co., Ltd. is an integrated high-tech enterprise specializing in chemical solutions for petrochemical, industrial manufacturing, and water treatment. Established in 2024, it offers nano-grade fumed silica for rubber and plastic with high purity and long warranty. The company provides customizable solutions and comprehensive services, including multiple delivery terms and payment options.

Main Applications 1. Rubber & Plastic Industry: Reinforcing agent for natural rubber and synthetic rubber, improving tensile strength, tear resistance and wear resistance; modifier for engineering plastics to enhance rigidity and heat resistance. 2. Coating & Ink Industry: Thixotropic agent and anti-settling agent, preventing pigment settling, improving coating adhesion, scratch resistance and gloss; suitable for water-based and solvent-based systems. 3. Adhesive & Sealant: Thickening and reinforcing agent, improving adhesion, weather resistance and aging resistance; ensuring uniform dispersion and stable performance. 4. Pharmaceutical & Cosmetics: Pharmaceutical excipient (flow aid, adsorbent, disintegrant); cosmetic additive (thickening, anti-caking, improving skin feel), compliant with USP, EP, JP standards. 5. Food Industry: Food additive, used as anti-caking agent and flow aid for powdery food products. 6. Chemical & Catalyst Industry: Catalyst carrier, adsorbent, desiccant, used in organic synthesis, gas purification and chemical mechanical polishing. 7. Other Fields: Used in textile, paper, glass, ceramic and electronic industries, playing the role of reinforcement, thickening and modification. Packaging - Small Sample Packaging: 1kg / 5kg aluminum foil bag (double zip bags inside) for quality testing. - Standard Packaging: 10kg / 20kg / 25kg PE bag with inner aluminum foil bag (moisture-proof, anti-caking, anti-static). - Bulk Packaging: 500kg / 1000kg jumbo bag (for large orders, convenient for loading and unloading).