Silicon Dioxide Colloidal, also known as Fumed Silica or Pyrogenic Silica, is a form of silicon dioxide with the chemical formula SiO₂. Identified by CAS number 7631-86-9, it is a crucial raw material in numerous industries due to its unique properties. Unlike crystalline forms of silica such as quartz, colloidal silicon dioxide is amorphous, meaning it lacks a long-range ordered crystalline structure. This amorphous nature, combined with an extremely small particle size and a very high surface area, grants it exceptional functional characteristics.

Produced through the flame hydrolysis of silicon tetrachloride in an oxygen-hydrogen flame, colloidal silicon dioxide forms primary particles that aggregate into chain-like or three-dimensional networks. The specific surface area and particle size distribution can be controlled during manufacturing, leading to different grades optimized for various applications. Typically presenting as a white, light powder, it is virtually insoluble in water and organic solvents but dissolves in hydrofluoric acid and hot concentrated alkaline solutions. Its high purity and lack of porosity in primary particles differentiate it from precipitated silica.

The applications of colloidal silicon dioxide are remarkably diverse. In the pharmaceutical industry, it is widely employed as a glidant and flow aid for powders and granules during tablet and capsule manufacturing. Its ability to adsorb moisture and coat particles reduces friction, improving powder flow and ensuring consistent fill weights and tablet uniformity. It also functions as a disintegrant, helping solid dosage forms break apart in the gastrointestinal tract, and as an adsorbent for liquid active pharmaceutical ingredients, converting them into powders for tableting.

The food industry benefits significantly from its use as an anti-caking agent (E551). It prevents powders like spices, coffee, sugar, and powdered milk from clumping, ensuring they remain free-flowing and easy to handle. Its ability to adsorb moisture makes it effective in preserving the quality and extending the shelf life of various food products.

In cosmetics and personal care products, colloidal silicon dioxide serves multiple purposes. It acts as a thickener and suspending agent in lotions and creams, providing texture and stability. As an abrasive and bulking agent, it is found in toothpastes and scrubs. Its oil absorption properties also make it valuable in mattifying cosmetic formulations.

Beyond pharmaceuticals, food, and cosmetics, colloidal silicon dioxide finds extensive use in various industrial applications. It is a key rheology modifier, enhancing the viscosity and thixotropy of liquids such as paints, coatings, and adhesives. Its high surface area allows it to reinforce silicone rubber and plastics, improving their mechanical strength and durability. It is also used as a filler and anti-settling agent in paints and inks, preventing pigments from settling and ensuring color consistency. In the field of agriculture, while less common than in other areas, specific grades can act as a carrier for certain active ingredients or as a flow agent for powdered fertilizers.

The versatility and essential functions of Silicon Dioxide Collooidal make it a highly sought-after raw material globally. Industries requiring reliable performance depend on suppliers capable of consistently providing high-quality material that meets stringent specifications for particle size, surface area, purity, and bulk density. Sourcing this material from a reputable silicon dioxide colloidal manufacturer is paramount to ensure product quality and manufacturing efficiency.

Prospective buyers exploring the market for this versatile chemical should consider various factors, including the grade required for their specific application, necessary certifications (such as GMP for pharmaceutical use), packaging options, and lead times. Understanding the typical silicon dioxide colloidal price range in the market is also essential for budgeting and procurement planning. The global supply chain for chemicals like Silicon Dioxide Colloidal requires robust logistics and quality control from the source to the final destination.

For businesses looking to buy silicon dioxide colloidal, partnering with an experienced silicon dioxide colloidal supplier is crucial. A reliable supplier can offer technical support, provide necessary documentation, and ensure timely delivery. Whether the need is for small research quantities or bulk industrial volumes, finding a trusted partner simplifies the procurement process. NINGBO INNO PHARMCHEM CO.,LTD. is committed to being a dependable source for high-quality Silicon Dioxide Colloidal, supporting diverse industry needs with consistent product excellence and professional service. We aim to provide clear information on how to purchase silicon dioxide colloidal tailored to specific requirements, ensuring a smooth and efficient transaction for all our clients.