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Introduction:
Colloidal Silicon Dioxide, also known as colloidal silica or silica sol, is a fine white powder composed of sub-micron-sized silica particles suspended in a liquid medium. It is typically produced by reacting sodium silicate with acid to form silica gel, which is then purified and dehydrated to obtain colloidal silicon dioxide.
Function:
Colloidal Silicon Dioxide has unique properties that make it a versatile ingredient in various industries. One of its primary functions is as a flow aid or anti-caking agent. It is commonly used in powdered products to prevent clumping and improve powder flowability. Additionally, colloidal silicon dioxide acts as a glidant, enhancing the flow of tablets during the manufacturing process, and as a disintegrant, aiding the breakup of tablets or capsules in the digestive system.
Application:
Colloidal Silicon Dioxide finds applications in a wide range of industries. In the pharmaceutical industry, it is used as an excipient in solid dosage forms such as tablets and capsules. It improves the flow and compressibility of powders, ensuring uniform distribution of active ingredients.
In the food industry, it is used as an additive in powdered products like spices, seasonings, and instant drinks to prevent clumping and improve texture. Colloidal silicon dioxide is also utilized in the cosmetics and personal care industry as a viscosity enhancer, thickening agent, and stabilizer in various formulations.
Additionally, colloidal silicon dioxide has industrial applications, including in paints, coatings, and adhesives, where it acts as a rheology modifier and reinforcement agent.
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