Precipitated silica is a form of synthetic amorphous silicon dioxide produced through the precipitation of a solution containing sodium silicate and sulfuric acid. It is commonly used in various industries due to its properties, such as high surface area, porosity, and chemical stability. Here are key details:

Chemical Formula: SiO₂

Appearance: White, powdery, and odorless.

Production: Made by acidifying a sodium silicate solution, which causes the silica to precipitate out as a fine, amorphous powder.

Applications:

1. Tires & Rubber: Enhances durability and reduces rolling resistance in tires.
2. Toothpaste: Used as an abrasive and thickening agent.
3. Food Industry: Acts as an anti-caking agent in powdered food products.
4. Cosmetics: Serves as a thickening agent or absorbent.
5. Industrial Uses: Found in paints, coatings, adhesives, and plastics for its reinforcing properties.

Properties:

1. High porosity
2. High absorbency
3. Chemically inert
4. Non-toxic and eco-friendly

Precipitated silica is valued for its versatility and wide range of industrial applications.