Calcium Carbonate Precipitated (PCC) is a refined, synthetic form of calcium carbonate. It is made by reacting calcium hydroxide (Ca(OH)₂) with carbon dioxide (CO₂) to form CaCO₃. Here are some key details:

Chemical Formula: CaCO₃.

Purity: High purity and finer particle size compared to natural calcium carbonate.

Production Process: Produced through chemical precipitation, which allows control over the properties like size, shape, and crystal form.

Uses:

1. Industrial Filler: Used in plastics, rubber, paper, paints, and coatings to improve texture and performance.
2. Pharmaceuticals: Used as a calcium supplement and in antacids.
3. Food Industry: Acts as a dietary calcium source and acidity regulator.

Forms: Available in different crystalline forms—calcite, aragonite, and vaterite.

It is valued for its high whiteness, brightness, and ability to improve product performance.