Precipitated calcium carbonate (PCC) is a mineral product derived from lime, which has many industrial applications. It is made by hydrating high-calcium quicklime. It is then reacted with carbon dioxide. The resulting product can be used in a variety of industries to supplement a variety of processes. There are two main types of PCC: surface treated and untreated powders. Surface treatments on PCC include fatty acids such as stearic acid for water-based applications and alkyl sulfates for oil-based paints. Untreated PCC is used more in non-coatings applications like plastic compounds and elastomers. Both treated and untreated PCC are available as a dry powder or slurry.

Precipitated calcium carbonate finds its usage in many applications, like drugs, paints, papers, rubbers, plastics, rubbers, and more. Its high purity, well-controlled particle size distribution, and low oil absorption make it ideal for these applications. The main advantages of using precipitated calcium carbonate are improved optical properties (better gloss), higher brightness and/or opacity, and improved ink receptivity.

Calcium carbonate, including PCC, is a naturally occurring mineral. It is considered to be non-toxic. However, it can irritate the stomach if swallowed in large amounts.

PCC is typically made using minerals such as limestone or marble, which are composed primarily of calcium carbonate (CaCO3). These materials are ground into a fine powder that is mixed with water to form a slurry. An acid such as sulfuric acid or carbon dioxide is added to the slurry to convert the CaCO3 into calcium sulfate (CaSO4) or calcium carbonate (CaCO3) respectively. The resulting PCC crystals have an average particle size between 0.1-5 microns depending on the method used.

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