Calcium carbonate is a non-toxic, odorless, non-irritating white powder and one of the most versatile inorganic fillers. Calcium carbonate is neutral, substantially insoluble in water and soluble in acid. According to different calcium carbonate production methods, calcium carbonate can be divided into heavy calcium carbonate and light carbon.

Calcium acid, colloidal calcium carbonate and crystalline calcium carbonate. Calcium carbonate is a common substance on the earth. It is found in rocks such as vermiculite, calcite, chalk, limestone, marble, travertine, etc. It is also the main component of animal bones or shells. Calcium carbonate is an important building material and is widely used in industry.