Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which is a type of sedimentary rock consisting mainly of calcite) and is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium Carbonate Powder Technical is a chemical compound used in various industries such as construction, pharmaceuticals, and food. It is commonly used as a filler, coating agent, and whitening agent in products such as toothpaste, paper, and plastics. It is also used as a dietary supplement to provide calcium to the body. Its high purity and fine particle size make it ideal for use in a wide range of applications.