Calcium carbonate has different uses including as a dietary supplement, an antacid and chalk. Other uses include as limestone and marble in the construction and manufacturing industries. Calcium carbonate has the chemical formula CaCO3.
In nature, marble, limestone and chalk contain calcium carbonate. By processing calcium carbonate from marble, one obtains precipitated calcium carbonate, which is ground into a powder called ground calcium carbonate. Ground calcium carbonate has many industrial, medicinal and pharmaceutical uses.
In the construction industry, limestone is necessary for making lime mortar. Likewise, marble is a building material also used in this industry. In different manufacturing industries, calcium carbonate is an ingredient utilized as filler in paper, paint, sealants and coatings.
Calcium carbonate also has many applications in agriculture and the food industry. Some agricultural uses of this substance are as animal feed and agricultural lime for soil. Many foods and cooking products, such as baking powder, dough and dry mixes also contain calcium carbonate. It is also an ingredient in toothpaste.
Another use of calcium carbonate is in medicine, where its applications include as a supplement to treat calcium deficiencies and an antacid for heartburn and indigestion. As an antacid, calcium carbonate is available in different forms, such as chewable tablets, liquids and capsules.