Calcium Carbonate (R21577)

Calcium carbonate is a kind of chemical compound popularly known as limestone.
Its compound formula is CaCO3.
This compound is found mostly in ancient rocks and seashells in nature.
Although calcium carbonate is a member of antacids, excess is biologically harmful.
Calcium carbonate is used extensively in industry in the production of different materials such as marble, chalk and limestone.
Likewise, this compound is extensively used in the production of paint materials.
Calcium carbonate, which is also used in PVC production, is a molecule used in ceramic production.
In the medical field, it is generally used to bind phosphorus in foods and to balance phosphate compounds in chronic kidney failure cases that have lost kidney function and cannot excrete phosphorus in the blood through urine.
(phos-ex) In the field of food, it is used as an additive with the name E170 and in soy milk.
In recent years, it has been seen that calcium carbonate has an important place in ensuring environmental balance.
Calcium carbonate has almost the same properties as other types of carbonate.
Carbon dioxide gas is released when it encounters strong acids:
CaCO3(k) + 2HCl(s) → CaCl2(s) + CO2(g) + H2O(s)
Calcium carbonate, which is also heated up to 840 °C, releases carbon dioxide and calcium oxide and carbon dioxide are formed with an enthalpy of 178 kJ/mol:
CaCO3 → CaO + CO2