kalsiumkarbonaattiyhdisteistä

Calcium carbonate, often abbreviated as CaCO3, is a chemical compound widely found in nature. It is a white, odorless powder or colorless crystal, and it is one of the most common calcium salts. Calcium carbonate is a principal component of limestone, marble, and chalk. It is also found in the shells of marine organisms, snails, pearls, eggshells, and the exoskeleton of crustaceans.

Calcium carbonate has a molecular weight of 100.09 g/mol and a melting point of 825°C. It is slightly soluble in water, with a solubility of approximately 1.48 g/L at 25°C. The compound is stable in air and does not decompose at room temperature.

Calcium carbonate is used in various industries. In the construction industry, it is used as a building material and as a component of cement. In the pharmaceutical industry, it is used as an antacid and a calcium supplement. In the food industry, it is used as a firming agent and a leavening agent. It is also used in the production of toothpaste, as an abrasive agent.

Calcium carbonate can be produced synthetically through various methods, including the reaction of calcium oxide with carbon dioxide, the reaction of calcium hydroxide with carbon dioxide, and the reaction of calcium chloride with sodium carbonate. It can also be extracted from natural sources such as limestone, marble, and chalk.

Calcium carbonate is generally recognized as safe by the U.S. Food and Drug Administration and is widely used in food and dietary supplements. However, high doses of calcium carbonate can cause side effects such as constipation, abdominal pain, and gas. It is important to consult a healthcare provider before taking calcium carbonate supplements, especially if you have any medical conditions or are taking other medications.