| Customization: | Available |
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| CAS No.: | 471-34-1 |
| Formula: | N/a |
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Calcium carbonate (CaCO3) is an inorganic chemical compound that is widely recognized for its significance in various industrial applications and as a natural constituent of the Earth's crust . It is found in numerous forms such as chalk, limestone, marble, and calcite, and is chemically similar across these forms, only differing physically .
Calcium carbonate is produced commercially in two grades: Ground Calcium Carbonate (GCC) and Precipitated Calcium Carbonate (PCC). GCC is derived from natural deposits and has an irregularly rhombohedral crystal shape with a broader size distribution, while PCC is produced through chemical precipitation, resulting in more uniform and regular particles with a narrow size distribution and higher purity .
This compound is used extensively in the manufacturing industry, particularly as a building material in marble, an ingredient in quick lime and cement, and in the production of paints, paper, plastics, and more . In the medical field, calcium carbonate is utilized as an antacid and a calcium supplement, and it also serves as a filler in cosmetics and a pH corrector in swimming pools .
Calcium carbonate is also a key component in agricultural applications, where it is used to neutralize acidic soils and provide essential calcium to plants . Moreover, it is recognized for its role in water and sewer treatment, where it aids in the removal of acidity and impurities .
The compound is prepared industrially by passing carbon dioxide through calcium hydroxide, resulting in the formation of calcium carbonate. This process can also be achieved by combining calcium chloride with sodium carbonate . When heated, calcium carbonate decomposes to produce carbon dioxide and calcium oxide, and it reacts with dilute acids to release carbon dioxide as a by-product .
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