cas number for calcium carbonate

Understanding Calcium Carbonate CAS Number and Its Importance

Calcium carbonate, with the Chemical Abstracts Service (CAS) number 471-34-1, is one of the most versatile and widely used chemical compounds in various industries. This compound, composed of calcium (Ca), carbon (C), and oxygen (O), is primarily found in nature in the form of minerals such as limestone, chalk, and marble. Its extensive uses range from the food and pharmaceutical industries to construction and environmental applications.

Chemical Structure and Properties

The molecular formula for calcium carbonate is CaCO3. It forms a white solid at room temperature and is known for its high stability. When heated or treated with acids, it decomposes to produce carbon dioxide (CO2) and calcium oxide (CaO). This property makes it useful in various chemical processes. Furthermore, calcium carbonate is relatively inexpensive, making it an attractive option for many applications.

1. Construction Industry Calcium carbonate is a key ingredient in cement and concrete production. It is used as a filler in construction materials, enhancing their density, strength, and durability. Additionally, crushed limestone, a form of calcium carbonate, is used in road base and construction aggregates.

2. Agriculture In agriculture, calcium carbonate serves multiple purposes. It acts as a soil conditioner, helping to neutralize acidic soils and improving the structure and fertility of soils. Lime, another form of calcium carbonate, is essential for promoting healthy plant growth and increasing crop yields.

3. Food and Pharmaceuticals In the food industry, calcium carbonate is used as a dietary supplement to provide calcium, an essential mineral for human health. It is also employed as an antacid to relieve symptoms of indigestion and heartburn. The pharmaceutical sector uses it as an excipient in tablets. The purity and safety of calcium carbonate are critical in these applications, making its CAS number an essential identifier for regulatory compliance and quality control.

4. Environmental Applications Calcium carbonate plays a significant role in water treatment processes, where it is used to remove impurities and adjust acidity levels in water. Furthermore, it is used in the production of carbon dioxide capture technologies, helping to mitigate greenhouse gas emissions.

5. Paper and Plastic The paper industry utilizes calcium carbonate as a filler and coating pigment. It enhances the brightness and opacity of paper products. In plastics, calcium carbonate is added to improve mechanical properties and reduce costs.

Importance of the CAS Number

The CAS number is crucial for identifying distinct chemical substances in various contexts. For professionals in research, manufacturing, and regulatory affairs, the CAS number 471-34-1 serves as a unique identifier for calcium carbonate. It enables clear communication across industries and disciplines, ensures proper regulatory compliance, and fosters better tracking of substances throughout the supply chain. The CAS registry is recognized globally, making it a vital tool for scientists and industry professionals alike.

Conclusion

Calcium carbonate, identified by its CAS number 471-34-1, stands as a cornerstone in multiple industries due to its abundant availability, cost-effectiveness, and diverse applications. From enhancing agricultural productivity to serving critical roles in construction, pharmaceuticals, and environmental management, its significance cannot be understated. With ongoing research and innovation, the utilization of calcium carbonate is expected to expand further, underscoring its enduring importance in modern society.