| Customization: | Available |
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| CAS No.: | 471-34-1 |
| Formula: | CaCO3 |
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Calcium carbonate is a remarkable inorganic compound, scientifically denoted by the chemical formula CaCO3. As a dominant constituent of limestone, marble, and more, this versatile compound appears as pristine white crystals, devoid of any odor, essentially insoluble in water, and responds eagerly with acids to liberate carbon dioxide [1]. As one of the planet's most prevalent substances, calcium carbonate graces a variety of geological formations, including aragonite, calcite, chalk, limestone, marble, and travertine. Moreover, it forms a fundamental part of the skeletal structures and shells of certain animals. Revered for its significance as a vital construction material, calcium carbonate's utility extends across myriad industrial domains, making it indispensable in eco-friendly construction materials and products.
Laboratory Uses
1. In the biological extraction of pigments from green leaves experiment, introducing a subtle amount of calcium carbonate during the grinding phase serves a protective function. This remarkable compound ensures the integrity of the pigment, preventing it from undergoing any degradation during the grinding process, thereby preserving its vibrant quality.
2. The fascinating reaction of calcium carbonate with hydrochloric acid, typically dilute, results in the effervescent release of carbon dioxide: CaCO3+2HCl=CaCl2+CO2↑+H2O. This reaction not only demonstrates fundamental chemical principles but also produces calcium chloride solution, which finds its use in the standardization of soap solutions, showcasing the versatility and practical utility of calcium carbonate.
Industrial Uses
1. Utilized in Plastic Production
Calcium carbonate plays a pivotal role in the enhancement of plastic products. It is extensively used to fill resins such as polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP). By incorporating calcium carbonate, manufacturers can significantly improve the material properties, thus broadening the application spectrum of these plastics. This compound aids in minimizing resin shrinkage, optimizes rheological characteristics, and provides effective viscosity control, thereby elevating the quality and performance of plastic products.
2. In the realm of the food industry, calcium carbonate serves as a valued additive, contributing to the quality and functionality of various food products.
3. A Key Component in the Construction Industry
Calcium carbonate is indispensable in the construction sector, serving as a primary material for plastic, rubber, paint, and waterproof material production. Its attributes of high purity, exceptional whiteness, non-toxic nature, and lack of odor, coupled with its excellent oil absorption and low hardness, make it an ideal choice. Additionally, the significance of marble, a form of calcium carbonate, cannot be overlooked in this industry.
4. Integral to the Chemical Manufacturing Industry
With particle sizes ranging from 350 mesh to 400 mesh, calcium carbonate is used in crafting gussets, downpipes, and other chemicals, boasting a remarkable whiteness above 93 degrees. Moving to 400 mesh to 600 mesh, it finds applications in toothpaste and soap formulations with a whiteness exceeding 94 degrees. The 800 mesh variant is widely utilized in rubber, cables, and PVC products, maintaining its superior whiteness above 94 degrees, thus highlighting its versatility across varying industrial applications.
5. Essential in Fine Ceramic Materials
Calcium carbonate is instrumental in the preparation of high-caliber ceramic materials that boast stability at high temperatures, exceptional dielectric properties, low thermal conductivity, and remarkable microporosity, all while ensuring a high degree of purity. This makes it highly desirable for the production of advanced ceramic materials.
6. As a Nutritional Supplement
Calcium carbonate stands as the primary ingredient in the majority of calcium tablets available in the market. It is recommended to be consumed with meals as it contains carbonic acid, which reacts in acidic environments, generating carbon dioxide. It is advised that individuals with low gastric acid secretion or those on gastric acid inhibitors should be cautious, as its effectiveness might be compromised in such cases.
| Molecular weight | 100.0869 |
| density | 2.93 g/mL at 25 °C (lit.) |
| Melting point | 825 °C |
| Boiling Point | 800 °C |
| Water Solubility | Insoluble |
| Solubility | 5 m HCl: 0.1M at 20 °C,Clear, colorless. |
| Refractive Index | 1.6583 |
| PH | 9.91(1 mM solution);9.91(10 mM solution);9.91(100 mM solution); |
| Storage conditions | Store at +5°C to +30°C. |
| Sensitivity | Easily absorbing moisture |
Najin Import and Export (Shandong) Co., Ltd. stands as a robust and multifaceted enterprise. We proudly anchor our operations around key industrial chains including BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, and a variety of polyols such as polyether, polyester, and polymer. Our adept sales team, celebrated for its technical finesse, impeccable management, and collaborative spirit, has garnered acclaim industry-wide. Our products reach a wide array of domestic and international markets, solidifying our role as a trusted global partner.
We are unwavering in our dedication to the tenets of 'quality first, customer first, and reputation first.' Our mission is to furnish customers with unparalleled products, and we are equally committed to forging a premier chemical product supply chain. Through superior service, exceptional products, and relentless dedication, we strive to exceed expectations and solidify our standing in the industry.
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