| Customization: | Available |
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| CAS No.: | 471-34-1 |
| Formula: | CaCO3 |
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Calcium carbonate is an inorganic compound with the chemical formula CaCO3. It is the quintessential component in the composition of limestone and marble, among others. Typically presented as pristine white crystals, it is odorless, predominantly water-insoluble, and is known for its reactivity with acids, leading to the effervescent release of carbon dioxide [1]. This compound is one of Earth's most ubiquitous substances, naturally occurring in the form of aragonite, calcite, chalk, limestone, marble, and travertine. Furthermore, it constitutes a significant part of the skeletal structures and shells of various animal species. In addition to its critical role as a building material, calcium carbonate boasts an extensive array of industrial applications, making it indispensable in numerous sectors.
Laboratory Uses
1. In the fascinating realm of biological experiments, the 'extraction of pigments from green leaves' is a crucial procedure. By sprinkling a dash of calcium carbonate during the grinding stage, you can expertly shield the precious pigments from potential destruction, thereby preserving their vibrant quality and essential characteristics.
2. Witness the dynamic reaction of calcium carbonate with hydrochloric acid, commonly dilute, to unleash a cascade of carbon dioxide: CaCO3 + 2HCl = CaCl2 + CO2↑ + H2O. The resulting calcium chloride solution becomes a vital tool for the standardization of soap solutions, showcasing its practical utility in laboratory settings.
Industrial Uses
1. Plastic Production
Calcium carbonate stands as a cornerstone in the world of plastic manufacturing, prominently featured in the production of resins like polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP). This versatile compound significantly enhances the properties of plastic products, broadening their application spectrum. In the realm of plastic processing, calcium carbonate plays a pivotal role in minimizing resin shrinkage, enhancing rheology, and meticulously controlling viscosity.
2. In the food industry, calcium carbonate emerges as a trusted additive, enriching a variety of food products with its unique properties and broad usability.
3. Construction Industry
Within the construction sector, calcium carbonate serves as an indispensable resource for producing raw materials, as well as for crafting interior and exterior wall paints. Its applications span across plastic, rubber, paint, and waterproof material factories. Renowned for its high purity and exceptional whiteness, calcium carbonate is non-toxic, odorless, and boasts low oil absorption and hardness. Its association with marble further highlights its significance in construction materials.
4. Chemical Manufacturing Industry
The versatility of calcium carbonate is evident in the chemical manufacturing industry. With mesh sizes ranging from 350 to 400, it is instrumental in crafting gussets, downpipes, and various chemicals, boasting impressive whiteness levels above 93 degrees. As we progress to 400 to 600 mesh, it finds applications in toothpaste and soap production, maintaining a remarkable whiteness above 94 degrees. Meanwhile, the 800 mesh variant is ideal for rubber, cables, and PVC, ensuring a consistent whiteness exceeding 94 degrees.
5. Fine Ceramic Materials
In the domain of fine ceramics, calcium carbonate is utilized to craft materials that remain stable at high temperatures. It contributes to the creation of dielectric, low thermal conductivity, microporous, and highly pure ceramic materials, underscoring its versatility and essential role in ceramic manufacturing.
6. Nutritional Supplement
Calcium carbonate forms the foundational ingredient in most calcium tablets available on the market. It is recommended for consumption with meals to maximize its benefits. This compound contains carbonic acid, which can readily release carbon dioxide in acidic environments. However, individuals with diminished gastric acid secretion or those taking gastric acid inhibitors should exercise caution when considering calcium carbonate as a supplement.
| 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. emerges as a multifaceted industry leader, offering a wide array of industrial products like BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, and various polyols including polyether, polyester, and polymer polyols. Our professional sales team is celebrated for their mastery in technical expertise, stellar administrative management, and outstanding teamwork. Recognized and lauded across the industry, our products are distributed to numerous esteemed domestic and international enterprises.
With an unwavering commitment to excellence, we uphold our core principles of 'quality first, customer first, and reputation first'. Dedicated to delivering unmatched quality, we strive to offer our clients superior products coupled with exceptional service, tirelessly working to construct a premier chemical product supply chain.
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