| 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 main component of limestone, marble, and more. This exceptional compound presents itself as usually white crystals, odorless, and is mostly insoluble in water. However, it showcases its reactive nature by easily engaging with acids to liberate carbon dioxide. Revered as one of Earth's most abundant substances, calcium carbonate graces the composition of rocks such as aragonite, calcite, chalk, limestone, marble, and travertine. Adding to its versatility, it forms the core structure in the bones and shells of various animals. Beyond its natural beauty, calcium carbonate stands as an essential building material and serves a multitude of industrial applications, underlining its indispensable role in both nature and industry.
Laboratory Uses
1. In the captivating biological experiment of extracting pigments from vibrant green leaves, a sprinkle of calcium carbonate during the grinding process acts as a guardian, preventing the vibrant pigments from being damaged, thus preserving the natural allure of the leaves.
2. Witness the fascinating reaction of calcium carbonate with dilute hydrochloric acid, yielding carbon dioxide: CaCO3 + 2HCl = CaCl2 + CO2↑ + H2O. This reaction not only demonstrates basic chemical principles but also creates a calcium chloride solution ideal for standardizing soap solutions.
Industrial Uses
1. Utilized in the dynamic field of plastic production
Calcium carbonate is extensively employed as a filler in resins like polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP). Enriching plastics with calcium carbonate enhances their properties, broadening their usability. It plays a crucial role in minimizing resin shrinkage, refining processing by improving rheology, and effectively managing viscosity.
2. In the food industry, it finds its purpose as a versatile additive, enhancing various food products.
3. Essential in the construction industry
Calcium carbonate is an indispensable material for plastic, rubber, paint, and waterproof factories. It is revered for its high purity, unmatched whiteness, and non-toxic nature. Its subtle characteristics, such as low oil absorption and modest hardness, make it a preferred choice. Furthermore, marble, a derivative, holds significant value in construction.
4. Vital in the chemical manufacturing industry
From creating gussets and downpipes to manufacturing chemicals, calcium carbonate in 350 to 400 mesh provides excellent whiteness, often exceeding 93 degrees. As the fineness increases to 400-600 mesh, it becomes suitable for toothpaste and soap, achieving over 94 degrees of whiteness. At 800 mesh, it finds its role in rubber, cables, and PVC, maintaining superior whiteness.
5. Fabrication of exquisite fine ceramic materials
Calcium carbonate is a fundamental ingredient in producing ceramic materials that are stable at high temperatures, possess excellent dielectric properties, low thermal conductivity, and are highly pure and microporous.
6. As a nutritional powerhouse
Calcium carbonate is the cornerstone of most calcium tablets available on the market. It is most effective when taken with meals due to its carbonic acid content, which readily generates carbon dioxide in acidic conditions. It is not recommended for individuals with low gastric acid secretion or those on gastric acid inhibitors.
| 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 multifaceted and versatile corporation, expertly orchestrating a diverse array of industrial chains including BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, along with polyether polyols, polyester polyols, and polymer polyols. Our esteemed professional sales team has garnered widespread acclaim and appreciation throughout the industry, thanks to their exceptional technical prowess, robust administrative oversight, and exemplary collaboration. Our products have reached the corners of both domestic and international markets, serving numerous enterprises with distinction.
Our unwavering commitment to excellence is encapsulated in our steadfast principle of "quality first, customer first, and reputation first." We are devoted to offering our clients unparalleled products while continuously striving to establish a superior chemical product supply chain. Our dedication to providing top-notch service and the finest products is relentless, driven by our determination to exert maximum effort in all endeavors.
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