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Calcium carbonate
Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls. Materials containing much calcium carbonate or resembling it are described as calcareous. Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues.
Calcium Carbonate (CaCO₃) is a widely used inorganic compound, found naturally as minerals like limestone, marble, chalk, and calcite. It is a white, odorless powder or crystalline substance and is commonly used in a variety of industries due to its versatility, availability, and low cost. Calcium carbonate is both a common filler material and an essential ingredient in many products.
Chemway is one of the Calcium carbonate, manufacturers, exporters, and suppliers in Fujairah, Sharjah, Abu Dhabi, Ajman, Ras Al Khaimah, Kuwait, Muscat, Dubai UAE.
- Construction Industry:
- Cement Production: Calcium carbonate is a key ingredient in cement and concrete. It acts as a source of lime (CaO) when heated and is used in producing building materials such as concrete blocks, precast structures, and architectural components.
- Building Materials: It is used in products like drywall (gypsum boards), tiles, sealants, adhesives, and joint compounds due to its strength, durability, and cost-effectiveness.
- Lime Production: Heating calcium carbonate results in lime (CaO), which is used in construction for making plaster, mortar, and in various other processes for stabilizing soils in road construction.
- Plastics and Polymers:
- Filler and Reinforcement: Calcium carbonate is used as a cost-effective filler material in plastic products such as polyvinyl chloride (PVC), polyethylene, and polypropylene. It improves mechanical properties like stiffness and durability while reducing production costs.
- Impact Modification: In certain plastic formulations, calcium carbonate enhances impact resistance, making the final product more durable.
- Polymer Processing: It helps improve the processing and extrusion properties of plastics, making it easier to mold and shape products like plastic films, sheets, and packaging.
- Paper Industry:
- Paper Coating and Filling: Calcium carbonate is used as a coating pigment and filler in the paper industry. It improves the brightness, smoothness, and opacity of paper, making it ideal for high-quality printing paper, newsprint, and packaging materials.
- Sustainability: Calcium carbonate can reduce the need for wood pulp in paper production, making the process more sustainable. It also helps in enhancing recyclability.
- Paints and Coatings:
- Extender Pigment: In paints and coatings, calcium carbonate is used as a white pigment and extender, reducing the cost of formulations while improving opacity and color brightness.
- Durability: It improves the wear resistance, weather resistance, and flow properties of paints, making them suitable for indoor and outdoor applications.
- Rheological Modifier: It also acts as a rheological modifier, ensuring consistent flow and application of paint products.
- Agriculture:
- Soil Amendment (Lime): Calcium carbonate is commonly used as agricultural lime to neutralize acidic soils and improve crop yields. It raises the soil pH, making nutrients more accessible to plants and improving soil structure.
- Animal Feed Supplement: It is used as a calcium supplement in animal feed to promote strong bones, teeth, and overall health in livestock.
- Fertilizer Production: Calcium carbonate is also a key ingredient in certain fertilizers, helping plants absorb more nutrients.
- Pharmaceutical and Food Industry:
- Calcium Supplement: As a dietary supplement, calcium carbonate provides a bioavailable form of calcium to support bone health, especially in individuals with calcium deficiency.
- Antacid: Used in over-the-counter antacid tablets and liquids to neutralize stomach acid and relieve symptoms of indigestion and heartburn.
- Food Additive: It is used as a firming agent, acidity regulator, and calcium fortifier in food products such as baking powders, beverages, and processed foods.
- Water Treatment:
- pH Adjustment: Calcium carbonate is used to neutralize acidic water in municipal and industrial water treatment processes, ensuring that water meets required pH levels.
- Hardness Control: It can be used to adjust the hardness of water in both residential and industrial systems.
- Filtration Media: In some cases, calcium carbonate is used as a filtration medium to remove impurities from water.
- Rubber Industry:
- Reinforcing Filler: In rubber manufacturing, calcium carbonate is added to improve the strength, durability, and wear resistance of rubber products like tires, hoses, belts, and footwear.
- Cost Reduction: It serves as a low-cost filler that helps reduce production expenses without compromising the quality of the rubber.
- Glass and Ceramics Industry:
- Glass Manufacturing: Calcium carbonate provides calcium oxide (CaO) in glass production, which enhances the durability, strength, and workability of glass products.
- Ceramics: It is used as a flux in ceramic glazes and clay bodies, reducing the melting temperature of the raw materials and improving the final product’s hardness and translucency.
- Environmental Applications:
- Flue Gas Desulfurization: In coal-fired power plants and industrial facilities, calcium carbonate is used to capture sulfur dioxide (SO₂) from emissions. This helps reduce air pollution by converting SO₂ into calcium sulfate (gypsum), which can be recycled into construction materials.
- Wastewater Treatment: Calcium carbonate is used to neutralize acidic wastewater and remove heavy metals from industrial effluents before discharge.
- Oil and Gas Industry:
- Drilling Fluids: Calcium carbonate is used as a bridging agent in drilling fluids to prevent the loss of fluids during the drilling process. It helps maintain wellbore stability and reduces drilling costs.
- Cementing Operations: In oil well cementing, calcium carbonate is added to the cement slurry to improve compressive strength and reduce shrinkage.
- Cosmetics and Personal Care:
- Abrasive: In toothpaste and other personal care products, calcium carbonate acts as a mild abrasive to help remove plaque and polish teeth.
- Thickening Agent: It is also used as a thickening agent in creams and lotions to provide texture and stability.
- Textiles:
- Finishing Agent: Calcium carbonate is used in textile manufacturing for various finishing processes, including as a coating material to improve the appearance and durability of fabrics.
- Adhesives and Sealants:
- Filler: It is used as a filler in adhesives and sealants to improve their workability, consistency, and resistance to sagging or shrinking.
- Mining:
- Neutralizing Agent: Calcium carbonate is used to neutralize acidic mining waste and reduce the environmental impact of mining operations.
Appearance | Fine white powder or colorless crystals |
Odor |
|
pH | insoluble in water |
Molecular Weight | 100.09 g/mol |
Boiling Point | NA |
Melting Point |
|
Vapor Pressure | NA |
Density | 2.711 g/cm3 |
Flash Point | non-flammable |
Available Packing
25KGS
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