Product Overview: High-Purity 400 Mesh Heavy Calcium Powder

Our 400 mesh heavy calcium powder (Ground Calcium Carbonate, GCC) is a premium functional filler engineered from high-purity natural calcite deposits. With a calcium carbonate (CaCO₃) content of 90-95% and available in both yellow and white varieties, this finely milled powder (CAS No. 61790-53-2) is specifically designed to enhance formulation performance while significantly reducing raw material costs across paints, coatings, rubber, plastics, adhesives, and construction chemicals.

The precisely controlled 400 mesh particle size (approximately 38 microns) ensures excellent dispersion, a smooth surface finish, and consistent mechanical properties in the final product. By acting as a partial replacement for more expensive binders, resins, and primary pigments, our heavy calcium powder offers a sustainable and cost-effective solution for manufacturers aiming to optimize their production economics without compromising on quality or performance.

Key Applications & Industry Performance Benefits

1. Paints & Coatings – Enhancing Opacity and Weather Resistance

In the paint and coatings industry, the finely controlled particle size of our 400 mesh heavy calcium powder acts as an efficient spacing pigment. This optimizes the light scattering of primary pigments like Titanium Dioxide (TiO₂), leading to markedly improved opacity and hiding power. By enabling a reduction in TiO₂ usage, it offers substantial cost savings without compromising whiteness or coverage.

Furthermore, the powder’s inherent chemical stability and low solubility contribute to the coating’s long-term durability. It enhances resistance to weathering, UV degradation, and abrasion, making it an ideal choice for both interior decorative paints and exterior protective coatings. The fine, uniform particles ensure a smooth, level finish with excellent gloss control and adhesion to various substrates.

2. Rubber Manufacturing – Improving Hardness and Tensile Strength

As a functional filler in rubber compounds, 400 mesh calcium carbonate serves multiple critical roles. It acts as an effective processing aid, improving the green strength of the uncured rubber and facilitating better handling during shaping and molding. Its small particle size ensures excellent dispersion within the rubber matrix, which is vital for achieving consistent physical properties throughout the final product.

The addition of this mineral filler significantly increases the rubber’s hardness, tensile strength, and tear resistance. It provides superior wear resistance, extending the lifespan of products such as tires, industrial belts, hoses, and gaskets. Additionally, it allows manufacturers to reduce overall material costs by partially replacing more expensive synthetic rubbers while maintaining high performance standards.

3. Plastics, Adhesives & Sealants – Versatility Across Industries

Beyond paints and rubber, our 400 mesh heavy calcium powder is widely utilized in the plastics industry for PVC pipes, profiles, cables, and masterbatches. It improves dimensional stability, impact resistance, and thermal conductivity. In adhesives and sealants, it functions as a thixotropic agent and filler, enhancing viscosity control, bond strength, and reducing shrinkage upon curing. Its low oil absorption allows for high loading levels, creating significant cost efficiencies for manufacturers of construction putty, cementitious grouts, and joint compounds by improving crack resistance and workability.

Technical Specifications & Physical Properties

Our advanced manufacturing process employs rigorous milling and classification technology to ensure a tightly controlled particle size distribution and consistent quality batch after batch. The table below details the standard technical parameters for our 400 mesh heavy calcium powder.

In addition to the specifications listed above, typical physical properties include a specific gravity of approximately 2.7 g/cm³, a Mohs hardness of 3, and a pH value ranging from 8 to 9. The product is available in both industrial grade and food grade variants, catering to a broad spectrum of applications from heavy-duty construction materials to sensitive food contact packaging and pharmaceutical excipients.

Packaging, Supply Chain & Global Logistics

We understand the critical importance of reliable supply chains and flexible logistics in your manufacturing operations. Our standard packaging for 400 mesh heavy calcium powder is 25 kg/bag, and we offer a comprehensive range of customizable packaging options to meet your specific handling and storage requirements, including 1-ton jumbo bags, PP woven bags, and vacuum-sealed packaging.

With a low Minimum Order Quantity (MOQ) of just 1 kilogram, we actively support pilot production runs, laboratory-scale trials, and full-scale industrial manufacturing. Our strategically located production facilities in China enable efficient global shipping, ensuring fast, reliable, and cost-effective delivery to customers across North America, Europe, Southeast Asia, and beyond.

Why Choose Our 400 Mesh Calcium Carbonate?

Selecting the right filler is crucial for achieving optimal product performance and cost efficiency. Our 400 mesh heavy calcium powder delivers consistent quality, exceptional versatility, and significant value across diverse industrial applications. We are committed to providing not just raw materials, but complete technical support to help you optimize your formulations and gain a competitive edge.

• Consistent particle size distribution ensures trouble-free processing and reliable end-product quality.
• High brightness and purity levels enhance the aesthetic and functional properties of your formulations.
• Flexible packaging options and a very low MOQ accommodate businesses of all sizes, from startups to multinational corporations.
• Expert technical support and application knowledge to help you maximize performance and reduce costs.

Contact our team today to request a free sample, access a detailed technical data sheet (TDS), or speak directly with our application specialists about your specific requirements. Let us help you achieve superior results with our premium 400 mesh heavy calcium powder.