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Construction Chemistry
Microcalcite
Formula:
CaCO₃
GOST/CAS:
CAS 471-34-1 / ГОСТ 17498-72
Microcalcite (highly dispersed biomimetic mineral filler) is a high-purity, finely ground white powder produced by the mechanical crushing and separation of white marble. The product features exceptional whiteness, chemical stability, and a low level of impurities. Due to its unique rhombohedral particle shape and consistent fractional composition, microcalcite is an indispensable, universal structuring agent and filler across the construction, paint and coatings, chemical, polymer, and drilling industries.
Applications
Paints and Coatings: Utilized as a premium white pigment extender in the production of interior and exterior architectural paints, enamels, primers, and powder coatings. It optimizes titanium dioxide consumption while enhancing opacity, hiding power, and weather resistance.
Dry Construction Mixtures: Formulated into wall putties, plasters, tile grouts, and self-leveling underlayments. It ensures excellent adhesion, paste plasticity, surface smoothness, and effectively prevents shrinkage cracking.
Plastics, Polymers, and Rubber Products: Widely used in the manufacturing of PVC profiles, cable compounds, pipes, linoleum, and technical rubber goods. It increases structural rigidity, heat resistance, and dimensional stability while reducing formulation costs.
Drilling Fluids and Chemicals: Applied in the oil and gas sector as a weighting agent and bridging material for drilling, workover, and completion fluids. It is completely acid-soluble, which prevents permanent formation damage in productive zones.
Key Advantages
High Whiteness and Brightness: A whiteness level of up to 96–99% allows microcalcite to partially replace expensive white pigments, ensuring the pure, vibrant color of the finished product.
Stable Particle Size Distribution: Strict particle size control (ranging from 2 μm to 500 μm) guarantees an ideal dispersion within the material matrix, significantly improving the rheological properties of mixtures.
Chemical Inertness and Durability: Demonstrates high resistance to UV radiation, moisture, and weak acids, which extends the service life of finished products in harsh outdoor or industrial environments.
Eco-Friendly and Radiation Safe: A natural, non-toxic, and environmentally safe mineral. It is classified as a Grade 1 construction material with no restrictions regarding radiological factors.
Storage & Transportation
- Store in dry, covered warehouse facilities protected from moisture, humidity, and atmospheric precipitation in the original tightly sealed packaging.
- Avoid packaging damage and contact with water to prevent caking. The shelf life is unlimited when proper storage conditions are maintained.
- Suitable for transportation via all modes of covered transport (trucks, railcars) in accordance with standard freight regulations. The material is classified as non-hazardous and safe for transport.
Frequently bought together
Technical Specifications
Appearance
Homogeneous, finely dispersed white powder
Calcium Carbonate Content
min. 98.0% – 99.5%
Whiteness
94.0% – 98.5% (depending on the grade/fraction)
Moisture Content
max. 0.2%
Mohs Hardness
3.0
pH (10% aqueous suspension)
8.5 – 9.5
HCl-Insoluble Residue
max. 0.1% – 0.5%
Supply info
- Industrial multi-layer, moisture-resistant paper or polypropylene bags of 25 kg / 50 kg arranged on pallets.
- Flexible Intermediate Bulk Containers (Big-Bags) with internal polyethylene liners weighing 1000 kg / 1500 kg for large-scale industrial operations.