Micronized Calcium
Carbonate Powder
Ultra-fine ground calcium carbonate filler engineered for smoother dispersion, better opacity and consistent performance across industrial formulations.
What Is Micronized
Calcium Carbonate Powder?
Micronized calcium carbonate powder is an extra-fine, naturally mined mineral powder (CaCO₃) ground down to a particle size typically ranging from 2 to 25 microns. The finer particle size increases surface area, helping the powder disperse more evenly and interact more consistently with resins, binders and pigments, which is why it is specified wherever surface finish, opacity or mechanical performance matter.
Vrindavan Minerals is a micronized calcium carbonate powder manufacturer based in Udaipur, Rajasthan, producing both uncoated and surface-coated grades for formulators across India. For general-purpose and coarser grades, see our Calcium Carbonate Powder range.
Smoother Dispersion
Finer particle size supports more even mixing and consistent finish across paints, plastics and rubber formulations.
Key Specifications & Pricing
Because particle size sits at the centre of what makes micronized calcium carbonate, or micronized CaCO3, different from standard ground carbonate, its properties are usually described alongside how they change the behaviour of the finished formulation. The ranges below show typical specifications and pricing; exact values vary by grade and application, so we share a current technical data sheet with buyers once a specific requirement is confirmed.
Key Specifications & Pricing
Price Range: ₹2,400 to ₹10,000 per metric tonne (or roughly ₹5 to ₹45 per kg depending on grade, whiteness, and whether it is uncoated or stearic-acid coated).
Sourcing: Directly from Vrindavan Minerals, a manufacturer with its own roller mill and micronizing facility in Udaipur, Rajasthan.
Why Fineness Matters
Common Industrial Applications
Micronized calcium carbonate powder is used as a functional filler and extender across a wide set of industries, wherever a formulation benefits from fine, consistent particle size rather than a coarser, standard-grind calcium carbonate filler.
Plastics & Polymers
Acts as a functional filler and extender in PVC pipes, cables, masterbatches, and plastic molding.
In plastics and PVC compounding, micronized calcium carbonate disperses more evenly through the resin, supporting a smoother surface finish and consistent mechanical properties.
Paints & Coatings
Improves gloss, whiteness, and mechanical strength while reducing expensive titanium dioxide (TiO₂) usage in water-based and interior paints.
Fine micronized grades act as an extender in paints and coatings, improving opacity, brushability and finish while reducing dependence on higher-cost pigments.
Paper & Ceramics
Used for opacity, surface smoothness, and as an eco-friendly filler replacing traditional clay.
As a filler and coating pigment, micronized calcium carbonate improves paper brightness, opacity and printability while helping manage overall production cost.
Adhesives & Rubber
Enhances binding quality, flow, and structural properties.
Fine particle size helps micronized calcium carbonate blend smoothly into adhesive and sealant formulations without affecting flow or application properties.
Rubber Compounding
Rubber manufacturers use fine calcium carbonate powder to improve filler dispersion and processing consistency in tyres, seals and moulded rubber products.
Construction Materials
Used in putties, sealants, wall care products and other construction formulations as a calcium carbonate filler that supports workability and finish.
How Micronized Calcium Carbonate Is Processed
Turning calcite stone into a consistent micronized calcium carbonate powder involves more than simple grinding. The process is built to control particle size distribution tightly, since inconsistent milling directly affects how the powder performs once it reaches a formulator's mixing line.
Raw Stone Selection
High-purity calcite and limestone are selected and inspected before processing, since the source rock determines the whiteness and purity of the final powder.
Crushing & Pre-Grinding
Selected stone is crushed and pre-ground into a coarse powder, reducing it to a size that can be fed efficiently into the micronizing mills.
Micronizing & Classification
The powder is repeatedly ground and air-classified to separate out the finest particles, building a tighter, more controlled particle size distribution.
Coating, Testing & Packing
Grades requiring surface treatment are coated with a suitable agent, then every batch is checked before being packed for dispatch.
Benefits of Using Micronized Calcium Carbonate
What This Means For Formulators
A finer, more uniform micronized calcium carbonate powder gives formulators more room to increase filler loading without sacrificing surface finish, mechanical strength or appearance, which is one of the main reasons it is chosen over a coarser, standard-grind calcium carbonate powder in performance-sensitive applications.
The right micron grade also reduces the amount of resin, binder or pigment needed to achieve a given result, which can meaningfully lower formulation cost across large production runs without changing the finished product's specification.
How To Select The Right Grade
Start with your end application. Paints and coatings generally call for the finest micronized grades to maximise opacity and finish, while plastics, PVC and rubber compounding often use a slightly coarser fine grade balanced for dispersion and mechanical performance. Construction fillers and putties can typically use a comparatively coarser calcium carbonate filler without affecting workability.
Next, decide whether you need a coated or uncoated grade. Surface-coated micronized calcium carbonate disperses more easily in certain resin systems and resists moisture pickup, while uncoated grades are usually sufficient for water-based or less demanding formulations. Always confirm current particle size, whiteness and packaging against your own specification sheet before finalising an order.
What To Verify Before Ordering
Ask any micronized calcium carbonate powder supplier for a current test certificate covering particle size distribution, whiteness, CaCO3 purity and moisture content. These figures determine how the powder will disperse, how consistently it will perform during processing, and how it will affect the appearance and quality of your finished product. Checking these specifications against your own technical requirements can also help ensure the selected grade is suitable for your application.
Also confirm batch-to-batch consistency, packaging format, and whether the supplier can support both small trial quantities and recurring bulk orders, so a change in requirement does not mean switching suppliers altogether.
Micronized Calcium Carbonate Powder Manufacturer & Supplier in India
India's mineral processing base for micronized calcium carbonate powder is spread across a few key regions, with Rajasthan among the more established hubs thanks to its calcite and limestone deposits. Buyers sourcing from a micronized calcium carbonate powder manufacturer in this region generally benefit from closer access to raw material, established roller mill and micronizing infrastructure, and manufacturers who are used to serving paint, plastics, rubber and paper customers at scale.
Vrindavan Minerals operates its mineral processing facility in Udaipur, Rajasthan, where roller mills and micronizing lines are used to grind and, where required, surface-coat calcite, calcium carbonate, dolomite, talc and related minerals. As a micronized calcium carbonate powder manufacturer working directly from raw stone rather than trading finished material, we are able to offer both standard grades and custom requirements to buyers across India.
Why Choose Vrindavan Minerals
Vrindavan Minerals mills and micronizes a range of industrial minerals, including calcite, calcium carbonate, dolomite, talc, pyrophyllite and china clay, at our own facility in Udaipur. Working directly with raw stone rather than reselling finished powder allows us to keep closer control over particle size, whiteness and batch consistency for every dispatch.
As a micronized calcium carbonate powder manufacturer and supplier, we work with formulators across paints, plastics, rubber, paper and construction, supporting both small trial orders and recurring bulk requirements with responsive technical support.
In-House Processing
From raw stone to finished micron grade, handled entirely at our own Udaipur facility.
Frequently Asked Questions
Micronized calcium carbonate powder is used as a functional filler and extender in paints and coatings, plastics and PVC, rubber compounding, paper manufacturing, construction materials, and adhesives and sealants, wherever a fine, consistent particle size improves dispersion, finish or cost efficiency.
Standard calcium carbonate powder is ground to a general-purpose particle size, while micronized calcium carbonate is processed through additional milling and air classification to achieve a much finer, more tightly controlled particle size, giving it better dispersion and finish in performance-sensitive applications.
Particle size for micronized calcium carbonate is grade-dependent and is selected based on the end application, with finer grades generally used in paints and coatings and comparatively coarser fine grades used in plastics, rubber or construction fillers. Request our current technical data sheet for exact particle size figures on a specific grade.
Yes. Micronized calcium carbonate is widely used as a filler in PVC and other plastics, where its fine particle size supports smoother dispersion through the resin, a better surface finish, and more consistent mechanical properties compared to coarser calcium carbonate filler.
Micronized calcium carbonate is commonly used as an extender in paints and coatings, where its fine particle size helps improve opacity, brushability and surface finish while allowing formulators to manage the overall cost of pigments and resins.
Ask for a current test certificate covering particle size distribution, whiteness and CaCO3 purity, confirm whether coated or uncoated grades are available, and check that the supplier can maintain batch-to-batch consistency and support both trial and bulk order volumes.
Yes. Coated micronized calcium carbonate has a surface treatment applied to improve dispersion in certain resin systems and reduce moisture pickup, while uncoated grades are typically sufficient for water-based formulations or applications with less demanding processing requirements.
We supply micronized calcium carbonate powder in 25 kg and 50 kg bags as well as 1-ton jumbo bags, with custom packaging available for bulk industrial orders and export shipments based on buyer requirement.
Secure Packaging & Logistics
We offer our micronized calcium carbonate powder in a variety of packaging options to suit your needs, including 25 kg bags, 50 kg bags, and 1-ton jumbo bags.
Request Custom Packaging →
Request a
Custom Quote
Share your target application, particle size range and volume requirement, and our team will help match you to the right micronized calcium carbonate grade.