Calcium Carbonate Powder
Micronized calcium carbonate in tailored mesh sizes. A dependable filler for plastics, paints, paper and constructio
400–3000mesh
Particle size
Industrial grades, by mesh
400–3000mesh
Particle size
Industrial grades, by mesh
400–3000mesh
Particle size
Industrial grades, by mesh
400–3000mesh
Particle size
Industrial grades, by mesh
What is Calcium Carbonate Powder?
One of the most useful mineral fillers, ground from calcite, aragonite and marble.
Calcium carbonate (CaCO3) is one of the most abundant mineral compounds in the Earth’s crust. It occurs in limestone and marble, formed over millions of years.
The powder is made by extracting and grinding rocks such as calcite, aragonite and marble into a white, odorless, neutral powder in a range of particle sizes.
Lumps from the mine are crushed and milled, then ground to different sizes. Coarser grades serve construction. Micronized, high-mesh grades serve precise industrial uses.
Same chemistry, different quality
Natural sources are chemically the same, but differ in purity, whiteness and uniformity. That is why the grade you pick matters.
Formula
CaCO3
Origin
Limestone, calcite, marble
Form
White, odorless, neutral powder
Grades
Uncoated, coated, food
Key Characteristics
Six properties make calcium carbonate a reliable filler across industries.
Tailored particle size
Micronized and high-mesh grades matched to your process.
High whiteness
Brightness suited to paint, paper and PVC.
Controlled oil absorption
Better compatibility with polymers.
Low moisture content
Avoids interference with your production process.
Stable, low solubility
Holds steady across different environmental conditions.
Neutralizes acids
Mild alkalinity for pH adjustment and antacid uses.
Why Calcium Carbonate Powder?
A versatile filler that lowers production cost while improving quality, across many industries.
Typical figures
Figures taken from product information. See specifications below.
Lower production cost
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Matched to your process
Choose coarse grades for construction or higher-mesh grades for plastics, paint and other precise uses.
Better product performance
Adds hardness and stability to PE, PP and PVC, coverage and gloss to paint, and strength to mortars.
Local, dependable supply
Produced in Isfahan from regional mineral resources, at a competitive price.
Applications of Calcium Carbonate Powder
Where it is used, and the job it does in each industry.
Plastics and rubber
Reduces resin consumption and raises hardness in polyethylene, polypropylene and PVC.
Paints and coatings
Can make up to 30% of paint weight. Improves coverage, gloss and abrasion resistance.
Paper
Filler and coating that improves whiteness, smoothness and light diffusion.
Construction and cement
Raw material for cement, mortars and blocks. Adds strength and adhesion.
Animal feed
Feed-grade calcium source for bone growth and egg production.
Pharmaceuticals and cosmetics
Calcium tablets, toothpaste, creams and face powders.
Water treatment
Adjusts pH, reduces hardness and forms a protective layer against pipe corrosion.
Adhesives and sealants
Low-cost filler that adds body and consistency.
Calcium carbonate in paints and coatings
In paint, calcium carbonate is a filler and extender. It can make up to 30% of the weight.
Why it is used
It brings brightness and uniformity to the film while replacing part of costlier ingredients.
What makes it suitable
It improves coverage, gloss and abrasion resistance, and can partially replace titanium dioxide.
Function it performs
Extender that fills the film, lowering the cost of each liter of paint.
Who uses it
Manufacturers of construction and industrial paints, adhesives and sealants.
Technical Specifications
Typical properties of calcium carbonate powder. Dashed fields are confirmed on the data sheet.
Need detailed technical information?
Composition and identity
Chemical composition
CaCO3
Also called limestone, calcite, marble, chalk
Purity
Food grade
above 99%Industrial purity varies by grade. Confirm on the analysis.
Appearance
White to grayish
Crystal forms
Calcite, aragonite, vaterite
Molecular weight
100.09 g/mol
Physical properties
Particle size
400–3000 mesh
Industrial grades
Density
Approximately 2.71 gcm³
Calcite
Melting point
1340 °C
Under high pressure
Solubility in water
Slightly soluble
0.0013 g/100 mL at 25 °C
pH
Neutral
Chemical behavior
Reacts with acids
Produces carbon dioxide and water
Performance and quality
Whiteness
High whiteness
Value on data sheet
Moisture
Low moisture content
Value on data sheet
Oil absorption
Controlled
Value on data sheet
Loss on ignition
Value on data sheet
Decomposes to CaO and CO2 on heating
Packaging and handling
Packaging
Moisture-resistant industrial bags
Standard, durable packaging
Surface treatment
Uncoated or stearic-acid coated
Safety
Avoid inhaling dust
Fine particles may irritate the respiratory system.
Grades and Types
Pick by surface treatment and purity. All are ground from calcium carbonate rock.
Industrial, uncoated
400–3000 mesh
Main properties
Micronized, white, neutral ground calcium carbonate in a range of mesh sizes.
Recommended for
Plastics, rubber, paint, paper, construction, cement and adhesives.
Key difference
The standard, cost-effective filler grade.
Coated
Stearic-acid treated
Main properties
Micronized, white, neutral ground calcium carbonate in a range of mesh sizes.
Recommended for
Plastics, rubber, paint, paper, construction, cement and adhesives.
Key difference
The standard, cost-effective filler grade.
Food grade
Purity above 99%
Main properties
Micronized, white, neutral ground calcium carbonate in a range of mesh sizes.
Recommended for
Plastics, rubber, paint, paper, construction, cement and adhesives.
Key difference
The standard, cost-effective filler grade.
Quality You Can Rely On
Calcium carbonate quality shows up as consistency: the same size, whiteness and moisture from one delivery to the next.
Raw material
Mineral sourced domestically and selected for quality.
Micronizing
Ground to a precise, uniform particle size.
Analysis
Checked against your requirements.
Packing and supply
Packed and delivered to your site.
Raw material selection
Limestone and marble from regional mineral resources, selected for quality.
Production consistency
Modern equipment and technical knowledge give precise, uniform particle size.
Quality control
Analysis compared against your requirements before you commit.
Laboratory testing
Request a laboratory analysis and a sample before you order.
Packaging
Standard, durable, moisture-resistant industrial bags.
Supply reliability
Reliable supply with consistent production and order fulfillment.
Packaging and Delivery
Packing, quantities, storage and shipping at a glance.
Packaging options
Standard, durable, moisture-resistant industrial bags.
Available quantities
To be confirmed with sales
Storage and handling
Moisture-resistant bags protect the powder in storage. Avoid inhaling fine dust.
Shipping and export
Delivery across the country. To be confirmed with sales
Frequently Asked Questions
Can’t find your answer? Contact our team and we will help you choose the right grade.
What is calcium carbonate powder used for?
It is a filler and functional additive in plastics and rubber, paints, paper, construction and cement, animal feed, pharmaceuticals and cosmetics, water treatment, and adhesives and sealants.
Which industries use calcium carbonate?
Plastics (polyethylene, polypropylene, PVC), paint, paper, construction, animal feed, pharmaceuticals and cosmetics, and water treatment.
What particle sizes are available?
Industrial grades range from 400 to 3000 mesh. Coarser grades suit construction, and finer, higher-mesh grades suit plastics, paint and other precise uses.
What is the purity of the product?
Food-grade calcium carbonate is above 99% pure. Industrial purity depends on the raw material and processing, so request a laboratory analysis for your grade.
What is the difference between coated and uncoated?
Coated powder is treated with stearic acid, which makes the particles water-repellent and helps them work in polymers and plastics. Uncoated powder is the standard filler grade.
Is it safe to handle?
Calcium carbonate is generally low-risk, but inhaling fine particles may irritate the respiratory system. Follow standard dust-handling precautions.
What packaging options are available?
Standard, durable, moisture-resistant industrial bags. Contact us if you need a specific bag size.
Can I request a technical data sheet or a sample?
Yes. We recommend requesting a laboratory analysis and a sample before ordering. Use the form below and choose Sample or Technical Data Sheet.
How can I request a quotation?
Price depends on particle size, purity, application and order volume. Send us the grade, mesh size and monthly quantity through the form, or contact our sales team.
Can you supply calcium carbonate for export?
Send us your destination and quantity, and our team will confirm the terms.
Looking for a Reliable Calcium Carbonate Powder Supplier?
Tell us the grade, mesh size and monthly quantity. Price depends on mesh, purity, application and order volume, so our sales team quotes for your exact needs.
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