Paint Grade
Dolomite Powder
98% whiteness, 325 mesh dolomite powder engineered for opacity, smooth dispersion and durable performance in paints, putty, fillers and industrial coatings.
Trusted For
High-Performance Paint Applications
Our paint grade dolomite powder is processed to deliver consistent particle size, low iron content and superior whiteness. Paint manufacturers use it as a functional extender in decorative coatings, wall putty and industrial paints where brightness, opacity and a smooth finish matter.
Unlike plain calcium carbonate, dolomite carries magnesium carbonate along with calcium carbonate. That added hardness improves scrub resistance and weathering performance, which is why many formulators choose dolomite powder for exterior paints, primers and putty over standard carbonate fillers.
Bright & Stable
Ideal for formulations that require good opacity, smooth texture and dependable durability.
Paint Grade Dolomite Powder Specifications
| Parameter | Typical Value |
|---|---|
| Whiteness | Up to 98% |
| Mesh Grade | 325 Mesh (custom mesh from 300 to 800 available) |
| Combined CaCO3 + MgCO3 | 97% and above |
| Moisture Content | Below 0.5% |
| Iron Content (Fe2O3) | Low, non color-interfering |
| Packaging | 25 kg / 50 kg HDPE bags, jumbo bags on request |
Values are typical and may vary by batch. Request a current test certificate for your specific mesh and grade requirement.
Why Choose Our Product
Common Uses
Paints & Coatings
Used as a functional extender to improve spread, opacity and finish quality in both water-based and solvent-based paint systems.
Wall Putty & Fillers
Contributes to smooth texture, good workability and enhanced surface performance before painting.
Primers & Textured Coatings
Coarser mesh grades add body and texture control in masonry and exterior coating systems.
Plastics & Ceramics
Supports stable processing and desirable physical properties in industrial formulations.
Dolomite Powder vs Calcium Carbonate Powder
Both minerals work as white extenders in paint, but they are not interchangeable for every job. Here is how paint formulators typically decide between the two.
Paint Grade Dolomite Powder
- Contains both calcium and magnesium carbonate, giving it more hardness
- Better scrub resistance and weathering performance
- Preferred for exterior paints, putty and primers
- Slightly lower oil absorption in most grades
Calcium Carbonate Powder
- Pure calcium carbonate with no magnesium content
- Generally more cost-effective for high-volume use
- Common in interior emulsions and economy paints
- Softer mineral, less scrub resistance than dolomite
Common Questions
What mesh size is used for paint grade dolomite powder?
Paint grade dolomite powder is generally supplied between 300 and 800 mesh, with 325 mesh being the most common grade for decorative paints, primers and putty. Finer grades above 600 mesh are used for premium emulsion paints where a smoother finish and better dispersion are needed.
What is the difference between dolomite powder and calcium carbonate powder in paint?
Both are used as white extenders, but dolomite carries magnesium carbonate along with calcium carbonate, which makes it a harder mineral. This gives dolomite powder better scrub resistance and weathering performance, so it is often preferred for exterior paints and putty, while plain calcium carbonate is more common in low cost interior emulsions.
Is paint grade dolomite powder suitable for wall putty?
Yes. Dolomite powder is one of the primary fillers used in wall putty manufacturing. Its high whiteness, fine particle size and low oil absorption help putty spread smoothly, fill surface imperfections and bond well before painting.
What whiteness percentage is required for dolomite powder used in paint?
For decorative and industrial paints, dolomite powder is expected to have a whiteness of 90% or above. Vrindavan Minerals supplies paint grade dolomite powder with up to 98% whiteness so it does not interfere with pigment shades, especially in pastel and light color formulations.
What packaging is available for bulk dolomite powder orders?
Paint grade dolomite powder is packed in 25 kg or 50 kg HDPE bags with an inner liner to protect against moisture. Jumbo bags and custom packaging are also available for bulk and export orders based on buyer requirement.
How do I check the quality of paint grade dolomite powder before ordering?
Ask the supplier for a test report covering whiteness index, mesh size or particle size distribution, moisture content and combined CaCO3 plus MgCO3 percentage. Vrindavan Minerals provides batch-wise quality documentation and sample dispatch before bulk orders.
Get A Custom Supply Plan
Share your grade, mesh size and packaging requirements and our team will assist with the right product solution for your application.
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