Dolomite powder is a functional filler widely used in paint, putty, detergent, and rubber compounding for its high whiteness, stable chemistry, and competitive cost relative to premium white fillers. Radhe Enterprise supplies industrial-grade dolomite powder from our Bhavnagar, Gujarat facility, formulated to meet the oil absorption, particle consistency, and brightness requirements that coatings formulators, building material manufacturers, and detergent producers depend on.
Our standard filler grade delivers 90%+ whiteness, Fe2O3 below 0.1%, SiO2 below 3%, and a controlled 200–300 mesh distribution that supports consistent rheology in liquid systems and predictable packing in powder blends. Each lot is tested and documented so formulation teams can integrate the powder without trial-batch adjustments. For white-paint systems, premium putty, and light-coloured detergents, we also offer upgraded whiteness grades on specification.
For production managers and procurement specialists across paint plants, wall putty manufacturing units, detergent blending facilities, and rubber goods factories, our factory-direct model delivers documented quality, flexible packing, and competitive pricing with short lead times from Gujarat.
Technical Specifications
Factory-Direct Pricing
15–30% lower than marketplace rates. No middlemen.
Filler Performance Parameters for Coatings and Compounds
The value of a mineral filler in paint and putty is determined by several interacting parameters: particle size distribution controls rheology and settling behaviour; whiteness and iron content influence the colour of the finished product; oil absorption affects the formulation's PVC (pigment volume concentration) and the amount of binder required; and moisture content impacts storage stability and microbial growth risk. Dolomite powder performs well across all these parameters at a cost point that makes it attractive for volume applications where premium fillers like calcined kaolin or precipitated calcium carbonate would over-specify the formulation.
For rubber compounding, the key parameters are particle size (affecting dispersion and surface finish), moisture (affecting cure characteristics), and chemical inertness (ensuring no interference with the vulcanisation chemistry). Dolomite powder satisfies these requirements as a non-reinforcing filler, allowing compounders to reduce raw material cost in products where mechanical strength is provided by carbon black or silica reinforcement.
Formulation-Specific Applications
Emulsion paints and primers: Dolomite powder contributes whiteness, opacity, and dry hide in interior emulsion paints, distempers, and water-based primers. The controlled 200–300 mesh distribution supports stable viscosity and prevents settling during storage. Typical loading rates range from 10–25% of the total formulation depending on the paint grade and desired PVC.
Wall putty and surface fillers: Dolomite is a primary filler in cement-based and acrylic-based wall putty compounds. It provides the bulk volume and contributes to the smoothness of the finished surface. Low moisture content (under 1%) prevents premature hydration reactions in cementitious putty formulations.
Powdered detergents: In detergent formulations, dolomite powder functions as a bulking agent and builder, contributing to the total solids while maintaining flow properties. Mesh consistency ensures uniform blending with surfactants, builders, and other additives in the production line.
Rubber goods and composites: As a non-reinforcing filler, dolomite powder is used in rubber mats, hoses, conveyor belts, and moulded goods where cost optimisation is the primary objective. It disperses uniformly in the rubber matrix and does not adversely affect cure time or compression set within normal loading ranges.
Quality Control for Filler Applications
Our filler-grade dolomite powder undergoes testing for: whiteness (ISO brightness at 457 nm), CaO and MgO content, SiO2 and Fe2O3 by wet chemical analysis, moisture by loss-on-drying at 105°C, sieve analysis on mechanical shaker for mesh distribution, and oil absorption by the linseed oil method for paint-grade material. Per-lot certificates of analysis are issued with every consignment, and retained samples are held for three months for post-dispatch reference. For paint and coatings formulators, we also provide data on specific gravity and pH of water slurry on request.
Packaging, Logistics and Export for Filler Buyers
Standard packing options include 25 kg and 50 kg laminated PP bags with moisture-protection liners, and 1 MT jumbo bags for bulk handling. Export shipments are containerized from Gujarat ports (Mundra, Kandla, Pipavav) with palletization and shrink-wrap. Standard export terms are FOB; CIF and CFR are available on request. Documentation includes commercial invoice, packing list, Chamber-attested Certificate of Origin, and per-lot certificate of analysis. Our team coordinates directly with buyer logistics to align dispatch timing with production schedules and vessel availability.
Why Formulators and Manufacturers Choose Radhe Enterprise
Direct manufacturing from Bhavnagar eliminates intermediary margins and gives us the flexibility to adjust mesh size, whiteness range, and packing format to match specific formulation requirements. We work with paint formulators, putty manufacturers, and detergent producers on grade selection, sample evaluation, and specification alignment. Our production capacity supports both spot orders and scheduled monthly volumes for repeat buyers, with consistent quality documentation that satisfies ISO-compliant incoming inspection protocols.
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View full categoryFrequently Asked Questions
Is dolomite powder suitable for white emulsion paint formulations?
Yes, dolomite powder is widely used as a functional filler in white emulsion paints, distempers, and primers. Our 90%+ whiteness supports white-base systems, and the controlled 200–300 mesh distribution contributes stable rheology and settling resistance. In premium white paints, dolomite is often combined with titanium dioxide and other white pigments to achieve the required opacity and brightness at optimal formulation cost. We recommend a small-scale formulation trial to confirm the performance in your specific binder system.
Can dolomite powder replace calcium carbonate as a filler in putty and paint?
In many applications, dolomite powder can partially or fully replace calcium carbonate (CaCO3) as a filler, depending on the performance targets. Dolomite (CaMg(CO3)2) contains magnesium carbonate in addition to calcium carbonate, which can influence oil absorption, pH buffering, and reactivity differently than pure calcium carbonate. For wall putty, cement-based formulations, and general-purpose emulsion paints, the substitution is typically straightforward. For sensitive formulations where the MgO content could affect cure chemistry or colour, we recommend a bench-scale trial before full-scale substitution.
Do you supply dolomite powder for export to detergent manufacturers?
Yes, we supply dolomite powder to detergent manufacturers in Africa, the Middle East, and South Asia. Our detergent-grade powder is produced with controlled mesh distribution (typically 200–300 mesh) and low moisture to ensure uniform blending with surfactant and builder systems. Packing is in 25 kg or 50 kg moisture-barrier bags for containerized export. The certificate of analysis confirms whiteness, mesh, moisture, and chemistry for each shipment.
What is the lead time for bulk paint-grade dolomite powder orders and how do you ensure consistency?
For standard 200–300 mesh dolomite powder, dispatch begins within 24–72 hours of order confirmation for domestic buyers. Export orders are typically ready within 7–10 days depending on documentation and container availability. Consistency is ensured through our quality protocol: we maintain separate production runs for filler-grade material, test each lot before release, and issue a certificate of analysis with every consignment. Retained samples are held for three months. Custom mesh or upgraded whiteness grades may require 3–5 additional days for production configuration.
What is the oil absorption value of your dolomite powder for paint formulation?
The oil absorption of our standard 200–300 mesh dolomite powder typically ranges from 18–25 g oil per 100 g of powder, measured by the linseed oil rub-out method. This moderate oil absorption makes dolomite suitable as a functional filler in emulsion paints, distempers, and primers where high oil absorption would increase binder demand and raise formulation cost. The oil absorption value is a function of particle size, particle shape, and surface characteristics — our air-classified powder provides consistent values that formulation chemists can rely on for pigment volume concentration calculations.
How does dolomite powder perform as a filler in rubber compounding applications?
Dolomite powder functions as a non-reinforcing filler in rubber compounding, primarily serving to reduce raw material cost and improve processing characteristics. It disperses readily in rubber compounds due to its moderate particle size and low moisture content, and does not interfere with the sulphur vulcanization chemistry. Typical loading rates range from 20–100 phr (parts per hundred rubber) depending on the targeted hardness and cost reduction. Dolomite is commonly used in rubber mats, conveyor belts, hose covers, and moulded goods where mechanical reinforcement is provided by carbon black or silica. For applications requiring high abrasion resistance or tensile strength, dolomite is used in combination with reinforcing fillers.