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Posted by Admin on May, 12, 2026
Quartz Powder & Ground Silica
for Paint & Filler Industries
India's Best High-Purity Manufacturer, Supplier & Bulk Exporter of SiO₂ Powder — 99%+ Purity, Fe₂O₃ <0.05%, 30+ Mesh Grades. Trusted Across 50+ Countries.
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What is Quartz Powder? The World's Most Used Industrial Mineral Filler
Quartz Powder — commercially known as Ground Silica, Silica Powder, Silica Flour, Silica Flour Filler, Microsilica Filler, or SiO₂ Powder — is one of the most critical industrial minerals on earth. With a chemical composition of pure Silicon Dioxide (SiO₂) and purity levels exceeding 99%, high-quality quartz powder is a transformative performance ingredient used in hundreds of industrial formulations globally.
As the second most abundant mineral in Earth's crust, quartz — when carefully mined, beneficiated, magnetically separated, and precision-ground from high-purity vein quartz or quartzite deposits — becomes an irreplaceable functional filler, extender, reinforcing agent, and rheology modifier in paints, coatings, rubber compounds, plastics, adhesives, sealants, construction chemicals, and specialty industrial formulations.
Quartz Powder (Ground Silica) is the single most widely used functional filler in the global paint and coatings industry. Over 60% of all architectural paints, industrial coatings, and powder coatings worldwide use silica powder as a primary extender pigment. The global industrial silica market was valued at over USD 9.8 billion in 2023 and is projected to reach USD 15+ billion by 2030, growing at a CAGR of approximately 6.2%.
Aalok Overseas India is a vertically integrated manufacturer operating mining leases, beneficiation plants, magnetic separation units, and precision grinding facilities in the quartz-rich mineral belts of Rajasthan, India — widely considered the world's finest source of high-purity quartz. We supply a comprehensive portfolio spanning coarse 30-mesh surface texture grades to ultra-fine 1250-mesh technical composite powders, each engineered with exact chemical and granulometric specifications for its end application.
🏆 Why Quartz Powder from Rajasthan, India is the World Standard
The Aravalli Mountain Range in Rajasthan harbours one of Asia's most extensive high-purity quartz mineral belts. These ancient Precambrian metamorphic terrains have produced exceptionally pure, crystalline quartzite and vein quartz with naturally high SiO₂ content (98.5–99.8%), extremely low iron oxide (<0.05–0.10%), consistent crystalline structure, natural white to off-white colour, and stable large-scale mineable reserves — making Indian quartz the preferred source for paint, coating, ceramic, and specialty chemical manufacturers worldwide.
Industries That Use Quartz Powder — Global Market Overview
Quartz Powder (Ground Silica / Silica Flour) is used across a remarkably wide range of industries. Below are the primary sectors served by Aalok Overseas India, along with their multilingual industry names for our international buyers.
🎨 Paint & Coatings Industry
- Architectural Emulsion Paints
- Exterior Wall Coatings
- Industrial Epoxy Coatings
- Powder Coatings
- Texture Paints & Renders
- Road Marking Paints
- Anti-corrosion Coatings
- Intumescent Fire-retardant Coatings
🏗️ Construction Chemicals
- Wall Putty & Skim Coat
- Cement Paint & Lime Wash
- Tile Grouts & Mortars
- Waterproofing Compounds
- Self-Levelling Flooring
- Decorative Plaster
- Pool Plaster & Render
⚙️ Rubber & Plastics
- Rubber Compounding (NR, SBR)
- PVC Compounds & Profiles
- Cable Insulation Compounds
- SMC / BMC Panels
- Plastic Masterbatch
- Technical Rubber Products
🔗 Adhesives & Sealants
- Silicone Sealants
- Polyurethane Adhesives
- Epoxy Structural Adhesives
- Construction Caulks
- Automotive Sealants
- Wood Adhesive Fillers
🔬 Specialty & Technical
- Dental Composites & Resins
- Pharmaceutical Excipients
- Technical Ceramics
- Fibrecement & Boards
- Cosmetics & Personal Care
- Electronic Encapsulants
🏭 Glass & Refractories
- Container Glass Batch
- Float Glass Production
- Refractory Castables
- Kiln Furniture Coatings
- Foundry Cores & Moulds
- Insulation Materials
🌐 Multilingual Industry & Product Names — For Global Buyers
Aalok Overseas India serves buyers across multiple continents. Our product is known by different names worldwide:
Chemical Composition & Grade Specifications
All batches are tested by XRF (X-Ray Fluorescence Analysis) and particle size analysis (laser diffraction) before dispatch. A Certificate of Analysis (CoA) issued by accredited laboratories is provided with every shipment.
| Parameter | Standard Grade | Paint Grade | Ultra-Pure Grade | Surface Coating | Filler Grade |
|---|---|---|---|---|---|
| SiO₂ (Silica) | 98.0–98.8% | 98.5–99.2% | 99.2–99.8% | 98.8–99.5% | 97.5–98.5% |
| Al₂O₃ (Alumina) | <0.80% | <0.60% | <0.40% | <0.50% | <1.00% |
| Fe₂O₃ (Iron Oxide) | <0.12% | <0.05% | <0.03% | <0.04% | <0.15% |
| TiO₂ | <0.06% | <0.04% | <0.02% | <0.03% | <0.08% |
| CaO | <0.10% | <0.08% | <0.05% | <0.06% | <0.15% |
| MgO | <0.08% | <0.05% | <0.03% | <0.04% | <0.10% |
| K₂O + Na₂O | <0.50% | <0.35% | <0.20% | <0.25% | <0.60% |
| LOI (Loss on Ignition) | <0.30% | <0.20% | <0.10% | <0.15% | <0.40% |
| Moisture | <0.50% | <0.30% | <0.20% | <0.20% | <0.50% |
| Whiteness (Hunter Lab) | 82–88% | 88–93% | 93–97% | 90–95% | 78–85% |
| pH (5% slurry) | 6.5–7.5 | 6.8–7.2 | 7.0–7.5 | 6.8–7.2 | 6.5–7.5 |
| Oil Absorption (g/100g) | 18–25 | 16–22 | 14–20 | 15–21 | 20–28 |
| Specific Gravity | 2.63 – 2.66 g/cm³ | ||||
| Mohs Hardness | 7.0 | ||||
| Refractive Index | 1.544 – 1.553 | ||||
| Melting Point | 1710°C | ||||
In high-quality white and pastel architectural paints, even 0.10% Fe₂O₃ can introduce a visible yellow-grey tint, reduce brightness, and lower the Hunter Lab whiteness index by 3–6 points. Aalok Overseas Paint Grade Quartz consistently achieves Fe₂O₃ below 0.05% — achieved through high-intensity wet magnetic separation (WHIMS) — ensuring paint formulators maintain maximum whiteness and colour integrity without sacrificing loading levels.
Complete Mesh, Micron & Application Guide — 30 Mesh to 1250 Mesh
The right particle size is critical to performance. Coarser grades impart texture and anti-slip properties; finer grades improve gloss, flow, and filler packing density. Aalok Overseas supplies the full range.
| Mesh / Grade | D50 (µm) | D97 (µm) | Key Applications | Packing |
|---|---|---|---|---|
| 30–60 Mesh | 300–500 | 600 | Texture paints, decorative plaster, floor coatings, grouts, anti-slip surfaces | 50 kg / Bulk Bags |
| 100 Mesh | 120–150 | 180 | Exterior wall coatings, cement paints, putties, wall textures | 50 kg PP Bags |
| 150 Mesh | 80–100 | 130 | Industrial primers, epoxy coatings, road markings, tile adhesives | 50 kg PP Bags |
| 200 Mesh | 55–75 | 100 | General paint filler, rubber compounding, adhesives, sealants | 50 kg Laminated Bags |
| 300 Mesh | 35–50 | 75 | Interior emulsion paints, powder coatings, construction chemicals |
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