Micronized Calcium Carbonate Powder — Uncoated
Mesh 400 Calcium Carbonate — Uncoated Powder
MAD KOOHZAD's mesh 400 micronized calcium carbonate (Uncoated Powder) is produced with a 33 microns particle size. The golden cost/performance balance — our most widely used grade in polymer and paint industries.
Particle Size & Fineness
Particle size of 33 microns (mesh 400), with a bulk density of 1.2 – 1.4 g/cm³.
Whiteness Index
Whiteness index of 98.2 – 98.5%, suited to formulations sensitive to final color uniformity.
Oil Absorption
18 – 22 g/100g — matched to this particle-size range for precise formulation control.
This Grade's Key Advantage
The golden cost/performance balance — our most widely used grade in polymer and paint industries.
Industrial Applications of Mesh 400 Calcium Carbonate (Uncoated Powder)
The golden cost/performance balance — our most widely used grade in polymer and paint industries. This grade is primarily used in the following industries: PVC & UPVC compounds, Masterbatch carrier, Water-based paint & resin, Cable & wire, Adhesives & mastics.
Mineral-base purity: 98.0% – 99.5% — Moisture: 0.2% max — pH (10% suspension): 8.5 – 9.5 (10% solution). Packaging available: 25 kg bags, Jumbo bags (500 – 1,000 kg), Bulk (truck / silo container).
Comprehensive Analysis of Mesh 400 Calcium Carbonate (Uncoated Powder): From Technical Data to Industrial Solutions
In this section, we go beyond the specification sheet and into the strategic depth of mesh 400 calcium carbonate. Our goal is to show you exactly how every technical parameter on the analysis sheet translates directly into a competitive advantage, a cost reduction, or a quality gain on your production line. This in-depth analysis helps you make the best decision for your business with full confidence.
Beyond an Additive: Mesh 400 Calcium Carbonate as a Strategic Investment
At MAD KOOHZAD, we don't sell calcium carbonate as a mere raw material; we deliver durable solutions for optimizing your production. Choosing a low-quality or unsuitable calcium carbonate carries hidden risks — weaker mechanical properties, color drift between batches, faster equipment wear, and ultimately, unhappy end customers. Our mesh 400 product, with its guaranteed purity and tightly controlled particle size, eliminates these risks. This product isn't a cost — it's an investment in stable quality, less waste, and protecting your brand's reputation in the market. We stand beside you to help you reach these goals.
Decoding the Analysis Sheet: What Every Number in the Spec Table Means for Your Business
A technical data sheet (TDS) isn't just a list of numbers — it's a roadmap to your formulation's success. Below, we break down the most important technical parameters of mesh 400 calcium carbonate:
1. Whiteness index 98.2 – 98.5% — technical significance: impurities such as silica (SiO₂) or iron oxide (Fe₂O₃) can abrade machinery, discolor the final product (especially in white and light-colored formulations), and trigger unwanted reactions. This product's high whiteness means maximum chemical stability and minimal negative impact on your process.
2. Oil absorption (18 – 22 g/100g) — economic significance: this parameter directly affects your product's finished cost. The lower a filler's oil absorption, the less of the expensive resins, lubricants, and plasticizers you'll need in your formula. Our product's controlled oil absorption means direct savings on your costs.
3. Precise 33 microns particle size (mesh 400) — functional significance: this is exactly this grade's "sweet spot." The particle size is fine enough to give good dispersion and a smooth surface in the final product, yet coarse enough not to make mixing complex or costly. This means achieving the desired mechanical properties without raising your process costs.
Specialized Solutions for Mesh 400: Solving Real Challenges Across Industries
Our mesh 400 calcium carbonate isn't a one-size-fits-all product — it's a precise solution for specific challenges in the following industries:
Plastics, cable & masterbatch industry — Common challenge: Raising the filler-loading percentage in a compound without losing melt flow in the extruder or weakening the final part's strength. MAD KOOHZAD's solution: This grade's mid-range particle size balances a high specific surface (for good dispersion) against ease of mixing in standard equipment, making it the compounding industry's default choice. Result for you: Higher filler loading, lower raw-material cost, and stable flow on the production line.
Paint, coating & paper industry — Common challenge: Achieving a smoother, more uniform final surface in semi-premium paints and paper coating/filler, without a marked rise in formulation cost. MAD KOOHZAD's solution: This grade's whiteness and particle uniformity give better hiding power and spreading control than coarser grades, while its cost stays economical. Result for you: A more uniform final surface and higher end-customer satisfaction, without jumping to premium-grade pricing.
Technical FAQ: Mesh 400 Calcium Carbonate
How does the "reduced TiO₂ consumption" claim for mesh 400 actually work in practice, and what's its limit?
This happens through what's called the "spacing effect." Expensive titanium-dioxide (TiO₂) particles tend to agglomerate in a formulation, losing hiding-power efficiency. Mesh 400 calcium-carbonate particles act as spacers, sitting between TiO₂ particles and optimally distributing them through the matrix — so each titanium particle shows its maximum light-scattering (hiding) power. Limit: this effect continues up to an "optimal point." Adding too much calcium carbonate can reduce gloss and abrasion resistance. Our specialists can help you find that optimal point for your specific formulation.
Does adding mesh 400 to a PVC compound reduce impact strength?
No — used correctly, it doesn't just avoid reducing impact strength, it can improve it. Mesh 400 calcium carbonate, with its controlled particle size, acts as a stress-transfer agent. When the product is struck, the calcium-carbonate particles spread the impact energy across the polymer matrix, preventing stress concentration at a single point and crack initiation. The key to this working is complete dispersion with no agglomerates — which our product guarantees.
Do I need special equipment or expensive additives to fully disperse mesh 400 in a resin or polymer?
That's exactly one of this grade's strategic advantages: ease of dispersion. Unlike finer meshes (such as mesh 600), which have higher surface energy and tend to agglomerate more, requiring high-speed mixers or dispersing agents, mesh 400 disperses well with standard industrial mixing equipment. This significantly lowers your process cost and production complexity.
What effect does mesh 400 have on the final product's surface finish?
This grade is a smart balance. For most applications suited to this particle-size range, the final surface will be fully uniform and defect-free. But if your goal is very high gloss or producing very thin plastic films, finer grades may give a better result. Conversely, if cost is the more important factor, mesh 325 can be a more economical alternative.
Export packaging — 25 kg laminated bag
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