Coated Calcium Carbonate Stearate Mesh 2500 Made in Iran
Iranian stearate-coated calcium carbonate (CaCO₃) is a surface-treated mineral filler designed for superior compatibility with polymers. Available in mesh sizes of 400, 450, and 2500, this product features a stearic acid coating that enhances dispersion, reduces agglomeration, and improves mechanical properties in plastics, PVC, masterbatch, paints, and resins. With high purity and whiteness, it is a cost-effective functional filler that reduces formulation costs while maintaining performance.
The Supply Chain Department at Sahi Rasa Company supplies Iranian coated calcium carbonate for export to Afghanistan, Iraq, the Kurdistan Region, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria. Whether for plastics manufacturing, paint production, or masterbatch compounding, the department ensures reliable supply, competitive pricing, and comprehensive logistics support.
1. Introduction to the Supply Chain Department at Sahi Rasa Company
The Supply Chain Department at Sahi Rasa Company is a specialized unit in Iran responsible for sourcing, procurement, and export of mineral fillers, including high-quality stearate-coated calcium carbonate. This department manages the entire supply chain — from sourcing raw calcium carbonate from qualified deposits to delivering finished, surface-treated powder to factories abroad. By leveraging extensive experience in mineral processing and surface treatment, the department ensures that every shipment of coated calcium carbonate meets the technical specifications demanded by the plastics, paint, rubber, and masterbatch industries.
For clients in Afghanistan, the Kurdistan Region, Iraq, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria, the Supply Chain Department at Sahi Rasa Company offers flexible supply programs, technical consultation, and comprehensive logistics support.
2. Product Overview
Calcium carbonate (CaCO₃) is one of the most widely used mineral fillers in the plastics and paint industries. However, its hydrophilic surface makes it incompatible with hydrophobic polymers, leading to poor dispersion and reduced mechanical properties. To overcome this limitation, calcium carbonate is surface-treated with stearic acid, a fatty acid that reacts with the calcium carbonate surface to form a hydrophobic coating. This coating improves compatibility with non-polar polymers, reduces agglomeration, and enhances dispersion in plastic and rubber compounds.
Iranian stearate-coated calcium carbonate is available in mesh sizes of 400, 450, and 2500, with high purity and whiteness. The 2500 mesh grade is micronized for optimal dispersion in high-end plastics and masterbatch. The 400 and 450 mesh grades are suitable for general-purpose plastics, PVC, and rubber applications. In paints and resins, coated calcium carbonate provides opacity, brightness, and improved rheology.
3. Physical Specifications Table
| Parameter | Specification |
|---|---|
| Product Name | Coated Calcium Carbonate |
| Synonyms | Stearate-Coated Calcium Carbonate, Surface-Treated CaCO₃ |
| Chemical Formula | CaCO₃ |
| Appearance | White, fine powder |
| Purity | 99% |
| Whiteness | > 95% |
| Mesh Sizes Available | 400, 450, 2500 |
| Moisture Content | ≤ 1% |
| Oil Absorption (DOP) | 14 – 16 g/100g |
| pH | 8.5 – 9.5 |
| Coating | Stearic Acid |
| Packaging | 25 kg bags, 1 MT jumbo bags |
4. Chemical Specifications Table
| Component | Content (%) |
|---|---|
| CaCO₃ (Calcium Carbonate) | ≥ 99 |
| CaO (Calcium Oxide) | ≥ 55.5 |
| MgO (Magnesium Oxide) | ≤ 0.5 |
| Fe₂O₃ (Iron Oxide) | ≤ 0.05 |
| SiO₂ (Silicon Dioxide) | ≤ 0.5 |
| Al₂O₃ (Aluminium Oxide) | ≤ 0.1 |
| Moisture | ≤ 1.0 |
| Loss on Ignition (LOI) | 43 – 44% |
5. Industries & Factories Using This Product
Iranian coated calcium carbonate is utilized across several key industries. Major consumers include plastics and PVC manufacturers, masterbatch producers, paint and coating manufacturers, rubber and tire producers, and adhesive and sealant manufacturers.
6. Key Properties & Advantages
Iranian coated calcium carbonate offers high purity and whiteness, stearate coating for improved polymer compatibility and dispersion, controlled particle size distribution, cost-effective filler that reduces formulation costs, improved mechanical properties in plastics and rubber, and enhanced rheology and opacity in paints.
7. Chemical Formula / Size & Packaging Specifications
Chemical Formula: CaCO₃. Molecular Weight: 100.09 g/mol. CAS Number: 471-34-1. Packaging Options: 25 kg multi-wall paper bags with inner PE liner, 1 MT jumbo bags with discharge spouts, and custom packaging upon request.
8. Available Grades, Sizes, Qualities & Custom Colors
| Grade | Mesh Size | Coating | Typical Application |
|---|---|---|---|
| Coated | 400 mesh | Stearate | Plastics, rubber |
| Coated | 450 mesh | Stearate | PVC, general plastics |
| Coated | 2500 mesh | Stearate | Masterbatch, high-end plastics |
Quality Grades: Technical Grade. Custom Options: Custom mesh sizes and coating levels available upon request.
9. Sahi Rasa Supply Chain Department Services for International Factories
The Supply Chain Department at Sahi Rasa Company provides end-to-end supply chain services for international factories procuring Iranian coated calcium carbonate.
Monthly & Weekly Supply Planning: The department collaborates with client factories to establish supply schedules based on production forecasts and inventory levels.
Sourcing & Procurement: The procurement team conducts rigorous supplier qualification, evaluating purity, whiteness, coating quality, and particle size distribution.
Sample Dispatch: Clients can request free or commercial samples of coated calcium carbonate, accompanied by a Certificate of Analysis (COA).
Custom Manufacturing (OEM/ODM): The department coordinates OEM/ODM production with qualified processing partners for custom mesh sizes and coating levels.
Pre-Shipment Quality Control: The department implements pre-shipment quality control at the supplier's facility before loading. The QC team verifies purity, whiteness, moisture content, and coating level.
Loading & Handling: Professional loading and handling procedures protect product integrity during container stuffing.
Export Documentation: The department prepares and manages all export documentation required for coated calcium carbonate shipments.
International Transportation: The department arranges international transportation via sea freight (FCL/LCL), air freight, or land transport.
Export Customs Clearance: Customs brokers handle export customs clearance at ports and border crossings.
Import Customs Clearance: For clients requiring support at destination, the department can arrange import customs clearance through trusted local partners.
On-Site Technical Team Deployment: For large-scale plastics or masterbatch operations, the department can deploy a technical team to the client's factory.
Training & Knowledge Transfer: The department offers training programs covering proper handling, storage, and incorporation of coated calcium carbonate into polymer and paint formulations.
10. Why Choose the Supply Chain Department at Sahi Rasa Company?
The Supply Chain Department at Sahi Rasa Company offers reliable Iranian supply of high-purity coated calcium carbonate, quality assurance with pre-shipment QC and full documentation, flexible logistics solutions, comprehensive services, competitive pricing, and regional expertise in markets including Afghanistan, Iraq, Kurdistan, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria.
11. Ordering & Contact Information
International customers can place orders through the Request for Quotation (RFQ) form located at the bottom of this page. The expert team at the Supply Chain Department at Sahi Rasa Company will respond to all inquiries as soon as possible, providing complete information on pricing, delivery schedules, shipping terms, and export documentation.
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