Calcium carbonate is one of the most widely used industrial minerals on earth, with applications spanning virtually every manufacturing sector. Its chemical formula CaCO₃ represents a white, naturally occurring mineral that is commercially supplied in two main production routes — each with distinct properties and end-use characteristics.
GCC — Ground Calcium Carbonate
Ground Calcium Carbonate (GCC) is produced by mechanically crushing and milling natural limestone, marble or chalk. Hibernia General sources GCC from high-purity limestone deposits, processed to controlled particle size distributions. Available in uncoated form for water-based and aqueous applications, and stearic-acid coated for polymer compatibility — reducing moisture absorption and improving mechanical properties in plastics and rubber.
PCC — Precipitated Calcium Carbonate
Precipitated Calcium Carbonate (PCC) is a synthetically manufactured product formed by reacting calcium hydroxide with carbon dioxide. The process allows precise control over particle size, crystal morphology (scalenohedral, cubic, acicular) and purity — making PCC the premium choice for paper coating, pharmaceutical excipients, food-grade applications (E170), and specialty plastics where consistency is paramount.
Ultra-Fine & Micronized Grades
For high-performance applications such as premium architectural paints, automotive coatings, and cosmetic-grade products, we supply ultra-fine micronized grades with d50 particle sizes down to 1–5 microns. These grades offer exceptional opacity, high surface area, and tight particle-size distribution suitable for the most demanding formulations.
GCC — Uncoated
Ground from natural high-purity limestone. Bright white, cost-effective filler. Ideal for construction, PVC profiles, and dry-mix mortars.
- CaCO₃ Purity ≥ 97%
- Brightness ≥ 95%
- Mesh Range 200 – 1250
- Oil Absorption 18–22 g/100g
GCC — Coated (Stearic Acid)
Surface-treated with stearic acid for polymer compatibility. Better dispersion, reduced moisture absorption, enhanced mechanical properties in plastics and rubber.
- CaCO₃ Purity ≥ 97%
- Stearic Coating 0.8 – 1.2%
- Mesh Range 400 – 2500
- Oil Absorption 15–18 g/100g
PCC — Precipitated
Synthetically manufactured for high purity, controlled particle size, and defined crystal morphology. Premium grade for paper, pharma, and food.
- CaCO₃ Purity ≥ 99%
- Brightness ≥ 98%
- Whiteness ≥ 96%
- Morphology Scalenohedral / Cubic
Ultra-Fine / Micronized
Particle sizes down to 1–5 microns for high-performance applications in premium paints, cosmetics, and specialty coatings where fineness is critical.
- D50 1 – 5 µm
- BET Surface Area High
- Moisture ≤ 0.2%
- Iron (Fe₂O₃) ≤ 0.01%
| Parameter | GCC Uncoated | GCC Coated | PCC |
|---|---|---|---|
| CaCO₃ Content | ≥ 97% | ≥ 97% | ≥ 99% |
| Brightness (GE) | ≥ 95% | ≥ 95% | ≥ 98% |
| Whiteness | ≥ 93% | ≥ 93% | ≥ 96% |
| Moisture | ≤ 0.3% | ≤ 0.3% | ≤ 0.2% |
| MgO Content | ≤ 0.5% | ≤ 0.5% | ≤ 0.1% |
| Fe₂O₃ | ≤ 0.06% | ≤ 0.06% | ≤ 0.01% |
| SiO₂ | ≤ 0.3% | ≤ 0.3% | ≤ 0.05% |
| Oil Absorption | 18–22 g/100g | 15–18 g/100g | Variable |
| Hardness (Mohs) | 3 | 3 | 3 |
| Specific Gravity | 2.7 g/mL | 2.6 g/mL | 2.7 g/mL |
| Packaging | 25kg PP bags · 1MT Jumbo Bags · Bulk | ||
Full Certificate of Analysis (COA) issued per batch. Custom mesh sizes and coating treatments available on request.
Packaging Options
- 25 kg PP woven bags Standard
- 1 MT FIBC Jumbo Bags Bulk handling
- Bulk vessel On request
- Pallet shrink-wrap Optional
- Private label Available
Trade Terms
- FOB Dubai / Jebel Ali ✓
- CIF Destination ✓
- CFR Destination ✓
- EXW Dubai ✓
- L/C, T/T accepted ✓
Documentation
- Certificate of Analysis Every batch
- Packing List Every shipment
- Bill of Lading Provided
- Certificate of Origin UAE / Source
- MSDS / SDS Available