Coated Calcium Carbonate - Complete Product Description
Coated Calcium Carbonate (CaCO3) is a high-quality, ultra-fine mineral filler produced from natural limestone and surface-treated with stearic acid. NBT (NBTHQ) supplies this premium-grade filler to PVC compounders, rubber manufacturers, paint producers, and plastics processors across India and export markets.
Chemical & Physical Specifications:
- Chemical Formula: CaCO3
- CAS Number: 471-34-1
- Particle Size: 1-3 microns (D50)
- Whiteness: ≥95% (ISO brightness)
- Moisture Content: ≤0.3%
- Surface Treatment: Stearic acid coated
- Oil Absorption: 25-30 g/100g
- pH: 9.0-9.5
- Bulk Density: 0.65-0.75 g/cm³
Key Benefits for PVC Processing:
- Cost Efficiency: Allows up to 15% loading in PVC formulations reducing compound cost significantly
- Processing Aid: Stearic acid coating reduces viscosity and improves melt flow
- Mechanical Properties: Maintains impact strength and tensile strength of finished products
- Surface Quality: Ultra-fine particle size delivers smooth surface finish
- Thermal Stability: Stable at PVC processing temperatures (160-200°C)
- Whiteness Enhancement: High whiteness index contributes to color consistency
Applications:
- Rigid PVC pipes and fittings
- PVC window profiles and door frames
- PVC cable compounds
- Flexible PVC sheets and films
- Rubber compounds (EPDM, NBR)
- Interior emulsion paints
- Masterbatches and color compounds
- Adhesives and sealants
Packaging Options:
- 25 kg PP bags (standard)
- 500 kg jumbo bags
- Bulk tanker for large orders
Why Choose NBT Coated Calcium Carbonate?
NBT's Coated Calcium Carbonate is manufactured under ISO-certified processes with strict QC at each batch. Each delivery includes a Certificate of Analysis (CoA) with particle size distribution, whiteness, moisture, and oil absorption data. NBT provides technical application support to help customers optimize their formulations for maximum cost savings and quality.
Description provided by Nav Bharat Technologies.
