China Supply Calcium Carbonate – 325-2500 Mesh Available

• Customization: Available
• CAS No.: 471-34-1
• EINECS: 207-439-9
• Model NO.: CC-2
• Solubility: Insoluble in Water
• Type: Calcium Carbonate
• Grade Standard: Industrial Grade
• Transport Package: 25kg/Bag
• Origin: China
• HS Code: 283650
• Production Capacity: 50000mt/Year

Product Description

Product Introduction

 

Chemical Formula: CaCO3 | CAS No.: 471-34-1 | EINECS: 207-439-9
Appearance: Fine white powder or granules
Purity: 95-99% | Mesh Size: 325-2500 (customizable)
HS Code: 2836.50.00 (Natural), 2836.50.90 (Precipitated)
 

Key Features:
-- Cost-effective filler & performance enhancer
-- Improves mechanical properties (stiffness, whiteness)
-- Available in coated and uncoated forms

 Key Technical Data

 

Parameter	Specification
CAS No.	471-34-1
Molecular Formula	CaCO3
EINECS No.	207-439-9
Purity	95-99% (Customizable)
Mesh Size	325 mesh, 800 mesh, 1250 mesh, 2500 mesh
Brightness	90-97% (ISO 2470)
Moisture	≤0.2%
pH Value	8-9 (10% Suspension)
Solubility	Insoluble in water (0.0014 g/100 mL at 25°C), soluble in acid
HS Code	2836.50.00 (Natural), 2836.50.90 (Precipitated)

Detailed Specifications

 

• Appearance: White fine powder or granules

• Bulk Density: 0.7-1.2 g/cm³ (varies by mesh size)

• Oil Absorption: 15-30 g/100g (ASTM D281)

• Loss on Ignition (LOI): ≤43% (at 1000°C)

• Heavy Metals: Pb ≤10 ppm, As ≤3 ppm (Food-grade available)

 

Primary Applications

 

1. Plastics & Polymers

• Function:

  • Reduces material costs (20-40% loading in PVC/PP/PE).

  • Enhances impact strength (nano CaCO3 for engineering plastics).

• Grades:

  • Stearic acid-coated: For better polymer bonding.

  • Nano CaCO3: For high-end composites.
     

2. Paints & Coatings

• Benefits:

  • Replaces 10-30% TiO2 (cost savings).

  • Improves opacity & weather resistance.

• Recommended: 1250+ mesh for smooth finishes.
   

3. Rubber Industry

• Role:

  • Reinforcing filler in tires, hoses (10-30% loading).

  • Silane-treated CaCO3 boosts tensile strength.
     

4. Construction Materials

• Uses:

  • Cement additive (5-15% for faster setting).

  • Tile adhesive filler (improves workability).
     

5. Paper Manufacturing

• Advantages:

  • Coating pigment for high-gloss paper.

  • Filler to reduce pulp usage.
    
    
     

• Usage Guidelines

   

  Dosage by Industry

  Application	Typical Loading	Notes
  PVC Pipes	20-40%	Coated CaCO3 preferred
  Water-Based Paint	10-25%	Adjust based on TiO2 replacement
  Rubber Compounds	15-30%	Use activated CaCO3
  Dry Mix Mortar	5-15%	Mix uniformly with cement

  
  Mixing Instructions

• For Plastics: Pre-dry at 105°C (2 hrs), blend via extrusion.

• For Paints: Add during pigment dispersion (1200+ rpm).

Critical Precautions

 

• Storage:

  • Keep in dry, sealed containers (RH <60%) to prevent caking.

  • Avoid contact with acids (releases CO2 gas).
     

• Handling:

  • Wear dust masks (for fine powders) and goggles.

  • Use anti-static equipment for bulk loading (dust explosion risk).
     

• Compatibility:

  • Not suitable for acidic environments (pH <5).

  • Test heat stability if used in plastics >200°C.

 

 

Why Choose Our Calcium Carbonate?

- Customizable: Particle size (2-50µm), surface treatment 
- Stable Supply: 50,000 MT/year production capacity
- Technical Support: Free sample testing & formulation advice