Calcium Carbonate 600mesh Fine Grade Powder for Paints

Product Overview
Our premium 600 mesh calcium carbonate powder is specifically engineered for high-performance paint formulations. This ultra-fine grade filler combines exceptional whiteness with optimal particle size distribution to deliver superior performance in both water-based and solvent-based coating systems.

Key Specifications

• Particle Size: 600 mesh (approximately 23 microns)

• Whiteness: ≥95% (ISO 2470)

• Brightness: ≥96% (GE)

• Oil Absorption: 18-22g/100g (ASTM D281)

• Specific Gravity: 2.7-2.9 g/cm³

• Moisture Content: ≤0.3%

• pH Value: 8.5-9.5 (10% aqueous solution)

Manufacturing Process

• Sourced from high-purity limestone deposits

• Precision dry grinding with air classification

• Multi-stage quality control checks

• Surface treatment options available (stearic acid, silane)

Performance Advantages in Paints
Optical Properties

• Excellent dry hiding power

• Enhanced brightness and whiteness

• Improved color acceptance

• Reduced titanium dioxide requirements (up to 15% replacement)

 Rheological Benefits

• Low oil absorption improves formulation economics

• Excellent dispersion characteristics

• Reduced viscosity at high loadings

• Improved brushability and flow

 Film Properties

• Increased scrub resistance

• Enhanced durability

• Improved weathering characteristics

• Reduced mud-cracking tendency

Technical Comparison
| Property | Our 600 Mesh | Standard 400 Mesh | Competitive 600 Mesh |
|----------|-------------|------------------|----------------------|
| Whiteness | 96% | 93% | 95% |
| Oil Absorption | 20 | 25 | 22 |
| TiO₂ Replacement | 15% | 10% | 12% |
| Dispersion Ease | Excellent | Good | Very Good |
| Cost Efficiency | High | Medium | Medium |

Recommended Formulations

• Architectural paints: 10-25% by weight

• Industrial coatings: 5-15%

• Primer systems: 15-30%

• Texture coatings: 20-40%

Surface Treatment Options
Stearic Acid Coated (1-2%)

• Improved hydrophobic properties

• Better compatibility with resin systems

• Reduced moisture absorption

Silane Treated

• Enhanced adhesion promotion

• Improved mechanical properties

• Better dispersion in high-solids systems

Quality Assurance

• ISO 9001:2015 certified production

• Batch-to-batch consistency

• Comprehensive technical data sheets

• Sample availability for testing

Sustainability Features

• Low VOC contribution

• Non-toxic and non-hazardous

• REACH compliant

• Contributes to LEED points

Packaging Options

• 25 kg multi-wall paper bags

• 1,000 kg bulk bags

• Custom packaging available

• Palletized for easy handling

Storage & Handling

• Store in dry conditions

• Shelf life: 24 months

• Standard powder handling equipment suitable

• Non-flammable and non-reactive

Technical Support Services

• Formulation assistance

• Compatibility testing

• Performance optimization

• Troubleshooting support

Application Guidelines

• Disperse using standard high-speed mixers

• Recommended addition during letdown phase

• Compatible with most dispersing agents

• No special processing requirements

Performance Data

• Scrub resistance: +25% vs. standard fillers

• TiO₂ extension efficiency: 12-15%

• Viscosity reduction: 15-20% at equal loading

• Film smoothness: PPS ≤1.5 μm

Market Advantages

• Consistent quality from global supply base

• Technical expertise available

• Custom particle size distributions possible

• Competitive pricing structures

Emerging Applications

• Low-VOC coatings

• High-solids formulations

• Antimicrobial paint systems

• Self-cleaning coatings

This specialized 600 mesh calcium carbonate powder represents an optimal balance between performance and cost-efficiency for modern paint formulations. Its carefully controlled particle characteristics make it particularly suitable for high-quality coating systems where optical properties, rheological performance, and formulation economics are critical considerations. Our technical team is available to support customers in optimizing formulations for specific application requirements.

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