Calcium Carbonate 1250mesh Ultra Fine Powder for Paints

Product Description
Calcium carbonate (CaCO₃) is a premium-grade, multifunctional inorganic filler renowned for its exceptional purity and versatility. This ultra-fine white powder exhibits outstanding physical and chemical properties that make it indispensable across numerous industrial applications. Characterized by its non-toxic nature, neutral taste, and non-irritating qualities, our calcium carbonate meets the most stringent quality standards for diverse industrial uses.

Key Characteristics

• Physical State: Dry, free-flowing white powder

• Moisture Content: <0.2% (non-hygroscopic)

• Odor: Completely odorless

• Taste: Neutral and tasteless

• Stability: Excellent air stability with no crystalline water content

Chemical Properties

• Chemical Formula: CaCO₃

• Molecular Weight: 100.09 g/mol

• Solubility Profile:

  • Water solubility: 0.0014 g/100mL at 25°C

  • Alcohol: Insoluble

  • Dilute acids (HCl, HNO₃, CH₃COOH): Soluble with effervescence upon heating

• Thermal Decomposition:

  • Decomposes at 825-900°C to calcium oxide (CaO) and carbon dioxide (CO₂)

  • Endothermic reaction: ΔH = 178 kJ/mol

Technical Advantages

1. Economic Benefits:

   • Cost-effective alternative to more expensive fillers

   • Abundant natural availability ensures stable supply

   • High purity grades available (up to 99.9%)

2. Performance Attributes:

   • Excellent brightness and whiteness (94-98% ISO)

   • Low oil absorption (15-25g/100g)

   • Controlled particle size distribution

   • Superior rheological properties

   • Enhanced mechanical strength in composites

3. Processing Benefits:

   • Improves processing efficiency

   • Reduces production costs

   • Enhances product consistency

   • Compatible with various manufacturing processes

Manufacturing Process
Our calcium carbonate undergoes rigorous processing:

1. Raw Material Selection: Premium limestone sources

2. Size Reduction:

   • Primary crushing

   • Precision grinding

   • Air classification

3. Surface Treatment (for specific grades):

   • Stearic acid coating

   • Titanate coupling agents

   • Silane treatment

4. Quality Control:

   • Laser particle size analysis

   • Chemical purity testing

   • Brightness measurement

   • Bulk density verification

Product Grades & Applications

Industrial Grade

• Particle Size: 2-45μm

• CaCO₃ Content: ≥98%

• Applications:

  • Plastic composites (PP, PVC, PE)

  • Rubber products

  • Paint and coating systems

  • Adhesive formulations

  • Construction materials

Food & Pharmaceutical Grade

• Purity: ≥99%

• Heavy Metals: <10ppm

• Certifications:

  • FDA 21 CFR 184.1

  • EU E170

  • USP/NF

• Applications:

  • Dietary supplements

  • Pharmaceutical tablets

  • Food additives

  • Baking ingredients

Cosmetic & Personal Care Grade

• Whiteness: ≥96% ISO

• Particle Size: 1-15μm

• Applications:

  • Toothpaste formulations

  • Makeup products

  • Skincare preparations

  • Body powders

Paper Coating Grade

• Brightness: 92-96% ISO

• Particle Shape: Controlled morphology

• Applications:

  • Paper filling (15-35% loading)

  • Coating pigments

  • Improved print surfaces

Technical Specifications

• Bulk Density: 0.7-1.1 g/cm³

• Specific Gravity: 2.7-2.9 g/cm³

• Refractive Index: 1.59

• Mohs Hardness: 3.0

• pH Value: 8.0-9.5 (10% suspension)

Quality Assurance

• ISO 9001:2015 certified production

• Comprehensive testing protocols:

  • XRD analysis

  • ICP-OES elemental analysis

  • BET surface area measurement

  • Microbial testing (for hygiene grades)

• Batch-to-batch consistency control

Packaging Options

• Standard Packaging:

  • 25kg multi-wall paper bags

  • 500kg FIBC bulk bags

  • 1-ton super sacks

• Custom Packaging:

  • Customer-specific labeling

  • Special moisture barriers

  • Dedicated production batches

Storage & Handling

• Storage Conditions:

  • Temperature: 10-30°C

  • Relative humidity: <65%

  • Dry, well-ventilated area

• Shelf Life: 36 months in original packaging

• Safety Precautions:

  • Use dust control measures

  • N95 respirator recommended

  • Eye protection advised

Technical Support Services

• Application development assistance

• Formulation optimization

• Processing troubleshooting

• Regulatory compliance guidance

• Custom product engineering

Industry Applications

• Plastics Industry: 30-70% filler content

• Paper Manufacturing: 15-40% loading

• Paints & Coatings: 10-30% extender

• Rubber Products: 20-60% reinforcement

• Construction Materials:

  • Putty (25-50%)

  • Sealants (10-25%)

  • Tile adhesives

• Consumer Goods:

  • Toothpaste (15-50%)

  • Cosmetics (5-20%)

  • Food products (0.5-5%)

Environmental Profile

• Naturally occurring mineral

• Non-toxic and biodegradable

• REACH compliant

• RoHS compliant

• Sustainable production processes

Ordering Information

• Minimum Order Quantity: 500kg

• Sample Availability: 1-2kg technical samples

• Lead Time: 2-3 weeks standard production

• Global Distribution Network

This comprehensive technical specification highlights why calcium carbonate remains the most widely used mineral filler across global industries. For application-specific recommendations or custom product development, our technical team provides expert consultation to optimize your formulations and manufacturing processes.

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