Silica

Description

1. Product Overview
   Silica (SiO₂) is a high-performance, versatile inorganic material widely used across industrial manufacturing sectors. It serves as a critical functional additive in rubber, plastics, coatings, construction materials, and chemical processing due to its reinforcing, thickening, and anti-caking properties. Its value lies in its exceptional stability, surface chemistry control, and adaptability across multiple formulations. Silica plays a strategically important role in improving product durability, mechanical strength, and process efficiency, making it an essential raw material in global supply chains.
2. Key Specifications & Technical Characteristics

• Chemical Composition: Silicon Dioxide (SiO₂)
• Purity Level: 90% – 99.9% (depending on grade: precipitated, fumed, or crystalline)
• Physical Form: Fine white powder / amorphous powder / granulated form
• Particle Size:
  • Fumed Silica: 5–50 nm
  • Precipitated Silica: 5–25 microns
• Density: ~2.2 g/cm³ (true density), variable bulk density by grade
• Color: White to off-white
• Packaging Options: 25 kg bags, 500 kg / 1000 kg jumbo bags
• Shelf Life: 24–36 months under dry storage conditions

3. Core Industrial Applications
   Silica is extensively used in the rubber and tire industry as a reinforcing agent that enhances abrasion resistance and fuel efficiency. In coatings, paints, and adhesives, it functions as a rheology modifier and anti-settling agent, improving viscosity control and finish quality. It is also applied in plastics to increase strength and thermal stability, and in construction materials to improve cement performance and durability. Additionally, food-grade silica is used as an anti-caking agent, ensuring free-flowing powders in food and pharmaceutical formulations. Its superior performance compared to fillers like calcium carbonate lies in its higher surface area, stronger reinforcement capability, and chemical stability.
4. Competitive Advantages

• High consistency in particle size distribution and purity across batches
• Reliable global supply chain ensuring uninterrupted industrial production
• Strong performance-to-cost ratio compared to alternative fillers
• Enhanced mechanical reinforcement and superior dispersion properties
• Environmentally stable and chemically inert, supporting sustainable formulations
• Full technical documentation and application support available for industrial integration

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: 20–24 MT per 20ft container / 25–27 MT per 40ft container
• Supply Type: Bulk export shipments with flexible contract supply options
• Packaging: Industrial-grade moisture-resistant packaging for long-distance transport