Silica Dimethyl Silylate — CAS 68611-44-9

Description

1. Product Overview

Silica Dimethyl Silylate (CAS 68611-44-9) is a hydrophobic fumed silica derivative treated with dimethylsilyl groups to enhance moisture resistance, thickening performance, and rheological control. It is widely used as a high-performance functional additive in cosmetics, personal care, coatings, adhesives, sealants, and specialty industrial formulations. The product delivers superior dispersion, anti-settling properties, and improved texture control, making it a critical ingredient for manufacturers seeking formulation stability and premium product performance. Its growing importance is driven by increasing demand for advanced silicone-based materials with enhanced durability, efficiency, and processing advantages.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Hydrophobic silica modified with dimethylsilyl surface groups
• CAS Number: 68611-44-9
• Chemical Formula: SiO₂ modified with dimethylsilyl functional groups
• Purity / Grade: Industrial grade; cosmetic grade available depending on application requirements
• Appearance: Fine white powder with excellent flowability
• Particle Size: Typically nano-scale primary particle structure with high surface area
• Surface Property: Highly hydrophobic, moisture-resistant, and oil-compatible
• Bulk Density: Generally low-density powder suitable for advanced formulation applications
• Solubility: Insoluble in water; dispersible in organic and silicone-based systems
• Packaging Options: 10 kg, 15 kg, 20 kg, or 25 kg multi-layer kraft bags with moisture protection; customized bulk packaging available
• Shelf Life: Typically 24 months when stored in a sealed container under dry, cool conditions

3. Core Industrial Applications

• Cosmetics & Personal Care: Used as a thickener, anti-caking agent, texture enhancer, and oil-absorption modifier in creams, makeup products, sunscreens, and silicone-based formulations.
• Silicone-Based Products: Improves viscosity control, stability, and sensory properties in silicone gels, elastomers, and specialty silicone compounds.
• Coatings & Paints: Enhances anti-settling performance, flow control, scratch resistance, and durability of industrial coatings.
• Adhesives & Sealants: Provides reinforcement, rheology modification, and improved mechanical strength in high-performance bonding systems.
• Plastics & Rubber: Functions as a reinforcing filler to improve processing performance and final product characteristics.

Performance Advantages: Compared with conventional silica, Silica Dimethyl Silylate offers improved hydrophobicity, better compatibility with non-polar systems, enhanced moisture resistance, and superior long-term formulation stability.

4. Competitive Advantages

• Consistent Quality Performance: Manufactured under controlled processes to ensure reliable particle characteristics, surface treatment quality, and batch-to-batch consistency.
• Reliable Global Supply: Supported by scalable production capacity and established supply chains for industrial and specialty chemical buyers.
• Logistics Capability: Available in export-ready packaging with flexible shipment options for bulk international orders.
• Cost Efficiency: Provides high functional performance at low usage levels, reducing formulation costs and improving manufacturing efficiency.
• Sustainability Benefits: Supports longer product lifespan and improved formulation efficiency through enhanced stability and durability.
• Technical Documentation: Available with COA, SDS, specification sheets, and technical support for application optimization and regulatory compliance.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: Approximately 20 MT per 20-foot container (subject to packaging configuration and shipping requirements)