Speciality Chemicals

Dodecyltrimethoxysilane

  • CAS No.3069-21-4
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High-purity silane coupling agent designed for superior waterproofing and inorganic material surface treatment.

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Product Technical Details

Product Overview

Dodecyltrimethoxysilane is a premier organosilicon compound engineered for advanced surface modification and hydrophobic protection. As a long-chain alkyl silane, it serves as a critical functional additive in various industrial sectors, ranging from construction materials to optical instrumentation. Our manufacturing process ensures exceptional purity levels, making it an ideal choice for demanding applications where performance consistency and chemical stability are paramount.

The unique molecular structure features a reactive trimethoxysilyl group capable of forming robust covalent bonds with inorganic substrates, while the dodecyl chain provides significant water repellency. This dual functionality allows for enhanced compatibility between organic polymers and inorganic fillers, improving mechanical properties and environmental resistance in composite materials.

Technical Specifications

ParameterSpecification
AppearanceColorless transparent liquid
Content (Purity)96% minimum
Density (20°C)0.8900±0.0050 g/cm³
Refractive Index (20°C)1.4270±0.0050
Safety ClassificationNon-dangerous goods

Key Industrial Applications

This versatile silane coupling agent is extensively utilized across multiple high-value industries. In the construction sector, it acts as a powerful waterproofing agent, forming a protective hydrophobic layer on substrates that effectively prevents water seepage, UV degradation, and erosion from acidic or alkaline environments. This significantly extends the service life of building materials and infrastructure.

For material science applications, it is primarily employed to process inorganic fillers such as glass, silica, kaolin, ceramics, mica, silicon carbide, and talc. By modifying the surface energy of these materials, it improves their compatibility with organic matrices like plastics, rubber, and adhesives. This results in enhanced dispersion, reduced viscosity during processing, and superior mechanical strength in the final composite products.

In the optical and precision instrument industry, Dodecyltrimethoxysilane provides essential protection for blank glass and film-treated surfaces, including anti-reflection and reflective coatings. It safeguards delicate optical parts and graduated instruments from environmental damage. Furthermore, it plays a vital role in cultural heritage conservation, protecting outdoor relics from acid corrosion, freeze-thaw cycles, and weathering without altering their aesthetic appearance.

Performance Advantages

  • Superior Hydrophobicity: The C12 alkyl chain provides excellent water repellency and moisture resistance.
  • Enhanced Adhesion: Promotes strong chemical bonding between organic and inorganic phases.
  • Environmental Durability: Protects substrates from UV radiation, acid rain, and thermal cycling.
  • Processing Efficiency: Improves filler dispersion and reduces compound viscosity in rubber and plastic formulations.
  • Versatile Compatibility: Suitable for a wide range of substrates including glass, metals, and minerals.

Our commitment to quality ensures that every batch meets rigorous international standards. We provide comprehensive technical support and documentation, including Certificates of Analysis (COA), to facilitate seamless integration into your production processes. Partner with us for reliable supply chain solutions and competitive pricing on bulk orders.