Speciality Chemicals

Methyltriethoxysilane

  • CAS No.2031-67-6
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High-purity Methyltriethoxysilane (CAS 2031-67-6) designed for silicone resin synthesis, sol-gel coatings, and effective water repellent treatments.

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Product Technical Details

Product Overview

Methyltriethoxysilane is a versatile organosilicon compound widely recognized for its exceptional performance in industrial applications ranging from surface modification to polymer synthesis. As a key member of the alkoxysilane family, this chemical serves as a fundamental building block for creating durable silicone resins and advanced composite materials. Our manufacturing process ensures a high level of purity, making it an ideal choice for demanding chemical synthesis and formulation tasks where consistency and reliability are paramount.

This colorless clear liquid is engineered to provide superior crosslinking capabilities and hydrophobic properties. When integrated into various matrices, it significantly enhances the mechanical strength and environmental resistance of the final product. Manufacturers across the globe rely on this compound for its predictable reactivity and compatibility with a broad spectrum of organic substrates.

Chemical Properties and Behavior

The chemical structure of Methyltriethoxysilane allows for controlled hydrolysis and condensation reactions. Upon exposure to moisture, particularly in the presence of acidic or basic catalysts, the ethoxy groups hydrolyze to form silanols. These silanols subsequently condense to create robust siloxane bonds. This mechanism is crucial for forming three-dimensional networks in silicone resins and coatings. The compound exhibits excellent miscibility with standard organic solvents, including alcohols, hydrocarbons, and acetone, facilitating easy integration into existing formulation workflows.

While practically insoluble in neutral water, the substance reacts slowly to form higher condensation products. This controlled reactivity allows formulators to manage pot life and curing times effectively. The addition of specific hydrolytic catalysts, such as inorganic acids, organic acids, ammonia, or amines, can substantially accelerate the hydrolysis process, providing flexibility in processing conditions.

Industrial Applications

The versatility of this silane coupling agent opens up a wide array of industrial uses. Its primary function revolves around improving interfacial adhesion and providing water repellency. Key application areas include:

  • Sol-gel coating systems where thermal stability and hardness are required.
  • Silicone resin production for high-temperature resistant materials.
  • Silicone rubber compounding to enhance filler dispersibility.
  • Water repellent treatments for construction materials and textiles.
  • Reduction of sedimentation tendency in filled polymer systems.

Technical Specifications

Our quality control standards ensure that every batch meets rigorous specifications suitable for large-scale industrial use. The following table outlines the typical analytical data for our premium grade product:

Items of AnalysisStandard of AnalysisTest Results
AppearanceColorless transparent liquidConform
Assay, %≥9999.5
Color (Pt-Co)≤3010
Density (20℃, g/cm3)0.8920±0.0050.896
Free Cl, ppm≤105
Refractive Index (n25D)1.3820±0.0051.385
ConclusionConforms to Factory Standard

Storage and Handling

To maintain optimal quality and safety, proper storage protocols must be followed. The product should be stored in a cool, ventilated place away from direct sunlight and sources of ignition. Given its flash point of 30°C, it is classified as a flammable liquid, necessitating appropriate fire safety measures during handling and transportation. Containers should remain tightly sealed when not in use to prevent premature hydrolysis due to atmospheric moisture. With a density of approximately 0.895 g/cm3 and a boiling point range of 141-143°C, standard chemical handling procedures for volatile organic compounds apply. We offer flexible packaging options, including 190 kg drums, to accommodate various logistical requirements and customer needs.