Description

Ethyltris(1-methylethoxy)silane is a versatile organosilicon compound, specifically a trialkoxysilane, widely used as a key coupling agent and surface modifier. Its primary value lies in its ability to form strong, durable bonds between inorganic substrates and organic polymers, significantly enhancing composite material performance. This product is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of advanced composites and mineral-filled plastics.

Application

• Coupling Agent for Mineral-Filled Composites: Enhances the dispersion and interfacial adhesion of fillers (e.g., silica, clay) in polymer matrices like polyethylene, polypropylene, and engineering plastics, improving mechanical strength and moisture resistance.
• Surface Priming and Adhesion Promotion: Used as a primer or additive in coatings, inks, and adhesives to improve adhesion to difficult substrates such as glass, metals, and minerals.
• Moisture-Crosslinking Agent: Serves as a crosslinker in moisture-curable polymer systems, such as silicone sealants and RTV (Room Temperature Vulcanizing) rubbers, where it contributes to cure-through-depth and final elastomeric properties.
• Silicone Intermediate: Acts as a precursor in the synthesis of more complex silicone resins, fluids, and modified silanes for specialized applications.
• Fiberglass and Reinforcing Fiber Treatment: Applied as a sizing or finishing agent on glass fibers and other reinforcing materials to improve compatibility and bond strength with resin systems in composite manufacturing.
• Water Repellency and Surface Modification: Imparts hydrophobic properties to surfaces of construction materials, stone, and textiles, providing protection against water ingress and weathering.

Basic Information

Product Name	Ethyltris(1-methylethoxy)silane
CAS No.	18044-47-8
Molecular Formula	C11H26O3Si
Molecular Weight	234.41 g/mol
Synonyms	Ethyltriisopropoxysilane; Triisopropoxy(ethyl)silane; Ethylsilane triisopropoxide; Ethyltriisopropoxy silane; ETIPS; Ethyltris(2-propoxy)silane; Silane, ethyltris(1-methylethoxy)-; Ethyl triisopropyloxysilane
EINECS	Contact for details

Quality Control

Our production of Ethyltris(1-methylethoxy)silane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Key parameters monitored include assay (by GC), identity (by FT-IR), and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with each shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.90 - 0.92 g/mL
Refractive Index (n20D)	1.390 - 1.400
Water Content (KF)	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.