Description

Ethyltris(Dimethylsiloxy)Silane is a specialized organosilicon compound, a key silane derivative used as a versatile building block and crosslinking agent in advanced material synthesis. Its molecular structure, featuring one ethyl group and three reactive siloxy units, makes it invaluable for modifying surface properties and enhancing the performance of silicone-based polymers. This chemical is essential for manufacturers and R&D laboratories in the silicone elastomer, resin, and specialty coatings industries seeking to improve thermal stability, hydrophobicity, and mechanical strength.

Application

• Silicone Crosslinking Agent: A critical component in the formulation of Room-Temperature-Vulcanizing (RTV) silicone rubbers and High-Temperature-Vulcanizing (HTV) silicone elastomers, providing enhanced mechanical properties and durability.
• Surface Modification Precursor: Used to synthesize functional silanes for surface treatment of fillers (e.g., silica, glass fibers) to improve dispersion and interfacial adhesion in composite materials.
• Intermediate for Specialty Silicones: Serves as a key intermediate in the production of branched and cage-structured siloxanes (POSS - Polyhedral Oligomeric Silsesquioxanes) for high-performance materials.
• Adhesive & Sealant Formulations: Imparts improved adhesion, flexibility, and moisture resistance in advanced silicone-based adhesives and sealants for construction, automotive, and aerospace applications.
• Release Coatings & Molding: Employed in the synthesis of silicone release agents and as a component in mold-making materials due to its excellent release properties and thermal stability.
• Pharmaceutical & Cosmetic Silicones: Acts as a precursor for synthesizing high-purity silicone fluids and elastomers used in topical drug delivery systems and cosmetic formulations.

Basic Information

Product Name	Ethyltris(Dimethylsiloxy)Silane
CAS No.	150320-87-9
Molecular Formula	C8H24O3Si4
Molecular Weight	280.64 g/mol
Synonyms	Ethyltris(dimethylsiloxy)silane; Tris(dimethylsiloxy)ethylsilane; Ethylsilane tris(dimethylsilanolate); Silane, ethyltris(dimethylsiloxy)-; 1-Ethyl-1,1,3,3,3-pentamethyltrisiloxane (related isomer); ETDS; Ethyl TDS; Trisiloxane, 1-ethyl-1,1,3,3,3-pentamethyl-
EINECS	Contact for details

Quality Control

Our Ethyltris(Dimethylsiloxy)Silane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC), Nuclear Magnetic Resonance (NMR), and Karl Fischer titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment. We adhere to relevant industry standards and can support compliance documentation as required.

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 (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent 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%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.390 - 1.400
Density (20°C)	0.88 - 0.92 g/cm³

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