Description

Bis(Trimethylsiloxy)Ethylsilane is a versatile organosilicon compound characterized by its unique siloxy and ethylsilane functional groups. This chemical is valued for its role as a key intermediate and functionalizing agent in advanced material synthesis, offering reactivity that enables precise molecular modifications. It is primarily sought by manufacturers in the silicone polymer, pharmaceutical, and specialty chemical industries for applications requiring surface modification, cross-linking, or the introduction of specific organic functionalities.

Application

• Silicone Resin & Polymer Modification: Acts as a cross-linking agent or chain terminator to tailor the properties of silicone elastomers and resins.
• Surface Treatment & Coupling Agent: Used to modify inorganic surfaces like silica or glass, improving hydrophobicity and adhesion in composite materials.
• Pharmaceutical Intermediate: Serves as a protected synthon or silylating agent in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Adhesive & Sealant Formulations: Imparts specific curing characteristics and enhances the performance of high-performance silicone-based adhesives and sealants.
• Specialty Coating Additive: Incorporated into coatings to improve water repellency, chemical resistance, and surface smoothness.
• Laboratory Reagent: Utilized in research and development for organic synthesis, particularly in reactions requiring selective silyl protection.

Basic Information

Product Name	Bis(Trimethylsiloxy)Ethylsilane
CAS No.	7543-58-0
Molecular Formula	C8H24O2Si3
Molecular Weight	236.53 g/mol
Synonyms	Ethylbis(trimethylsiloxy)silane; 1,1,1,3,3,3-Hexamethyl-2-ethyltrisiloxane; Ethyltris(trimethylsiloxy)silane (common misnomer); Ethylsilane, bis(trimethylsiloxy)-; Trisiloxane, 2-ethyl-1,1,1,3,3,3-hexamethyl-; NSC 163083; Ethyltris[(trimethylsilyl)oxy]silane
EINECS	231-420-8

Quality Control

Our production of Bis(Trimethylsiloxy)Ethylsilane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, NMR, and Karl Fischer titration to verify identity, potency, and critical impurity profiles. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 product loss.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.390 - 1.395
Density (20°C)	0.85 - 0.87 g/mL

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