Description

2,2,9,9-Tetramethyl-5-[(Trimethylsilyl)Oxy]-3,8-Dioxa-2,9-Disiladecane is a specialized organosilicon compound featuring a unique disiloxane and ether-linked structure. This chemical matters as a versatile silylating agent and protective group intermediate, offering precise control in complex synthetic pathways. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors for synthesizing high-value, silicon-containing molecules.

Application

• Pharmaceutical Intermediate: Key building block for introducing silyl protecting groups in the synthesis of complex drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of silicon-modified pesticides and herbicides to enhance stability or bioavailability.
• Polymer & Material Science: Serves as a cross-linking agent or modifier in the development of silicone resins, elastomers, and specialty polymers.
• Organic Synthesis Reagent: Employed as a selective silylating agent for alcohols and other functional groups in fine chemical and academic research.
• Surface Modification: Utilized to create hydrophobic or release coatings on glass, metals, and other substrates.
• Electronics & Semiconductor Precursor: Potential use in chemical vapor deposition (CVD) processes for depositing silicon-containing thin films.

Basic Information

Product Name	2,2,9,9-Tetramethyl-5-[(Trimethylsilyl)Oxy]-3,8-Dioxa-2,9-Disiladecane
CAS No.	33581-75-8
Molecular Formula	C13H34O3Si3
Molecular Weight	322.67 g/mol
Synonyms	1,3-Bis(trimethylsiloxy)-1,1,3,3-tetramethyldisiloxane; 1,3-Bis(trimethylsilyloxy)-1,1,3,3-tetramethyldisiloxane; Bis(trimethylsiloxy)tetramethyldisiloxane; 1,1,3,3-Tetramethyl-1,3-bis(trimethylsiloxy)disiloxane; Tetramethylbis(trimethylsiloxy)disiloxane; Disiloxane, 1,1,3,3-tetramethyl-1,3-bis[(trimethylsilyl)oxy]-; TMS-protected disiloxane diol
EINECS	Contact for details

Quality Control

Our 2,2,9,9-Tetramethyl-5-[(Trimethylsilyl)Oxy]-3,8-Dioxa-2,9-Disiladecane is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment and are available upon request.

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 nature, the container must be kept tightly sealed to exclude moisture. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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