Description

2,2,5,5-Tetramethyl-2,5-Disila-1-Oxacyclopentane is a specialized organosilicon compound featuring a unique cyclic siloxane structure. This chemical is valued for its role as a versatile building block and intermediate in advanced material synthesis, offering distinct reactivity due to its silicon-oxygen-silicon backbone. It is primarily sought by R&D laboratories and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for developing novel silicone-based products and functional materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly those requiring silicon incorporation for enhanced properties.
• Agrochemical Synthesis: Serves as a key precursor in the development of new-generation pesticides and herbicides with improved stability and efficacy.
• Specialty Polymer & Resin Production: Acts as a monomer or cross-linking agent for creating high-performance silicone resins, coatings, and elastomers with tailored thermal and mechanical properties.
• Surface Modification & Coupling Agent: Utilized to functionalize inorganic surfaces (e.g., silica, glass) to improve adhesion and compatibility in composite materials.
• Material Science R&D: Employed in academic and industrial research for developing new organosilicon compounds, catalysts, and advanced hybrid materials.
• Electronics & Semiconductor Precursor: Investigated as a potential precursor for silicon-containing thin films or dielectric materials in microelectronics fabrication.

Basic Information

Product Name	2,2,5,5-Tetramethyl-2,5-Disila-1-Oxacyclopentane
CAS No.	7418-20-4
Molecular Formula	C7H18OSi2
Molecular Weight	174.39 g/mol
Synonyms	1-Oxa-2,5-disilacyclopentane, 2,2,5,5-tetramethyl-; 2,2,5,5-Tetramethyl-1-oxa-2,5-disilacyclopentane; Tetramethyldisiloxanylene; Cyclic dimethylsiloxane dimer; 1,1,3,3-Tetramethyl-1,3-disiloxacyclobutane (common misnomer); TMDSO (abbreviation); Dimeric hexamethyldisiloxane
EINECS	Contact for details

Quality Control

Our 2,2,5,5-Tetramethyl-2,5-Disila-1-Oxacyclopentane is produced under stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the exacting standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

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). This compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%

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