Description

Spiro[6-Oxa-3-Silabicyclo[3.1.0]Hexane-3,2-[1]Oxa[2]Silacyclobutane] (9Ci) is a specialized organosilicon compound featuring a unique spirocyclic structure, which imparts significant reactivity and utility in advanced material synthesis. This compound, identified by CAS NO 173269-71-1, serves as a high-value precursor and building block for creating novel polymers and functional materials. It is primarily sought after by R&D chemists and material scientists in the pharmaceutical, electronics, and specialty polymer industries for developing next-generation products.

Application

• Advanced Polymer Synthesis: Acts as a key monomer or cross-linking agent for creating novel polysiloxanes and hybrid organic-inorganic polymers with tailored thermal and mechanical properties.
• Pharmaceutical Intermediates: Utilized in the research and development of active pharmaceutical ingredients (APIs) and drug delivery systems that incorporate silicon.
• Electronic Materials: Serves as a precursor for silicon-containing dielectric layers, encapsulation materials, or other components in semiconductor and microelectronic fabrication.
• Surface Modification & Coatings: Used to modify surface properties (e.g., hydrophobicity, adhesion) of glass, metals, and plastics for specialized industrial coatings.
• Adhesives and Sealants: Imparts specific curing characteristics and performance enhancements in high-performance silicone-based formulations.
• Catalysis and Ligand Design: Employed as a ligand or framework in the development of novel organometallic catalysts for organic synthesis.

Basic Information

Product Name	Spiro[6-Oxa-3-Silabicyclo[3.1.0]Hexane-3,2-[1]Oxa[2]Silacyclobutane] (9Ci)
CAS No.	173269-71-1
Molecular Formula	C5H8O2Si2
Molecular Weight	156.29 g/mol
Synonyms	2,2,5,5-Tetramethyl-1-oxa-2,5-disilacyclopentane; 1-Oxa-2,5-disilacyclopentane, 2,2,5,5-tetramethyl-; Spiro[6-Oxa-3-Silabicyclo[3.1.0]Hexane-3,2'-[1,3,2]Dioxasilole]; Tetramethyl-1-oxa-2,5-disilacyclopentane; 2,2,5,5-Tetramethyl-1-oxa-2,5-disila-cyclopentane; Oxadisilacyclopentane derivative; Spirocyclic oxasilane
EINECS	Contact for details

Quality Control

Our Spiro[6-Oxa-3-Silabicyclo[3.1.0]Hexane-3,2-[1]Oxa[2]Silacyclobutane] (9Ci) is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatographic and spectroscopic methods, to confirm identity and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~0.95 g/mL
Refractive Index (n20D)	~1.420

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