Description

7-Oxa-3-Silabicyclo[4.1.0]Heptane (9Ci) is a specialized organosilicon compound featuring a unique bicyclic structure that incorporates both oxygen and silicon atoms. This heterocyclic silane is a valuable synthetic intermediate and functional material, prized for its ability to introduce siloxane linkages and modify surface properties. It is primarily utilized by researchers and manufacturers in the advanced materials, electronics, and pharmaceutical sectors for applications ranging from surface modification to polymer synthesis.

Application

• Surface Modification Agent: Used to functionalize inorganic surfaces (e.g., silica, glass, metals) to improve adhesion, hydrophobicity, or biocompatibility.
• Crosslinking Agent for Polymers: Serves as a reactive monomer or crosslinker in silicone and hybrid organic-inorganic polymer systems to enhance thermal and mechanical properties.
• Adhesion Promoter: Incorporated into coatings, sealants, and adhesive formulations to improve bonding to difficult substrates.
• Pharmaceutical Intermediate: Employed in the synthesis of novel drug candidates and bioactive molecules that incorporate silicon-based pharmacophores.
• Precursor for Silicone Resins: Acts as a building block in the production of high-performance silicone resins and elastomers with tailored properties.
• Electronics and Semiconductor Industry: Used in the fabrication of low-k dielectric materials, protective coatings, and as a precursor in chemical vapor deposition (CVD) processes.

Basic Information

Product Name	7-Oxa-3-Silabicyclo[4.1.0]Heptane (9Ci)
CAS No.	188178-33-8
Molecular Formula	C5H10OSi
Molecular Weight	114.22 g/mol
Synonyms	1-Oxa-5-silaspiro[4.4]nonane; 1-Oxa-5-silaspiro[4.4]nonane (alternative numbering); 3-Oxatricyclo[3.2.1.0²,⁴]octane, 1-sila-; 7-Oxabicyclo[4.1.0]heptane, 3-sila-; 3-Sila-7-oxabicyclo[4.1.0]heptane; Hexamethylcyclotrisiloxane derivative (related class); Spirosiloxane
EINECS	Contact for details

Quality Control

Our 7-Oxa-3-Silabicyclo[4.1.0]Heptane (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopy (NMR, IR), to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are available upon request 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 place. Due to its hygroscopic nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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