Description

2,2,4,4,8,8,10,10-Octamethyl-3,9-Dioxa-2,4,8,10-Tetrasila-6-Stannaspiro[5.5]undecane is a specialized organotin siloxane compound, serving as a key intermediate in advanced material synthesis. Its unique spirocyclic structure, integrating tin and silicon centers, provides exceptional thermal stability and reactivity, making it valuable for creating high-performance polymers and coatings. This chemical is primarily sought by R&D and production teams in the electronics, specialty polymer, and organometallic catalyst sectors.

Application

• Precursor for Heat-Resistant Polymers: Acts as a monomer or cross-linking agent in the synthesis of polyorganosiloxanes and polyorganostannoxanes with enhanced thermal properties.
• Electronic Materials: Used in the development of dielectric layers, encapsulation materials, and other components for semiconductor and microelectronic devices.
• Catalyst and Co-Catalyst Systems: Serves as a ligand or component in organometallic catalysts for polymerization and organic synthesis reactions.
• Surface Modification Agent: Imparts specific surface properties to inorganic fillers like silica or glass, improving compatibility in composite materials.
• Adhesive and Sealant Formulations: Incorporated to modify cure profiles and enhance the durability and environmental resistance of high-performance adhesives.
• Research & Development: A valuable building block in academic and industrial research for exploring new organometallic frameworks and hybrid materials.

Basic Information

Product Name	2,2,4,4,8,8,10,10-Octamethyl-3,9-Dioxa-2,4,8,10-Tetrasila-6-Stannaspiro[5.5]undecane
CAS No.	87683-88-3
Molecular Formula	C14H38O2Si4Sn
Molecular Weight	481.44 g/mol
Synonyms	Octamethyl-3,9-dioxa-2,4,8,10-tetrasila-6-stannaspiro[5.5]undecane; 1,1,3,3,5,5,7,7-Octamethyl-2,4,6,8-tetraoxa-1,3,5,7-tetrasila-9-stannaspiro[4.4]nonane (alternative spiro numbering); Tin-containing spirocyclic siloxane; Organotin siloxane spiro compound; Spirocyclic tin siloxane; Stannaspiro siloxane; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of 2,2,4,4,8,8,10,10-Octamethyl-3,9-Dioxa-2,4,8,10-Tetrasila-6-Stannaspiro[5.5]undecane adheres to a strict quality management system. Each batch undergoes comprehensive analytical testing, including NMR (¹H, ¹³C, ²⁹Si, ¹¹⁹Sn), FT-IR, and elemental analysis, to confirm identity and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to ensure traceability and compliance with your research or production requirements.

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 (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (NMR)	Conforms to structure
Identification (IR)	Conforms to structure
Purity (by NMR/HPLC)	≥ 95% (Typical 97-99%)
Tin (Sn) Content	Calculated: 24.66%
Elemental Analysis	Conforms to theoretical values

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