Description

1,3,3,5,7,7,10,10-Octamethyl-1,3,5,7,10-Pentasila-2,4,6,8,9,11-Hexaoxabicyclo[3.3.3]Undecane is a high-purity organosilicon compound with a complex, cage-like molecular structure. This compound is valued for its role as a versatile chemical intermediate and functional additive in advanced material synthesis. It is primarily sought by manufacturers in the silicone polymers, specialty resins, and electronics industries for applications requiring precise molecular architecture and thermal stability.

Application

• Silicone Resin & Polymer Modification: Acts as a cross-linking agent or a functional monomer to enhance the thermal stability, mechanical properties, and weather resistance of high-performance silicone resins.
• Electronic Encapsulants & Potting Compounds: Used in formulations for protecting sensitive electronic components, offering excellent dielectric properties and low stress.
• Release Coatings & Molding Agents: Serves as a key ingredient in non-stick coatings for industrial molds and pressure-sensitive adhesive release liners.
• Specialty Adhesives & Sealants: Imparts improved adhesion, flexibility, and environmental resistance to high-end adhesive and sealant formulations.
• Optical & LED Packaging Materials: Utilized in transparent encapsulating materials for LEDs and optical devices due to its potential for high clarity and thermal/UV stability.
• Pharmaceutical & Cosmetic Intermediates: Functions as a sophisticated synthetic building block for creating novel organosilicon molecules with specific biological or surface-active properties.

Basic Information

Product Name	1,3,3,5,7,7,10,10-Octamethyl-1,3,5,7,10-Pentasila-2,4,6,8,9,11-Hexaoxabicyclo[3.3.3]Undecane
CAS No.	51717-82-9
Molecular Formula	C16H48O6Si5
Molecular Weight	513.0 g/mol
Synonyms	Octamethylpentasila-2,4,6,8,9,11-hexaoxabicyclo[3.3.3]undecane; 2,4,6,8,9,11-Hexaoxa-1,3,5,7,10-pentasilabicyclo[3.3.3]undecane, 1,3,3,5,7,7,10,10-octamethyl-; Dodecamethylspiro[5.5]pentasiloxane (common structural name); Cage Siloxane; Polymethylsilsesquioxane precursor; POSS derivative (Polyhedral Oligomeric Silsesquioxane).
EINECS	Contact for details

Quality Control

Our production of 1,3,3,5,7,7,10,10-Octamethyl-1,3,5,7,10-Pentasila-2,4,6,8,9,11-Hexaoxabicyclo[3.3.3]Undecane adheres to a rigorous quality management system. Every batch is analyzed using advanced techniques including GC, HPLC, and NMR to ensure high purity and consistent composition. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance with your technical 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). Keep away from strong acids, bases, and oxidizing agents. The container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (GC/HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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