Description

Octakis(Trimethylsiloxy)Silsesquioxane is a highly functionalized polyhedral oligomeric silsesquioxane (POSS) derivative, serving as a precise nanoscale building block for advanced hybrid materials. This compound is valued for its ability to dramatically enhance thermal stability, mechanical strength, and surface properties when incorporated into polymers, resins, and coatings. It is essential for R&D and production teams in the specialty chemicals, high-performance plastics, and electronics industries seeking to create next-generation composite materials.

Application

• High-Performance Polymer Modification: Acts as a reinforcing nanofiller to improve the thermal stability, modulus, and flame retardancy of engineering plastics like polycarbonates, epoxies, and silicones.
• Advanced Composite Materials: Used as a precursor or additive in ceramic and hybrid composites for aerospace and automotive components requiring lightweight, high-strength materials.
• Specialty Coatings and Films: Imparts superior scratch resistance, hydrophobicity, and dielectric properties to protective coatings, optical films, and release layers.
• Electronics and Semiconductor Materials: Employed in low-dielectric constant (low-k) films, passivation layers, and as a component in photoresists for microelectronics fabrication.
• Adhesives and Sealants: Enhances the thermal and chemical resistance of high-temperature silicone and other specialty adhesives.
• Catalyst and Ligand Support: Provides a well-defined, nanosized silica-like platform for immobilizing catalysts or creating novel catalytic systems.
• Personal Care and Cosmetics: Used in formulations to improve texture, provide a silky feel, and enhance the durability of products like sunscreens and makeup.
• Life Science Research: Serves as a core structure for developing drug delivery carriers, imaging agents, and bioactive hybrid materials.

Basic Information

Product Name	Octakis(Trimethylsiloxy)Silsesquioxane
CAS No.	51777-38-9
Molecular Formula	C24H72O12Si8
Molecular Weight	793.66 g/mol
Synonyms	Octa(trimethylsiloxy)silsesquioxane; Octakis(trimethylsiloxy)T8-silsesquioxane; T8-POSS-(OSiMe3)8; POSS Cage Mixture, T8; Polyhedral Oligomeric Silsesquioxane, Octa(trimethylsiloxy) Derivative; Silsesquioxanes, octakis(trimethylsiloxy)-; Cubic Siloxane; Q8M8
EINECS	Contact for details

Quality Control

Our Octakis(Trimethylsiloxy)Silsesquioxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including NMR, FT-IR, and HPLC, to ensure high purity and consistent cage structure integrity. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment 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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (T8 Cage)
Loss on Drying	≤ 1.0 %
Residue on Ignition	Contact for details
Heavy Metals	< 10 ppm

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