Description

Silsesquioxanes, Me, Hydroxy-Terminated is a specialized organosilicon compound belonging to the polyhedral oligomeric silsesquioxane (POSS) family, characterized by a cage-like structure with methyl groups and reactive hydroxyl termini. This unique architecture provides a powerful hybrid platform, combining the thermal stability of inorganic silica with the processability and compatibility of organic polymers. It is a critical raw material for advanced material scientists and formulators seeking to enhance the performance of coatings, adhesives, and high-performance composites through nanoscale reinforcement and surface modification.

Application

• High-Performance Polymer Modification: Acts as a nanoscale reinforcing agent and crosslinker in epoxy, silicone, polyimide, and other thermoset resins to improve thermal stability, mechanical strength, and reduce shrinkage.
• Advanced Coating Formulations: Used to create highly crosslinked, scratch-resistant, and hydrophobic surface coatings with enhanced adhesion and durability for automotive, aerospace, and industrial applications.
• Adhesive and Sealant Enhancement: Incorporated to boost the thermal and chemical resistance of silicone and organic adhesives and sealants.
• Hybrid Material Synthesis: Serves as a versatile building block (nanobuilding block) for constructing organic-inorganic hybrid materials with tailored properties for optics, electronics, and membranes.
• Surface Functionalization Agent: Utilized to modify the surface properties of nanoparticles, fibers, and fillers to improve dispersion and interfacial bonding within composite matrices.
• Precursor for Further Derivatization: The reactive hydroxyl groups provide sites for further chemical modification with other silanes or organic moieties to create custom POSS derivatives.

Basic Information

Product Name	Silsesquioxanes, Me, Hydroxy-Terminated
CAS No.	68554-71-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Hydroxy-Functionalized Methylsilsesquioxane; Methyl POSS Triol; Octa[(trimethylsiloxy)]silsesquioxane (partial hydrolysis product); Hydrolyzed Methyltrimethoxysilane (cage form); Me-POSS-OH; Polyhedral Oligomeric Methylsilsesquioxanol; T8 Methyl Silsesquioxane, Hydroxy-Terminated; Methyl T8 TriSilanol
EINECS	Contact for details

Quality Control

Our Silsesquioxanes, Me, Hydroxy-Terminated is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including spectroscopic identification and purity assessment, to ensure consistency and performance. While this product is typically supplied as a technical or R&D grade material, specifications can be aligned with customer requirements. A comprehensive Certificate of Analysis (COA) detailing key parameters is provided with every shipment.

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); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect reactivity and properties. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or viscous liquid
Identification (IR)	Conforms to structure
Assay (Si-OH Content)	Contact for details
Volatile Content	< 2.0%
Solubility	Soluble in common organic solvents (e.g., THF, toluene)

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