Description

Silsesquioxanes, Me, Ethoxy-Terminated CAS NO 104780-78-1 is a specialized organosilicon compound belonging to the polyhedral oligomeric silsesquioxane (POSS) family, characterized by a hybrid inorganic-organic cage-like structure terminated with methoxy and ethoxy groups. This unique architecture provides exceptional value as a versatile nanoscale building block for creating advanced hybrid materials with enhanced thermal stability, mechanical strength, and tailored surface properties. It is critically needed by R&D and production teams in the advanced materials, specialty coatings, and electronics sectors seeking to develop high-performance nanocomposites, low-k dielectrics, and surface modification agents.

Application

• Advanced Polymer Nanocomposites: Acts as a reinforcing nanofiller to enhance thermal stability, mechanical strength, and modulus of engineering plastics, epoxies, and silicones.
• Specialty Coatings and Resins: Used to formulate high-performance, abrasion-resistant, and thermally stable coatings for automotive, aerospace, and industrial applications.
• Electronics and Semiconductor Materials: Serves as a precursor for low-dielectric constant (low-k) materials in microelectronic insulation layers and as a surface passivation agent.
• Adhesives and Sealants: Improves the thermal and chemical resistance properties of high-temperature adhesives and sealants.
• Hybrid Material Synthesis: Functions as a core scaffold or cross-linking agent for synthesizing novel organic-inorganic hybrid (OIH) materials with precise functionality.
• Surface Modification: Used to modify the surface properties of nanoparticles, fillers, or substrates to improve dispersion and interfacial adhesion in composite systems.

Basic Information

Item	Details
Product Name	Silsesquioxanes, Me, Ethoxy-Terminated
CAS No.	104780-78-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Methoxy-Ethoxy POSS; Ethoxy-Terminated Methylsilsesquioxane; Polyhedral Oligomeric Silsesquioxane with Methoxy and Ethoxy Groups; POSS Cage Mixture, Me, Ethoxy; Octa(Methylethoxysilsesquioxane); Inorganic-Organic Hybrid Siloxane; Nanostructured Chemicals; Silsesquioxane Resin Precursor
EINECS	Contact for details

Quality Control

Our Silsesquioxanes, Me, Ethoxy-Terminated is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency and performance. Certificates of Analysis (COA) documenting key parameters such as composition, functional group content, and purity are provided and 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 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 premature hydrolysis or condensation reactions.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Complies
Assay (POSS Content)	Contact for details
Methoxy & Ethoxy Content	Contact for details
Volatile Matter	≤ 2.0%
Solubility	Soluble in common organic solvents

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