Description

Poly(Octylsilsesquioxane), Ethoxy Terminated is a specialized organosilicon compound belonging to the silsesquioxane family, characterized by a cage-like inorganic silica core with organic octyl and ethoxy terminal groups. This unique hybrid structure provides exceptional compatibility with organic polymers and resins, enhancing material properties. It is a critical performance additive for formulators in the coatings, adhesives, and advanced materials sectors seeking to improve hydrophobicity, thermal stability, and surface modification.

Application

• Surface Modification Agent: Imparts hydrophobic and oleophobic properties to coatings, films, and textiles.
• Polymer Additive: Enhances thermal stability, mechanical strength, and compatibility in epoxy, silicone, and acrylic resin systems.
• Adhesive & Sealant Formulation: Used to modify rheology, improve adhesion to low-energy surfaces, and reduce moisture sensitivity.
• Advanced Composite Materials: Acts as a nanoscale reinforcing filler and coupling agent in polymer composites.
• Release Coatings: Employed in the formulation of non-stick and easy-release coatings.
• Electronic Encapsulants: Improves the moisture resistance and dielectric properties of protective potting compounds.

Basic Information

Product Name	Poly(Octylsilsesquioxane), Ethoxy Terminated
CAS No.	1385031-14-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Octyl POSS, Ethoxy Terminated; Ethoxy-Functionalized Octylsilsesquioxane; Polyhedral Oligomeric Octylsilsesquioxane, Ethoxy Capped; Octyl-T8 Silsesquioxane, Ethoxy Terminated; Octyl-POSS-Ethoxy; POSSOE; Hybrid Octyl Silica
EINECS	Contact for details

Quality Control

Our Poly(Octylsilsesquioxane), Ethoxy Terminated is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, functionality, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, degree of functionalization, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. This material is hygroscopic (moisture-sensitive). For long-term storage, consider using an inert atmosphere or desiccant to maintain product integrity. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (NMR)	≥ 95%
Ethoxy Content	Contact for details
Octyl Content	Contact for details
Volatile Matter	≤ 2.0%

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