Description

Pss-Octa((3-Hydroxypropyl)Dimethylsilox& CAS NO 288290-32-4 is a functionalized polyhedral oligomeric silsesquioxane (POSS®) derivative, a hybrid inorganic-organic nanostructured material. This compound is valued for its ability to dramatically enhance the thermal, mechanical, and chemical resistance properties of polymer matrices at low loadings. It is primarily sought by R&D and production teams in the advanced materials, specialty coatings, and high-performance elastomers sectors seeking to create nanocomposites with superior performance characteristics.

Application

• Advanced Polymer Nanocomposites: Acts as a reinforcing nanofiller in epoxy, silicone, polyurethane, and acrylic systems to improve modulus, thermal stability, and reduce flammability.
• Specialty Coatings and Adhesives: Imparts enhanced scratch resistance, weatherability, and barrier properties in protective and decorative coatings, as well as high-strength adhesives.
• High-Performance Elastomers: Used to modify silicone and other rubbers to achieve better tensile strength, heat resistance, and compression set.
• Electronics and Optoelectronics: Serves as a precursor for low-k dielectric materials, encapsulants, and components in LED packaging due to its excellent thermal and dimensional stability.
• Biomedical Materials: The hydroxypropyl functionality allows for further chemical modification, making it suitable for developing biocompatible surfaces, drug delivery carriers, and dental materials.
• Additive Manufacturing (3D Printing): Incorporated into photopolymer resins to enhance the mechanical properties and thermal deflection temperature of printed parts.

Basic Information

Product Name	Pss-Octa((3-Hydroxypropyl)Dimethylsilox& CAS NO 288290-32-4
CAS No.	288290-32-4
Molecular Formula	C40H96O20Si8
Molecular Weight	1137.9 g/mol
Synonyms	Octakis(3-hydroxypropyldimethylsiloxy)octasilsesquioxane; Octa(3-hydroxypropyldimethylsiloxy) POSS; POSS® Octa(3-hydroxypropyl dimethylsiloxy) derivative; Hydroxypropyl POSS; POSS Triol; Cage Siloxane with Hydroxypropyl Groups; Hybrid Inorganic-Organic Nanomaterial; T8-(3-Hydroxypropyl Dimethyl Siloxy)8
EINECS	Contact for details

Quality Control

Our Pss-Octa((3-Hydroxypropyl)Dimethylsilox& is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including NMR, FT-IR, and HPLC, to confirm chemical structure, purity, and consistency. Certificates of Analysis (COA) detailing all critical specifications are provided with every shipment to ensure traceability and compliance with your material 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). This material is hygroscopic (moisture-sensitive). To prevent moisture uptake and potential hydrolysis, containers must be kept tightly sealed when not in use and consideration should be given to storage under an inert atmosphere for long-term preservation.

Specification

Item	Specification
Appearance	White to off-white powder or viscous liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Hydroxyl Value	Contact for details
Residual Solvent (GC)	< 0.5%
Water Content (KF)	< 1.0%

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