Description

Oktakis(Tetramethylammonium)-T8-Silisesquioxane CAS NO 69667-29-4 is a functionalized polyhedral oligomeric silsesquioxane (POSS) featuring eight tetramethylammonium groups covalently attached to a rigid, cage-like silica core. This unique hybrid organic-inorganic structure matters as a highly effective compatibilizer and property modifier, enabling the creation of advanced nanocomposite materials with enhanced thermal stability and mechanical performance. It is primarily needed by R&D and production teams in the polymer, electronics, and specialty coatings industries seeking to improve material properties at the nanoscale.

Application

• Polymer Nanocomposites: Acts as a nanoscale reinforcing agent and compatibilizer in thermoplastics, thermosets, and elastomers to enhance thermal stability, mechanical strength, and flame retardancy.
• Advanced Coatings and Resins: Used to modify epoxy, acrylic, and silicone-based formulations, improving scratch resistance, adhesion, and thermal properties for protective and electronic coatings.
• Electronics and Encapsulation: Serves as a high-performance additive in underfill materials, molding compounds, and dielectric layers to reduce thermal stress and improve reliability.
• Catalyst and Ligand Support: Provides a well-defined, nanoscale platform for supporting catalytic species or as a building block for constructing porous materials (MOFs, COFs).
• Biomedical Materials: Investigated for use in drug delivery systems and bioactive scaffolds due to its tunable surface chemistry and biocompatibility potential.
• Flame Retardant Additives: Incorporated into polymer matrices to promote char formation and reduce flammability, leveraging its silica-rich structure.

Basic Information

Product Name	Oktakis(Tetramethylammonium)-T8-Silisesquioxane
CAS No.	69667-29-4
Molecular Formula	C32H96N8O12Si8
Molecular Weight	1082.08 g/mol
Synonyms	Octa(tetramethylammonium) POSS; T8-Tetramethylammonium Silsesquioxane; Octakis(tetramethylammonio)octasilsesquioxane; POSS-(N(CH3)4)8; Tetramethylammonium-functionalized POSS; Q8M8(N(CH3)4)8; Ammonium-functionalized Polyhedral Oligomeric Silsesquioxane
EINECS	Contact for details

Quality Control

Our Oktakis(Tetramethylammonium)-T8-Silisesquioxane is manufactured under controlled conditions and undergoes rigorous analytical testing to ensure batch-to-batch consistency and high purity. Quality is verified against established in-house specifications using advanced techniques including NMR, FT-IR, and HPLC. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with each 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); the container must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95%
Loss on Drying	≤ 2.0 %
Residue on Ignition	Contact for details

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