Description

1-Allyl-3,5,7,9,11,13,15-Heptaisobutylpentacyclo[9.5.1.1³,⁹.1⁵,¹⁵.1⁷,¹³]octasiloxane is a precisely engineered, high-purity organosilicon compound belonging to the polyhedral oligomeric silsesquioxane (POSS®) family. This advanced material matters for its unique hybrid molecular architecture, which combines an inorganic silica-like cage core with organic isobutyl and allyl substituents, offering exceptional thermal stability and compatibility with organic polymers. It is primarily needed by R&D scientists and formulators in the advanced materials sector for developing high-performance nanocomposites, specialty resins, and tailored surface coatings.

Application

• Advanced Polymer Nanocomposites: Acts as a molecular-level reinforcing agent to enhance thermal stability, mechanical strength, and flame retardancy of engineering plastics, epoxies, and silicones.
• Specialty Resin Modification: Used to modify the properties of thermosetting and thermoplastic resins, improving their processability and end-performance for aerospace and automotive applications.
• High-Performance Coatings: Incorporated into coating formulations to increase scratch resistance, hydrophobicity, and UV stability while maintaining optical clarity.
• Precursor for Functional Materials: The reactive allyl group serves as a handle for further chemical modification via hydrosilylation or thiol-ene reactions, enabling the creation of custom POSS derivatives.
• Electronics and Semiconductor Materials: Utilized in low-dielectric constant (low-k) materials, encapsulants, and photoresists due to its inorganic-organic nature and precise structure.
• Additive for Lubricants and Elastomers: Improves thermal-oxidative stability and reduces friction in high-performance lubricants and specialty silicone elastomers.

Basic Information

Product Name	1-Allyl-3,5,7,9,11,13,15-Heptaisobutylpentacyclo[9.5.1.1³,⁹.1⁵,¹⁵.1⁷,¹³]octasiloxane
CAS No.	351003-00-4
Molecular Formula	C₃₅H₇₄O₁₂Si₈
Molecular Weight	1000.66 g/mol
Synonyms	Allylheptaisobutyl-POSS; Heptaisobutyl(allyl)silsesquioxane; Allyl-POSS Cage Mixture; POSS® MA0735 (Trade Name Variant); Octakis(1,1-dimethylethyl) 2-propen-1-ylsilyloxy]silsesquioxane; T8-Allylheptaisobutyl; Polyhedral Oligomeric Silsesquioxane with Allyl and Isobutyl Groups; Inorganic-Organic Hybrid Nanomaterial
EINECS	Contact for details

Quality Control

Our production of 1-Allyl-3,5,7,9,11,13,15-Heptaisobutyl-POSS adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for research and industrial applications. Each lot is characterized using advanced analytical techniques including NMR, HPLC, and FT-IR to confirm molecular structure and composition. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). The product is moisture-sensitive; keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or waxy solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (T8 Cage)
Loss on Drying	≤ 0.5%
Residue on Ignition	Contact for details
Heavy Metals	< 10 ppm

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