Description

Trisilanolphenyl Poss CAS NO 444315-26-8 is a functionalized polyhedral oligomeric silsesquioxane (POSS) derivative featuring three reactive silanol groups attached to a phenyl-substituted inorganic silica-like core. This unique hybrid structure matters because it enables the precise modification of polymers and materials, enhancing thermal stability, mechanical strength, and surface properties. It is primarily needed by R&D scientists and material formulators in the advanced composites, specialty coatings, and high-performance elastomers industries seeking to create innovative hybrid organic-inorganic materials.

Application

• As a reactive nanofiller and compatibilizer in epoxy, silicone, and polyimide resin systems for advanced composites.
• As a surface modification agent to improve the thermal and oxidative stability of polymers and coatings.
• As a key precursor for synthesizing novel POSS-based monomers and polymers with tailored architectures.
• In the formulation of high-temperature resistant and low-dielectric constant materials for electronics and aerospace applications.
• As an additive to enhance the mechanical properties, such as modulus and hardness, of elastomers and thermoplastics.
• For research and development of novel hybrid materials in academic and industrial laboratories.

Basic Information

Product Name	Trisilanolphenyl Poss
CAS No.	444315-26-8
Molecular Formula	C42H38O12Si7
Molecular Weight	931.43 g/mol
Synonyms	Trisilanol Phenyl POSS; Phenyltrisilanol POSS; 1,3,5,7,9,11,14-Heptaethyltricyclo[7.3.3.15,11]heptasiloxane-3,5,7-triol, 1,3,5,7,9,11,14-heptaphenyl-; Heptaphenyl Trisilanol POSS; POSS Cage Trisilanol; Phenyl T7-Trisilanol; Hybrid Silica Nanoparticle
EINECS	Contact for details

Quality Control

Our Trisilanolphenyl POSS is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including NMR, FT-IR, and HPLC, to ensure high purity and consistent chemical structure. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are 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 place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and potential condensation reactions.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Silanol Content	≥ 3.0 mmol/g
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.