Description

3,8,10-Trioxa-9-Silatetradecan-14-Oic Acid, 9-(4-Ethoxy-4-Oxo-1-Phenyl Butoxy)-4-Oxo-7,9,11-Triphenyl-, Ethyl Ester is a highly functionalized organosilicon carboxylic acid derivative featuring multiple ether linkages, a sila-heterocyclic core, and extended aromatic substitution. This structural complexity confers exceptional surface-modifying capability, thermal stability, and selective reactivity—making it a strategic intermediate for advanced specialty polymers and hybrid organic-inorganic materials. It is primarily utilized by R&D laboratories and industrial formulators in high-performance coatings, silicone-modified resins, and next-generation adhesion promoters for demanding aerospace and electronics applications.

Application

• Surface modification agent for silica-based fillers in high-durability automotive clearcoats
• Co-monomer in the synthesis of siloxane-acrylate hybrid resins for UV-curable industrial coatings
• Adhesion promoter for epoxy-silicone bonding systems used in LED encapsulation and power module assembly
• Functional linker in the preparation of phenyl-rich organosilica mesoporous materials for catalytic supports
• Stabilizing ligand for palladium–silicon hybrid nanocatalysts in cross-coupling reactions
• Building block for stimuli-responsive silicone gels with tunable rheology in medical device lubricants

Basic Information

Product Name	3,8,10-Trioxa-9-Silatetradecan-14-Oic Acid, 9-(4-Ethoxy-4-Oxo-1-Phenyl Butoxy)-4-Oxo-7,9,11-Triphenyl-, Ethyl Ester
CAS No.	85905-71-1
Molecular Formula	C39H40O9Si
Molecular Weight	696.82 g/mol
Synonyms	9-(4-Ethoxy-4-oxo-1-phenylbutoxy)-3,8,10-trioxa-9-silatetradecan-14-oic acid ethyl ester; Ethyl 3,8,10-trioxa-9-silatetradecan-14-oate substituted with 4-ethoxy-4-oxo-1-phenylbutoxy and triphenyl groups; Sila-bridged triaryl ether carboxylate ester; Organosilicon polyether carboxylate; Triphenyl-substituted silaether ethyl ester; CAS 85905-71-1 reference compound; Silester-TPBEOE (proprietary code)
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches are verified for identity (FT-IR, NMR), purity (HPLC ≥98.5%), residual solvents (GC), heavy metals (ICP-MS ≤10 ppm), and moisture content (Karl Fischer ≤0.15%). Manufacturing adheres to ISO 9001:2015 and follows GMP-aligned practices for fine chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store at 15–25°C in a dry, well-ventilated area. Due to its hygroscopic nature, minimize exposure to ambient humidity; use desiccant-equipped secondary packaging during long-term storage. Avoid contact with strong acids, organic solvents, or fluoride/strong alkali solutions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or waxy solid
Identity (IR)	Conforms to reference spectrum
Assay (HPLC)	≥98.5%
Melting Point	78–82°C
Loss on Drying	≤0.25%
Residue on Ignition	≤0.1%
Heavy Metals (as Pb)	≤10 ppm
Water Content (KF)	≤0.15%

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