Description

Dicyclohexylphosphinoethyltriethoxysilane is a specialized organosilicon compound featuring a phosphine ligand, designed for advanced surface modification and coupling applications. This bifunctional molecule is critical for creating robust, tailored interfaces between inorganic substrates and organic polymers or coatings. It is essential for manufacturers and R&D teams in the adhesives, sealants, advanced composites, and specialty coatings industries seeking to enhance material performance and durability.

Application

• Adhesive & Sealant Formulation: Acts as a high-performance coupling agent to improve the bond strength and moisture resistance between mineral fillers (e.g., silica, glass) and organic polymer matrices.
• Fiber-Reinforced Composites: Used as a sizing or surface treatment for glass, carbon, or aramid fibers to enhance interfacial adhesion with epoxy, polyester, or other resin systems, leading to superior mechanical properties.
• Mineral-Filled Plastics & Elastomers: Improves the dispersion and compatibility of inorganic fillers in polyolefins, engineering plastics, and silicone rubber, reducing viscosity and increasing composite strength.
• Specialty Coatings & Inks: Functions as an adhesion promoter for coatings on difficult substrates like metals, glass, and plastics, ensuring excellent durability and chemical resistance.
• Catalyst Support & Immobilization: The phosphine moiety allows for the grafting and stabilization of transition metal catalysts onto silica or other oxide supports for heterogeneous catalysis.
• Surface Modification of Nanoparticles: Enables the functionalization of silica, metal oxide, or quantum dot surfaces to tailor their properties for specific electronic, optical, or biomedical applications.

Basic Information

Product Name	Dicyclohexylphosphinoethyltriethoxysilane
CAS No.	55289-47-9
Molecular Formula	C₂₂H₄₇O₃PSi
Molecular Weight	442.68 g/mol
Synonyms	(2-(Dicyclohexylphosphino)ethyl)triethoxysilane; Triethoxy(2-(dicyclohexylphosphino)ethyl)silane; Dicyclohexyl(2-triethoxysilylethyl)phosphine; DCPES; Phosphine-functional silane; Silane coupling agent, phosphino type
EINECS	Contact for details

Quality Control

Our Dicyclohexylphosphinoethyltriethoxysilane is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including NMR, FT-IR, and GC, to ensure high purity and consistent performance. A detailed Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C/59-77°F) under an inert atmosphere (e.g., nitrogen or argon) due to its sensitivity to moisture and oxidation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.470 - 1.480
Density (g/mL, 25°C)	0.980 - 1.020

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