Description

2-(Diphenylphosphino)Ethyltriethoxysilane is a high-value organosilicon compound featuring a dual-functionality phosphine and alkoxysilane group. This unique structure makes it an exceptionally effective coupling agent and ligand, bridging inorganic materials and organic polymers or metal complexes. It is essential for manufacturers and R&D teams in the advanced materials and specialty chemicals sectors seeking to enhance adhesion, dispersion, and catalytic performance. Key applications include its use as a surface modifier for fillers, a component in adhesion promoters, and a precursor for sophisticated hybrid materials.

Application

• Surface Modification Agent: Used to functionalize silica, glass, and other mineral fillers to improve their compatibility and dispersion in polymer matrices like rubbers, epoxies, and plastics.
• Adhesion Promoter: Enhances the bond strength between organic coatings, sealants, or adhesives and inorganic substrates such as metals, glass, and minerals.
• Catalyst Ligand Precursor: Serves as a versatile ligand or ligand precursor in transition metal catalysis for various organic synthesis reactions, including cross-coupling and hydrosilylation.
• Hybrid Material Synthesis: A key building block in sol-gel chemistry for creating advanced organic-inorganic hybrid materials with tailored properties for optics, electronics, and coatings.
• Rubber & Tire Industry: Improves the reinforcement of silica-filled rubber compounds, leading to better rolling resistance, wear, and wet grip in tire formulations.
• Fiber Treatment: Applied to glass or carbon fibers to improve interfacial adhesion and mechanical properties in composite materials.

Basic Information

Product Name	2-(Diphenylphosphino)Ethyltriethoxysilane
CAS No.	18586-39-5
Molecular Formula	C20H29O3PSi
Molecular Weight	376.50 g/mol
Synonyms	Triethoxy[2-(diphenylphosphino)ethyl]silane; (2-(Diphenylphosphino)ethyl)triethoxysilane; Diphenylphosphinoethyltriethoxysilane; Silane, triethoxy[2-(diphenylphosphino)ethyl]-; 3-(Diphenylphosphino)propyltriethoxysilane analog; P,P-Diphenyl-P'-(triethoxysilylethyl)phosphine; Ligand precursor SiP2
EINECS	Contact for details

Quality Control

Our production of 2-(Diphenylphosphino)Ethyltriethoxysilane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, NMR, and FTIR to confirm identity and assay. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment. We are committed to meeting the precise requirements of our global partners in research and industrial manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C to maximize shelf life and maintain stability. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Refractive Index (n20D)	1.520 - 1.530
Density (20°C)	1.05 - 1.10 g/mL

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