Description

Diethyl n-[3-(Triethoxysilyl)Propyl]-L-Aspartate is a specialized organosilane coupling agent that combines a reactive triethoxysilyl group with a chiral L-aspartate ester moiety. This unique structure makes it a critical component for modifying surfaces and polymers, enhancing adhesion, compatibility, and performance in demanding composite systems. It is essential for manufacturers in the advanced materials, coatings, and specialty chemical sectors seeking to improve the interfacial properties between organic and inorganic phases.

Application

• Silane Coupling Agent for Composites: Improves the bond strength and moisture resistance between inorganic fillers (like glass, minerals) and organic polymer matrices in fiberglass-reinforced plastics, tires, and engineering plastics.
• Surface Modification of Nanoparticles: Used to functionalize silica, metal oxide, and other nanoparticles to prevent agglomeration and promote dispersion in polymer and coating formulations.
• Adhesion Promoter in Coatings & Sealants: Enhances the adhesion of paints, inks, and sealants to difficult substrates such as glass, metals, and treated plastics, especially in humid environments.
• Chiral Intermediate in Pharmaceutical Synthesis: Serves as a building block for the synthesis of more complex chiral molecules due to its protected L-aspartate functionality.
• Crosslinking Agent for Silicone Polymers: Imparts reactive sites for crosslinking in silicone-based elastomers and resins, improving their mechanical properties.
• Fiber Treatment for Textiles & Nonwovens: Applied to glass or mineral fibers to improve their compatibility with resin binders, leading to stronger and more durable composite textiles.

Basic Information

Product Name	Diethyl n-[3-(Triethoxysilyl)Propyl]-L-Aspartate
CAS No.	94277-93-7
Molecular Formula	C18H37NO7Si
Molecular Weight	407.58 g/mol
Synonyms	L-Aspartic acid, N-[3-(triethoxysilyl)propyl]-, diethyl ester; Diethyl N-(3-triethoxysilylpropyl)-L-aspartate; N-[3-(Triethoxysilyl)propyl]-L-aspartic acid diethyl ester; 3-(Triethoxysilyl)propyl L-aspartate diethyl ester; Aspartic acid silane coupling agent; A-LEO; SCA-L-Asp; Silane coupling agent KH-LEO
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Quality is verified through analytical methods including HPLC, GC, NMR, and FTIR. Certificates of Analysis (COA) detailing purity, identity, and key specifications are available for every batch upon request. We adhere to a quality management system to support our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Specific Rotation [α]20/D	Contact for details
Refractive Index (n20/D)	1.430 - 1.450
Density (g/mL, 20°C)	1.00 - 1.10
Water Content (KF)	≤ 0.5%

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