Description

Diethyl [3-(Triethoxysilyl)Propyl]Malonate is a versatile organosilane coupling agent that combines a reactive triethoxysilyl group with a malonate ester functionality. This dual functionality makes it a critical intermediate for introducing silicon-based cross-linking and adhesion-promoting properties into polymer matrices. It is primarily used in the formulation of advanced silicone resins, adhesives, sealants, and surface modification agents. Industries such as specialty polymers, coatings, and electronics rely on this compound for its ability to enhance material compatibility and performance.

Application

• Silicone Resin & Polymer Modification: Acts as a key monomer or cross-linking agent in the synthesis of specialty silicone polymers, improving thermal stability and mechanical properties.
• Adhesive & Sealant Formulations: Enhances adhesion between organic polymers and inorganic substrates (e.g., glass, metals, minerals) in high-performance sealants and adhesives.
• Surface Treatment & Coupling Agent: Used to modify the surface of fillers (like silica) and pigments to improve their dispersion and compatibility within organic polymer systems.
• Hybrid Material Synthesis: Serves as a precursor in sol-gel processes for creating organic-inorganic hybrid coatings with tailored properties.
• Electronics & Encapsulation: Employed in the production of protective coatings and encapsulants for electronic components, offering moisture resistance and enhanced durability.
• Pharmaceutical & Agrochemical Intermediates: Utilized as a building block in the synthesis of more complex molecules for pharmaceutical and agrochemical applications.

Basic Information

Product Name	Diethyl [3-(Triethoxysilyl)Propyl]Malonate
CAS No.	22408-96-4
Molecular Formula	C15H32O7Si
Molecular Weight	352.50 g/mol
Synonyms	Diethyl (3-Triethoxysilylpropyl)malonate; 3-(Triethoxysilyl)propylmalonic Acid Diethyl Ester; Diethyl 3-(Triethoxysilyl)propylmalonate; (Triethoxysilylpropyl)malonic Acid Diethyl Ester; Diethyl (3-(Triethoxysilyl)propyl)propanedioate; Malonic Acid, (3-(Triethoxysilyl)propyl)-, Diethyl Ester; Propylmalonic Acid Diethyl Ester Triethoxysilane Derivative; Silane Coupling Agent KH-590 (related trade name series)
EINECS	Contact for details

Quality Control

Our Diethyl [3-(Triethoxysilyl)Propyl]Malonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided with every shipment. We are committed to meeting the specific requirements of our global customers across industrial and research sectors.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation by atmospheric moisture. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	1.00 - 1.05 g/mL

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