Description

4-[Diethoxy(Methyl)Silyl]Butyric Acid Ethyl Ester is a specialized organosilicon compound that serves as a versatile coupling agent and monomer. Its bifunctional structure, featuring both hydrolyzable ethoxysilyl groups and an ester-terminated alkyl chain, makes it a critical intermediate for introducing silicon-based functionality into organic polymers and surfaces. This product is essential for manufacturers in the silicone, coatings, and advanced materials sectors seeking to enhance adhesion, modify surface properties, or create hybrid organic-inorganic networks.

Application

• Silicone Modification: Acts as a key monomer or crosslinker in the synthesis of specialty silicone resins, elastomers, and sealants, improving compatibility with organic matrices.
• Surface Primers & Adhesion Promoters: Used in formulations for coatings, inks, and adhesives to promote bonding between inorganic substrates (glass, metals, minerals) and organic polymers.
• Hybrid Material Synthesis: Serves as a precursor in sol-gel processes for creating advanced hybrid organic-inorganic coatings with tailored hardness, scratch resistance, and optical properties.
• Release Coatings & Molding Agents: Incorporated into formulations for non-stick and release coatings, particularly in composite molding and tire manufacturing.
• Fiber & Fabric Treatment: Imparts water repellency, softness, and durability to textiles and glass fibers.
• Pharmaceutical & Cosmetic Intermediates: Utilized in the synthesis of silicon-containing active ingredients or delivery agents, subject to appropriate purity grades.

Basic Information

Product Name	4-[Diethoxy(Methyl)Silyl]Butyric Acid Ethyl Ester
CAS No.	16068-01-2
Molecular Formula	C11H24O4Si
Molecular Weight	248.40 g/mol
Synonyms	Ethyl 4-(Diethoxymethylsilyl)butanoate; Butanoic acid, 4-(diethoxymethylsilyl)-, ethyl ester; (3-Carbethoxypropyl)methyldiethoxysilane; 4-(Diethoxymethylsilyl)butyric Acid Ethyl Ester; MDES; Methyldiethoxysilylbutyric Acid Ethyl Ester; γ-(Methyldiethoxysilyl)butyric Acid Ethyl Ester; SIB1832.0 (Gelest)
EINECS	240-199-6

Quality Control

Our production of 4-[Diethoxy(Methyl)Silyl]Butyric Acid Ethyl Ester adheres to stringent quality management protocols. Each batch undergoes comprehensive analysis using techniques including GC, NMR, and FTIR to confirm identity, purity, and consistency. Certificates of Analysis (COA) detailing assay, impurity profile, and physical properties are provided with every shipment to ensure traceability and compliance with your technical requirements.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis and degradation of the product.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.420 - 1.430
Density (20°C)	0.95 - 0.98 g/mL

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