Description

4-(Dichloromethylsilyl)Butyryl Chloride is a highly reactive bifunctional organosilicon compound that serves as a critical building block in advanced material synthesis. Its unique structure, featuring both an acid chloride and a dichlorosilyl group, enables it to act as a versatile linker for creating hybrid organic-inorganic polymers and functionalized surfaces. This compound is essential for R&D and production chemists in the silicone, pharmaceutical, and specialty polymer industries seeking to introduce specific functional groups or enhance material properties.

Application

• Silicone Polymer Modification: Key intermediate for introducing butyryl chloride functionalities into polysiloxane backbones, altering surface energy and reactivity.
• Surface Coupling Agent: Used to functionalize silica, glass, or metal oxide surfaces for improved adhesion in coatings and composite materials.
• Pharmaceutical Intermediates: Serves as a precursor in the synthesis of silicon-containing drug candidates and active pharmaceutical ingredients (APIs).
• Crosslinking Agent: Employed in the production of high-performance elastomers and resins where controlled crosslinking density is required.
• Hybrid Material Synthesis: Facilitates the creation of novel organic-inorganic hybrid (OIH) materials for specialized optical or electronic applications.
• Adhesive & Sealant Formulations: Imparts specific curing characteristics and enhances bond strength in advanced silicone-based adhesives.

Basic Information

Product Name	4-(Dichloromethylsilyl)Butyryl Chloride
CAS No.	4084-34-8
Molecular Formula	C5H9Cl3OSi
Molecular Weight	219.57 g/mol
Synonyms	4-(Dichlorosilylmethyl)butanoyl Chloride; Butanoyl Chloride, 4-[(dichloromethylsilyl)methyl]-; γ-(Dichloromethylsilyl)butyryl Chloride; (3-Carboxypropyl)methyldichlorosilane Chloride; 4-[(Dichloromethylsilyl)methyl]butyryl Chloride; 4-(Dichlorosilylmethyl)butyryl Chloride; Dichloro(4-chloroformylbutyl)methylsilane
EINECS	Contact for details

Quality Control

Our production of 4-(Dichloromethylsilyl)Butyryl Chloride adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for demanding synthetic applications. Each lot is characterized using advanced analytical techniques including GC, NMR, and FTIR to confirm identity and purity. Comprehensive Certificates of Analysis (COA) detailing all specification parameters are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and reacts vigorously with strong acids and organic solvents; it must be kept under an inert atmosphere (e.g., nitrogen or argon) and isolated from incompatible materials.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Density (at 20°C)	~1.25 g/mL
Refractive Index (n20D)	~1.460

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