Description

(3-Acetoxypropyl)Trichlorosilane is a bifunctional organosilicon compound that serves as a critical coupling agent and intermediate in advanced material synthesis. Its molecular structure combines hydrolyzable trichlorosilyl groups with an acetoxy-functionalized alkyl chain, enabling it to form durable bonds between inorganic substrates and organic polymers. This product is essential for manufacturers in the silicone, adhesive, and specialty coatings industries seeking to enhance material compatibility, surface adhesion, and composite performance.

Application

• Surface Modification Agent: Used to functionalize glass, silica, metals, and other inorganic surfaces to improve adhesion for coatings, inks, and adhesives.
• Silicone Intermediate: Acts as a key monomer or cross-linking agent in the synthesis of specialty silicone resins, elastomers, and sealants with tailored properties.
• Composite Material Coupling Agent: Enhances the interfacial bonding between mineral fillers (e.g., glass fibers, silica) and polymer matrices in reinforced plastics and composites.
• Hydrophobic Coating Precursor: Employed in the development of water-repellent and release coatings for textiles, paper, and construction materials.
• Chemical Grafting: Facilitates the covalent attachment of organic molecules, biomolecules, or polymers to silicon-based surfaces for sensor technology or biomedical devices.
• Adhesive Formulation: Incorporated into primer systems to promote adhesion of silicone-based adhesives and sealants to difficult-to-bond substrates.

Basic Information

Product Name	(3-Acetoxypropyl)Trichlorosilane
CAS No.	5290-25-5
Molecular Formula	C5H9Cl3O2Si
Molecular Weight	235.57 g/mol
Synonyms	3-(Acetoxy)propyltrichlorosilane; (3-Acetoxypropyl)silicon trichloride; γ-Acetoxypropyltrichlorosilane; Trichloro(3-acetoxypropyl)silane; 3-Acetoxypropyltrichlorosilane; Acetoxypropyltrichlorosilane; Silane, trichloro(3-acetoxypropyl)-; 5290-25-5
EINECS	226-124-8

Quality Control

Our (3-Acetoxypropyl)Trichlorosilane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC or titration and impurity profiling, to ensure it meets precise specifications for industrial and research applications. Certificates of Analysis (COA) documenting purity, identity, and key physical properties are available upon request 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and reacts vigorously with water, strong acids, and bases. Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and degradation. Isolate from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.25 - 1.30 g/cm³
Refractive Index (n20D)	1.440 - 1.450

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