Description

Acetoxymethyldimethylacetoxysilane is a versatile organosilicon compound, also known as (Acetoxymethyl)dimethylacetoxysilane, valued for its dual reactive acetoxy groups. This bifunctional silane is a crucial intermediate in the synthesis of specialized silicone polymers and serves as an effective coupling agent and surface modifier. It is primarily needed by manufacturers in the silicone elastomer, adhesive, sealant, and specialty coatings industries, where it enhances adhesion and cross-linking properties.

Application

• Cross-linking Agent: Used as a cross-linker in room-temperature vulcanizing (RTV) silicone sealants and adhesives.
• Coupling Agent: Improves adhesion between inorganic materials (like glass or minerals) and organic polymer matrices in composites.
• Surface Modification: Imparts hydrophobic or specific functional properties to surfaces of silica, metals, or other substrates.
• Polymer Synthesis: Serves as a key monomer or intermediate in the production of functionalized silicone resins and polymers.
• Moisture-Cure Systems: Functions in moisture-curing systems where its acetoxy groups hydrolyze to form silanols, leading to condensation and network formation.
• Adhesion Promoter: Enhances the bond strength in coatings and primers applied to difficult-to-adhere surfaces.

Basic Information

Product Name	Acetoxymethyldimethylacetoxysilane
CAS No.	5833-57-8
Molecular Formula	C7H14O4Si
Molecular Weight	190.27 g/mol
Synonyms	(Acetoxymethyl)dimethylacetoxysilane; Dimethylbis(acetoxy)methylsilane; Acetoxymethyl dimethylacetoxysilane; (Acetoxymethyl)dimethylsilyl acetate; Bis(acetoxy)methyldimethylsilane; Methylenebis(oxy)bis[dimethylsilylene] diacetate (alternative); DMDAAS (abbreviation)
EINECS	Contact for details

Quality Control

Our Acetoxymethyldimethylacetoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or titration and impurity profiling, to ensure it meets precise specifications for industrial applications. A Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with every shipment to guarantee consistency and reliability for your processes.

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 from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.05 g/cm³
Refractive Index (n20D)	~1.410 - 1.415

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