Description

Dimethylacetoxysilane is a versatile organosilicon compound primarily used as a key intermediate and functionalizing agent in advanced material synthesis. Its high reactivity, particularly as an acetoxy-functional silane, makes it valuable for introducing silicon-containing groups into organic matrices and for surface modification. This product is essential for manufacturers in the silicone polymer, pharmaceutical, and specialty chemical industries seeking to enhance material properties or create novel functional materials. Its controlled synthesis and consistent quality are critical for ensuring reproducible results in sensitive applications.

Application

• Silicone Crosslinking Agent: Used as a moisture-curable crosslinker in room-temperature vulcanizing (RTV) silicone sealants and adhesives.
• Surface Modification: Imparts hydrophobic or specific functional properties to inorganic surfaces like glass, silica, and metals.
• Pharmaceutical Intermediate: Serves as a protecting group or building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Polymer Functionalization: Introduces acetoxy-silyl groups into polymer chains to modify solubility, adhesion, or reactivity.
• Coupling Agent: Improves the interface and adhesion between organic polymers and inorganic fillers in composite materials.
• Chemical Synthesis: Acts as a reagent for the introduction of dimethylsilyl groups in organic synthesis.

Basic Information

Product Name	Dimethylacetoxysilane
CAS No.	18243-23-7
Molecular Formula	C6H14O3Si
Molecular Weight	162.26 g/mol
Synonyms	Acetoxydimethylsilane; Dimethylsilyl acetate; (Acetoxy)dimethylsilane; Dimethyl(acetoxy)silane; Acetic acid dimethylsilyl ester; DMAS; Dimethylacetoxy silane; Acetic acid (dimethylsilyl) ester
EINECS	Contact for details

Quality Control

Our Dimethylacetoxysilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or titration and impurity profiling, to meet stringent specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with customer requirements and relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). Due to its highly volatile and hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, open flames, and incompatible materials such as strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Density (at 20°C)	0.92 - 0.96 g/mL
Refractive Index (n20D)	1.390 - 1.400
Water Content (KF)	≤ 0.5 %

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