Description

Diacetoxydimethylsilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of silicone polymers and functional materials. Its bifunctional nature, featuring both hydrolyzable acetoxy groups and stable methyl groups, makes it valuable for introducing dimethylsiloxane units into various chemical structures. This product is essential for manufacturers in the silicone, pharmaceutical, and specialty chemical industries seeking to develop products with tailored surface properties, release characteristics, or as a precursor for further chemical modification.

Application

• Silicone Crosslinking Agent: Used as a crosslinker in moisture-curing room temperature vulcanizing (RTV) silicone sealants and adhesives.
• Surface Modification: Acts as a silylating agent to impart hydrophobic properties to inorganic surfaces like glass, silica, and metals.
• Chemical Synthesis Intermediate: Serves as a protected or functional precursor in the synthesis of more complex organosilicon molecules for pharmaceutical and agrochemical applications.
• Polymer Modification: Employed to introduce siloxane segments into organic polymer backbones to modify flexibility, thermal stability, and surface energy.
• Adhesion Promoter: Functions as a coupling agent in composite materials to improve the bond between organic resins and inorganic fillers.
• Water Repellent Formulations: A key ingredient in formulations for creating water-resistant coatings on textiles, leather, and construction materials.

Basic Information

Product Name	Diacetoxydimethylsilane
CAS No.	4774-73-6
Molecular Formula	C6H12O4Si
Molecular Weight	176.24 g/mol
Synonyms	Dimethyldiacetoxysilane; Acetic acid, dimethylsilylene ester; Dimethylbis(acetoxy)silane; Bis(acetoxy)dimethylsilane; Dimethyl diacetoxysilane; Diacetoxydimethylsilicon; Silane, diacetoxydimethyl-; Dimethylsilanediol diacetate
EINECS	225-320-8

Quality Control

Our Diacetoxydimethylsilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques to confirm identity, potency, and impurity profiles. Certificates of Analysis (COA) detailing specific results for purity, water content, and other critical parameters are provided with every shipment to support your quality assurance protocols.

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) and must be kept under a dry, inert atmosphere (e.g., nitrogen) to prevent premature hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.08 g/cm³
Refractive Index (n20D)	~1.405 - 1.415

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