Description

Methyldiacetoxysilane is a versatile organosilicon compound that serves as a key intermediate and functionalizing agent. Its primary value lies in its ability to introduce methylsiloxane linkages and acetoxy functional groups, enabling surface modification and cross-linking in polymer systems. This chemical is essential for manufacturers in the silicone, adhesive, and specialty materials industries seeking to enhance product performance and durability.

Application

• Silicone Cross-linking Agent: Used as a moisture-curable cross-linker in room-temperature vulcanizing (RTV) silicone sealants and adhesives.
• Surface Treatment & Coupling Agent: Modifies inorganic surfaces like glass, silica, and metals to improve adhesion and compatibility with organic polymers.
• Intermediate for Silane Synthesis: Acts as a precursor for the synthesis of other functional methylsilanes and siloxanes.
• Water Repellent Formulations: Imparts hydrophobic properties to construction materials, textiles, and stone.
• Polymer Modification: Used to incorporate siloxane functionality into organic polymer backbones to alter physical properties.
• Electronics & Semiconductor Processing: Employed in thin film deposition and as a dielectric layer precursor.

Basic Information

Product Name	Methyldiacetoxysilane
CAS No.	3435-15-2
Molecular Formula	C5H10O4Si
Molecular Weight	162.22 g/mol
Synonyms	Methylbis(acetoxy)silane; Diacetoxymethylsilane; Methyl diacetoxysilane; Acetic acid, methylsilanediyl ester; Methylsilanediol diacetate; Silane, diacetoxymethyl-; Methylsilicon diacetate
EINECS	222-332-5

Quality Control

Our Methyldiacetoxysilane is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, FT-IR, and NMR to verify identity and composition. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment, ensuring it meets the stringent requirements of industrial and R&D applications.

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 and under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.10 - 1.15 g/mL
Refractive Index (n20D)	1.405 - 1.415
Acetic Acid Content	≤ 2.0%

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