Description

Methylphenyldiacetoxysilane is a versatile organosilicon compound characterized by its reactive acetoxy groups. This chemical is a crucial intermediate in the synthesis of silicone polymers and serves as a high-performance coupling agent and surface modifier. It is essential for manufacturers in the silicone resin, adhesive, and advanced materials sectors seeking to enhance product durability and interfacial properties.

Application

• Silicone Resin Crosslinking Agent: A key component for crosslinking and curing in the production of heat-resistant and weather-stable silicone resins.
• Surface Treatment & Coupling Agent: Improves adhesion between inorganic fillers (like glass, minerals) and organic polymer matrices in composites and sealants.
• Intermediate for Silane Modification: Serves as a precursor for synthesizing other functional phenylsilanes and specialty organosilicon compounds.
• Hydrophobic Coating Formulations: Used to impart water-repellent characteristics to surfaces in construction and protective coatings.
• Adhesive & Sealant Production: Enhances the bonding strength and environmental resistance of high-performance adhesives and sealants.
• Electronic Encapsulants: Employed in formulations for potting and encapsulating electronic components due to its stable phenyl group.

Basic Information

Product Name	Methylphenyldiacetoxysilane
CAS No.	17998-91-3
Molecular Formula	C11H14O4Si
Molecular Weight	238.31 g/mol
Synonyms	Methylphenyldiacetoxysilane; Diacetoxymethylphenylsilane; Methylphenyl diacetoxysilane; Acetic acid, (methylphenylsilylene) di-; Phenylmethyldiacetoxysilane; (Acetoxydimethylsilyl)benzene (related); Silane, diacetoxymethylphenyl-; Methylphenylbis(acetoxy)silane
EINECS	Contact for details

Quality Control

Our Methylphenyldiacetoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay and impurity profiling, to ensure it meets precise specifications for industrial and R&D applications. Certificates of Analysis (COA) documenting purity, identity, and key physical parameters are available upon request 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 product is hygroscopic (moisture-sensitive) and highly volatile; containers must be kept tightly sealed under dry conditions to prevent hydrolysis and minimize evaporation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.12 g/cm³
Refractive Index (n20D)	~1.460 - 1.470

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