Description

(p-Methylphenethyl)Methyldimethoxysilane,95% CAS NO 722542-79-2 is a high-purity organosilicon compound, specifically a functional silane coupling agent. This product is engineered to provide a critical link between inorganic materials and organic polymers, enhancing adhesion, dispersion, and composite performance. It is essential for manufacturers in the advanced materials, specialty coatings, and polymer modification industries seeking to improve the mechanical properties and durability of their products.

Application

• As a coupling agent in mineral-filled composites (e.g., glass fiber, silica, clay) to improve interfacial adhesion and mechanical strength.
• As a surface modifier for nanoparticles and fillers to enhance dispersion in polymer matrices like epoxies, polyurethanes, and polyolefins.
• In the formulation of adhesives and sealants to promote bonding to difficult substrates, including metals and glass.
• As a key intermediate in the synthesis of more complex silicon-based specialty chemicals and pharmaceuticals.
• For the hydrophobic treatment of surfaces in construction materials and protective coatings.
• In rubber compounding to improve the reinforcement provided by silica fillers, reducing rolling resistance in tire applications.

Basic Information

Product Name	(p-Methylphenethyl)Methyldimethoxysilane, 95%
CAS No.	722542-79-2
Molecular Formula	C12H20O2Si
Molecular Weight	224.37 g/mol
Synonyms	[4-(2-Methyldimethoxysilylethyl)phenyl]methane; p-Methylphenethylmethyldimethoxysilane; (4-Methylphenethyl)methyldimethoxysilane; Methyldimethoxy(4-methylphenethyl)silane; Silane, methyldimethoxy[2-(4-methylphenyl)ethyl]-; MDMPS (abbreviation); Phenethylmethyldimethoxysilane derivative
EINECS	Contact for details

Quality Control

Our (p-Methylphenethyl)Methyldimethoxysilane is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure identity, purity, and consistency meet the specified 95% minimum assay. A comprehensive Certificate of Analysis (COA) detailing all test results is 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture ingress, which can lead to hydrolysis and degradation of the product. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Density (20°C)	~1.00 g/cm³
Refractive Index (n20D)	~1.485

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