Description

Methyldi(Ethoxy)(2-Phenylpropyl)Silane is a specialized organosilicon compound with the CAS registry number 70851-46-6. This silane coupling agent is valued for its ability to modify interfaces between organic polymers and inorganic materials, enhancing adhesion and composite performance. It is primarily sought by manufacturers in the advanced materials, coatings, and specialty chemical synthesis sectors for developing high-performance products.

Application

• As a silane coupling agent in fiberglass-reinforced plastics and mineral-filled composites.
• A key intermediate in the synthesis of specialty silicone polymers and functionalized siloxanes.
• Surface modification of inorganic fillers (e.g., silica, glass) to improve dispersion and bonding in polymer matrices.
• Adhesion promoter in sealants, adhesives, and coatings for demanding industrial applications.
• Used in the formulation of release coatings and mold-making materials.
• Potential monomer for hybrid organic-inorganic materials (ORMOSILs) used in optics and electronics.
• Research and development of novel catalysts and pharmaceutical intermediates.

Basic Information

Product Name	Methyldi(Ethoxy)(2-Phenylpropyl)Silane
CAS No.	70851-46-6
Molecular Formula	C₁₄H₂₄O₂Si
Molecular Weight	252.43 g/mol
Synonyms	Methylbis(ethoxy)(2-phenylpropyl)silane; (2-Phenylpropyl)methyldiethoxysilane; Diethoxy(methyl)(2-phenylpropyl)silane; Silane, diethoxy(2-phenylpropyl)methyl-; Methyl(2-phenylpropyl)diethoxysilane; MDES (2-Phenylpropyl); CAS 70851-46-6
EINECS	Contact for details

Quality Control

Our Methyldi(Ethoxy)(2-Phenylpropyl)Silane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) are provided with every shipment, detailing all relevant specifications. We are committed to meeting the quality standards required for industrial and R&D applications, with the capability to tailor specifications to your project needs.

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) for long-term storage to prevent hydrolysis and maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.480 - 1.490
Density (g/mL, 20°C)	0.950 - 0.980
Water Content (KF)	≤ 0.5%

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