Description

(Methacryloxymethyl)Methyldimethoxysilane is a bifunctional organosilicon monomer featuring both methacrylate and hydrolyzable methoxysilyl groups. This unique structure makes it a critical coupling agent and adhesion promoter, enabling strong bonds between organic polymers and inorganic substrates. It is essential for manufacturers in the coatings, adhesives, and advanced composites industries seeking to enhance material durability and performance.

Application

• As a silane coupling agent in fiberglass-reinforced plastics and mineral-filled composites.
• As an adhesion promoter in acrylic-based paints, coatings, and inks for metals, glass, and plastics.
• For the surface modification of inorganic fillers (e.g., silica, glass beads) to improve dispersion and compatibility in polymer matrices.
• In the synthesis of moisture-curable acrylic resins and sealants with enhanced weatherability.
• As a key monomer in the production of specialty silicone-acrylic hybrid polymers.
• For crosslinking applications in UV-curable resin systems.
• In dental composite materials to improve filler-matrix bonding.

Basic Information

Product Name	(Methacryloxymethyl)Methyldimethoxysilane
CAS No.	121177-93-3
Molecular Formula	C9H18O4Si
Molecular Weight	218.32 g/mol
Synonyms	Methacryloxymethyl(methyl)dimethoxysilane; 3-(Methacryloyloxy)propylmethyldimethoxysilane (common mis-assignment check); Methacryloyloxymethylmethyldimethoxysilane; Methacryloxy Methyl Methyl Dimethoxy Silane; MEMDMS; Silane A-174 (related, but not identical); γ-Methacryloxypropylmethyldimethoxysilane (isomeric variant); Methacrylato Methyl Methyl Dimethoxy Silane
EINECS	Contact for details

Quality Control

Our (Methacryloxymethyl)Methyldimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided with every shipment to guarantee supply reliability and product traceability.

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 under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.430 - 1.435
Density (20°C)	1.00 - 1.05 g/cm³
Water Content (Karl Fischer)	≤ 0.1%

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