Description

3-Methacryloxypropyltrimethoxysilane is a bifunctional organosilane coupling agent featuring both a hydrolysable methoxysilyl group and a polymerizable methacrylate group. This dual functionality is critical for creating strong, durable bonds between inorganic materials and organic polymer matrices. It is an essential raw material for manufacturers in the composites, coatings, adhesives, and sealants industries seeking to enhance material performance and longevity.

Application

• Glass Fiber Reinforced Plastics (GRP/FRP): A key coupling agent for unsaturated polyester, vinyl ester, and acrylic resins to dramatically improve the wet strength and durability of composites.
• Mineral-Filled Composites: Used to treat fillers like silica, talc, and clay to improve dispersion, reduce viscosity, and enhance mechanical properties in thermoset and thermoplastic compounds.
• Adhesives & Sealants: Improves adhesion to glass, metals, and mineral substrates in acrylic, silicone-modified, and other structural adhesive formulations.
• Coatings & Inks: Enhances the adhesion, scratch resistance, and weatherability of coatings on difficult substrates, including metals and treated surfaces.
• Crosslinking Agent: Acts as a co-monomer or crosslinker in silicone-modified acrylic polymers and moisture-curable systems.
• Surface Treatment: Used to prepare glass, metal, or mineral surfaces with a reactive methacrylate functional layer for subsequent bonding or polymerization.

Basic Information

Product Name	3-Methacryloxypropyltrimethoxysilane
CAS No.	2530-85-0
Molecular Formula	C10H20O5Si
Molecular Weight	248.35 g/mol
Synonyms	Methacryloxypropyltrimethoxysilane; MEMO; 3-(Trimethoxysilyl)propyl methacrylate; γ-Methacryloxypropyltrimethoxysilane; Silane A-174; KH-570; Dynasylan MEMO; Methacryloxypropyltrimethoxysilane; 3-Methacryloyloxypropyltrimethoxysilane
EINECS	219-785-8

Quality Control

Our production of 3-Methacryloxypropyltrimethoxysilane adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including GC, IR, and titration methods, to ensure consistent purity and performance. Certificates of Analysis (COA) documenting key specifications are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive); keep containers tightly sealed when not in use to prevent hydrolysis and polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.428 - 1.432
Density (20°C)	1.040 - 1.050 g/cm³
Color (APHA)	≤ 30

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