Description

Methacryloxypropylmethyldichlorosilane is a highly reactive bifunctional organosilane coupling agent, crucial for creating durable chemical bridges between inorganic substrates and organic polymer matrices. Its core value lies in enhancing adhesion, mechanical strength, and environmental resistance in composite materials and coatings. This product is essential for manufacturers in the advanced materials, specialty adhesives, and electronics industries seeking to improve product performance and longevity.

Application

• Surface modification and priming agent for glass, silica, and metal oxides to improve polymer adhesion.
• Key monomer for synthesizing silicone-modified acrylic resins and hybrid organic-inorganic copolymers.
• Coupling agent in filled composites (e.g., fiberglass, mineral-filled plastics) to enhance interfacial bonding and dispersion.
• Intermediate in the production of moisture-curable adhesives, sealants, and protective coatings.
• Surface treatment for dental and biomedical composites to improve biocompatibility and bond strength.
• Precursor for functionalized silanes used in chromatography and as anchor groups for catalysts.
• Modifier for nanoparticles to prevent agglomeration and facilitate integration into polymer systems.

Basic Information

Product Name	Methacryloxypropylmethyldichlorosilane
CAS No.	18301-56-9
Molecular Formula	C8H14Cl2O2Si
Molecular Weight	241.19 g/mol
Synonyms	3-(Methacryloyloxy)propylmethyldichlorosilane; Methacryloxypropylmethyldichlorosilane; γ-Methacryloxypropylmethyldichlorosilane; MPMDCS; Dynasylan® MEMO; Silane A-174 (dichloro variant); 3-(Methacryloxy)propyldimethylchlorosilane (common misnomer); Dichloro(methyl)[3-[(2-methyl-1-oxo-2-propen-1-yl)oxy]propyl]silane
EINECS	242-189-1

Quality Control

Our Methacryloxypropylmethyldichlorosilane is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay, purity, and impurity profile analysis, to ensure consistent performance and reliability for your critical formulations. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to minimize volatility and hydrolysis. Due to its highly volatile and hygroscopic nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, acids, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 25°C)	1.08 - 1.10 g/mL
Refractive Index (n20/D)	1.450 - 1.455
Chloride Content	28.0 - 30.0 %

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