Description

(Isocyanatomethyl)Methyldimethoxysilane CAS NO 406679-89-8 is a highly reactive organosilicon compound featuring both isocyanate and alkoxysilane functional groups. This dual functionality makes it a critical coupling agent and building block for synthesizing advanced hybrid organic-inorganic materials. It is essential for manufacturers in the adhesives, sealants, coatings, and specialty polymer industries seeking to enhance material properties like adhesion, cross-linking density, and surface modification.

Application

• Silane Coupling Agent: Used to improve the adhesion between organic polymers and inorganic substrates like glass, metals, and minerals in composite materials.
• Surface Modification: Imparts specific surface properties such as hydrophobicity, reactivity, or compatibility to fillers (e.g., silica, glass fibers) and nanoparticles.
• Polymer Synthesis: Serves as a key monomer or cross-linker in the production of polyurethanes, polyureas, and other specialty polymers, introducing hydrolytically stable Si-O bonds.
• Adhesives & Sealants: Enhances moisture-curing properties, adhesion strength, and durability in high-performance formulations.
• Hybrid Coating Precursor: Used in sol-gel processes to create scratch-resistant, anti-corrosive, or functional coatings.
• Pharmaceutical & Agrochemistry Intermediates: Acts as a versatile synthetic intermediate for introducing silane functionality into bioactive molecules.

Basic Information

Item	Detail
Product Name	(Isocyanatomethyl)Methyldimethoxysilane
CAS No.	406679-89-8
Molecular Formula	C7H15NO3Si
Molecular Weight	189.29 g/mol
Synonyms	Methyldimethoxy(isocyanatomethyl)silane; (Isocyanatomethyl)methyldimethoxysilane; 3-Isocyanatopropylmethyldimethoxysilane (common naming variant); Isocyanatomethyl-methyl-dimethoxysilan; Silane, (isocyanatomethyl)methyldimethoxy-; MDMOS; Isocyanato silane coupling agent
EINECS	Contact for details

Quality Control

Our production of (Isocyanatomethyl)Methyldimethoxysilane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay (GC/HPLC), purity verification, and moisture content analysis, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) documenting all critical parameters is provided with each shipment to guarantee traceability and consistency.

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 moisture-sensitive (hygroscopic) nature, containers must be kept sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and polymerization. Keep away from heat, sparks, open flames, and incompatible materials such as water, alcohols, amines, and strong acids/bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Isocyanate Content (NCO)	Contact for details
Moisture (Karl Fischer)	≤ 0.1%
Density (20°C)	~1.05 g/cm³
Refractive Index (n20D)	~1.420

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