Description

(Isocyanatomethyl)Trimethoxysilane is a versatile organosilicon compound featuring both isocyanate and alkoxysilane functional groups. This dual functionality makes it a critical coupling agent and adhesion promoter in advanced material formulations. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in the production of specialty polymers and composites, seeking to enhance material performance and durability.

Application

• As a key adhesion promoter and coupling agent in polyurethane-based coatings, sealants, and adhesives.
• Surface modification of inorganic fillers (e.g., silica, glass) to improve dispersion and compatibility in polymer matrices.
• Crosslinking agent in moisture-curable resin systems for enhanced mechanical properties and chemical resistance.
• Intermediate in the synthesis of specialized silane-modified polymers (SMP) and hybrid organic-inorganic materials.
• Primer or additive to improve the adhesion of paints and coatings to difficult substrates like metals, glass, and plastics.
• Used in the manufacture of high-performance elastomers and composite materials for automotive and aerospace applications.

Basic Information

Product Name	(Isocyanatomethyl)Trimethoxysilane
CAS No.	78450-75-6
Molecular Formula	C5H11NO4Si
Molecular Weight	177.23 g/mol
Synonyms	3-Isocyanatopropyltrimethoxysilane (common misnomer for this structure), Trimethoxy[3-(isocyanato)propyl]silane, (3-Isocyanatopropyl)trimethoxysilane, Isocyanatopropyltrimethoxysilane, Silane, isocyanatomethyltrimethoxy-, Silane A-Link 35 (potential trade name), γ-Isocyanatopropyltrimethoxysilane, Adhesion promoter 78450-75-6
EINECS	Contact for details

Quality Control

Our (Isocyanatomethyl)Trimethoxysilane is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC or titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided to guarantee compliance with your technical requirements.

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/59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent degradation from moisture ingress.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.07 g/cm³
Refractive Index (n20D)	~1.420
Isocyanate Content (NCO)	~23.7%

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